feb06e83b2
Summary: Defined the abstract interface for a secondary cache in include/rocksdb/secondary_cache.h, and updated LRUCacheOptions to take a std::shared_ptr<SecondaryCache>. An item is initially inserted into the LRU (primary) cache. When it ages out and evicted from memory, its inserted into the secondary cache. On a LRU cache miss and successful lookup in the secondary cache, the item is promoted to the LRU cache. Only support synchronous lookup currently. The secondary cache would be used to implement a persistent (flash cache) or compressed cache. Tests: Results from cache_bench and db_bench don't show any regression due to these changes. cache_bench results before and after this change - Command ```./cache_bench -ops_per_thread=10000000 -threads=1``` Before ```Complete in 40.688 s; QPS = 245774``` ```Complete in 40.486 s; QPS = 246996``` ```Complete in 42.019 s; QPS = 237989``` After ```Complete in 40.672 s; QPS = 245869``` ```Complete in 44.622 s; QPS = 224107``` ```Complete in 42.445 s; QPS = 235599``` db_bench results before this change, and with this change + https://github.com/facebook/rocksdb/issues/8213 and https://github.com/facebook/rocksdb/issues/8191 - Commands ```./db_bench --benchmarks="fillseq,compact" -num=30000000 -key_size=32 -value_size=256 -use_direct_io_for_flush_and_compaction=true -db=/home/anand76/nvm_cache/db -partition_index_and_filters=true``` ```./db_bench -db=/home/anand76/nvm_cache/db -use_existing_db=true -benchmarks=readrandom -num=30000000 -key_size=32 -value_size=256 -use_direct_reads=true -cache_size=1073741824 -cache_numshardbits=6 -cache_index_and_filter_blocks=true -read_random_exp_range=17 -statistics -partition_index_and_filters=true -threads=16 -duration=300``` Before ``` DB path: [/home/anand76/nvm_cache/db] readrandom : 80.702 micros/op 198104 ops/sec; 54.4 MB/s (3708999 of 3708999 found) ``` ``` DB path: [/home/anand76/nvm_cache/db] readrandom : 87.124 micros/op 183625 ops/sec; 50.4 MB/s (3439999 of 3439999 found) ``` After ``` DB path: [/home/anand76/nvm_cache/db] readrandom : 77.653 micros/op 206025 ops/sec; 56.6 MB/s (3866999 of 3866999 found) ``` ``` DB path: [/home/anand76/nvm_cache/db] readrandom : 84.962 micros/op 188299 ops/sec; 51.7 MB/s (3535999 of 3535999 found) ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/8271 Reviewed By: zhichao-cao Differential Revision: D28357511 Pulled By: anand1976 fbshipit-source-id: d1cfa236f00e649a18c53328be10a8062a4b6da2
1061 lines
40 KiB
C++
1061 lines
40 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include <cstdlib>
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#include "cache/lru_cache.h"
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#include "db/db_test_util.h"
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#include "port/stack_trace.h"
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#include "util/compression.h"
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#include "util/random.h"
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namespace ROCKSDB_NAMESPACE {
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class DBBlockCacheTest : public DBTestBase {
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private:
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size_t miss_count_ = 0;
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size_t hit_count_ = 0;
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size_t insert_count_ = 0;
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size_t failure_count_ = 0;
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size_t compression_dict_miss_count_ = 0;
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size_t compression_dict_hit_count_ = 0;
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size_t compression_dict_insert_count_ = 0;
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size_t compressed_miss_count_ = 0;
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size_t compressed_hit_count_ = 0;
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size_t compressed_insert_count_ = 0;
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size_t compressed_failure_count_ = 0;
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public:
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const size_t kNumBlocks = 10;
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const size_t kValueSize = 100;
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DBBlockCacheTest()
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: DBTestBase("/db_block_cache_test", /*env_do_fsync=*/true) {}
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BlockBasedTableOptions GetTableOptions() {
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BlockBasedTableOptions table_options;
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// Set a small enough block size so that each key-value get its own block.
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table_options.block_size = 1;
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return table_options;
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}
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Options GetOptions(const BlockBasedTableOptions& table_options) {
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Options options = CurrentOptions();
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options.create_if_missing = true;
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options.avoid_flush_during_recovery = false;
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// options.compression = kNoCompression;
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options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
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options.table_factory.reset(NewBlockBasedTableFactory(table_options));
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return options;
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}
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void InitTable(const Options& /*options*/) {
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std::string value(kValueSize, 'a');
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for (size_t i = 0; i < kNumBlocks; i++) {
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ASSERT_OK(Put(ToString(i), value.c_str()));
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}
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}
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void RecordCacheCounters(const Options& options) {
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miss_count_ = TestGetTickerCount(options, BLOCK_CACHE_MISS);
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hit_count_ = TestGetTickerCount(options, BLOCK_CACHE_HIT);
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insert_count_ = TestGetTickerCount(options, BLOCK_CACHE_ADD);
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failure_count_ = TestGetTickerCount(options, BLOCK_CACHE_ADD_FAILURES);
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compressed_miss_count_ =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_MISS);
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compressed_hit_count_ =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_HIT);
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compressed_insert_count_ =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_ADD);
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compressed_failure_count_ =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_ADD_FAILURES);
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}
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void RecordCacheCountersForCompressionDict(const Options& options) {
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compression_dict_miss_count_ =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_MISS);
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compression_dict_hit_count_ =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_HIT);
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compression_dict_insert_count_ =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_ADD);
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}
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void CheckCacheCounters(const Options& options, size_t expected_misses,
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size_t expected_hits, size_t expected_inserts,
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size_t expected_failures) {
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size_t new_miss_count = TestGetTickerCount(options, BLOCK_CACHE_MISS);
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size_t new_hit_count = TestGetTickerCount(options, BLOCK_CACHE_HIT);
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size_t new_insert_count = TestGetTickerCount(options, BLOCK_CACHE_ADD);
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size_t new_failure_count =
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TestGetTickerCount(options, BLOCK_CACHE_ADD_FAILURES);
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ASSERT_EQ(miss_count_ + expected_misses, new_miss_count);
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ASSERT_EQ(hit_count_ + expected_hits, new_hit_count);
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ASSERT_EQ(insert_count_ + expected_inserts, new_insert_count);
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ASSERT_EQ(failure_count_ + expected_failures, new_failure_count);
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miss_count_ = new_miss_count;
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hit_count_ = new_hit_count;
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insert_count_ = new_insert_count;
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failure_count_ = new_failure_count;
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}
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void CheckCacheCountersForCompressionDict(
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const Options& options, size_t expected_compression_dict_misses,
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size_t expected_compression_dict_hits,
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size_t expected_compression_dict_inserts) {
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size_t new_compression_dict_miss_count =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_MISS);
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size_t new_compression_dict_hit_count =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_HIT);
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size_t new_compression_dict_insert_count =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_ADD);
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ASSERT_EQ(compression_dict_miss_count_ + expected_compression_dict_misses,
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new_compression_dict_miss_count);
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ASSERT_EQ(compression_dict_hit_count_ + expected_compression_dict_hits,
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new_compression_dict_hit_count);
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ASSERT_EQ(
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compression_dict_insert_count_ + expected_compression_dict_inserts,
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new_compression_dict_insert_count);
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compression_dict_miss_count_ = new_compression_dict_miss_count;
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compression_dict_hit_count_ = new_compression_dict_hit_count;
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compression_dict_insert_count_ = new_compression_dict_insert_count;
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}
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void CheckCompressedCacheCounters(const Options& options,
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size_t expected_misses,
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size_t expected_hits,
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size_t expected_inserts,
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size_t expected_failures) {
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size_t new_miss_count =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_MISS);
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size_t new_hit_count =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_HIT);
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size_t new_insert_count =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_ADD);
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size_t new_failure_count =
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TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_ADD_FAILURES);
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ASSERT_EQ(compressed_miss_count_ + expected_misses, new_miss_count);
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ASSERT_EQ(compressed_hit_count_ + expected_hits, new_hit_count);
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ASSERT_EQ(compressed_insert_count_ + expected_inserts, new_insert_count);
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ASSERT_EQ(compressed_failure_count_ + expected_failures, new_failure_count);
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compressed_miss_count_ = new_miss_count;
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compressed_hit_count_ = new_hit_count;
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compressed_insert_count_ = new_insert_count;
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compressed_failure_count_ = new_failure_count;
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}
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};
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TEST_F(DBBlockCacheTest, IteratorBlockCacheUsage) {
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ReadOptions read_options;
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read_options.fill_cache = false;
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auto table_options = GetTableOptions();
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auto options = GetOptions(table_options);
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InitTable(options);
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std::shared_ptr<Cache> cache = NewLRUCache(0, 0, false);
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table_options.block_cache = cache;
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options.table_factory.reset(NewBlockBasedTableFactory(table_options));
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Reopen(options);
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RecordCacheCounters(options);
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std::vector<std::unique_ptr<Iterator>> iterators(kNumBlocks - 1);
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Iterator* iter = nullptr;
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ASSERT_EQ(0, cache->GetUsage());
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(0));
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ASSERT_LT(0, cache->GetUsage());
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delete iter;
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iter = nullptr;
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ASSERT_EQ(0, cache->GetUsage());
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}
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TEST_F(DBBlockCacheTest, TestWithoutCompressedBlockCache) {
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ReadOptions read_options;
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auto table_options = GetTableOptions();
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auto options = GetOptions(table_options);
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InitTable(options);
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std::shared_ptr<Cache> cache = NewLRUCache(0, 0, false);
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table_options.block_cache = cache;
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options.table_factory.reset(NewBlockBasedTableFactory(table_options));
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Reopen(options);
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RecordCacheCounters(options);
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std::vector<std::unique_ptr<Iterator>> iterators(kNumBlocks - 1);
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Iterator* iter = nullptr;
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// Load blocks into cache.
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for (size_t i = 0; i + 1 < kNumBlocks; i++) {
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(i));
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ASSERT_OK(iter->status());
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CheckCacheCounters(options, 1, 0, 1, 0);
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iterators[i].reset(iter);
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}
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size_t usage = cache->GetUsage();
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ASSERT_LT(0, usage);
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cache->SetCapacity(usage);
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ASSERT_EQ(usage, cache->GetPinnedUsage());
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// Test with strict capacity limit.
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cache->SetStrictCapacityLimit(true);
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(kNumBlocks - 1));
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ASSERT_TRUE(iter->status().IsIncomplete());
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CheckCacheCounters(options, 1, 0, 0, 1);
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delete iter;
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iter = nullptr;
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// Release iterators and access cache again.
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for (size_t i = 0; i + 1 < kNumBlocks; i++) {
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iterators[i].reset();
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CheckCacheCounters(options, 0, 0, 0, 0);
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}
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ASSERT_EQ(0, cache->GetPinnedUsage());
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for (size_t i = 0; i + 1 < kNumBlocks; i++) {
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(i));
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ASSERT_OK(iter->status());
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CheckCacheCounters(options, 0, 1, 0, 0);
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iterators[i].reset(iter);
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}
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}
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#ifdef SNAPPY
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TEST_F(DBBlockCacheTest, TestWithCompressedBlockCache) {
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ReadOptions read_options;
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auto table_options = GetTableOptions();
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auto options = GetOptions(table_options);
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options.compression = CompressionType::kSnappyCompression;
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InitTable(options);
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std::shared_ptr<Cache> cache = NewLRUCache(0, 0, false);
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std::shared_ptr<Cache> compressed_cache = NewLRUCache(1 << 25, 0, false);
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table_options.block_cache = cache;
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table_options.block_cache_compressed = compressed_cache;
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options.table_factory.reset(NewBlockBasedTableFactory(table_options));
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Reopen(options);
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RecordCacheCounters(options);
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std::vector<std::unique_ptr<Iterator>> iterators(kNumBlocks - 1);
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Iterator* iter = nullptr;
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// Load blocks into cache.
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for (size_t i = 0; i + 1 < kNumBlocks; i++) {
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(i));
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ASSERT_OK(iter->status());
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CheckCacheCounters(options, 1, 0, 1, 0);
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CheckCompressedCacheCounters(options, 1, 0, 1, 0);
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iterators[i].reset(iter);
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}
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size_t usage = cache->GetUsage();
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ASSERT_LT(0, usage);
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ASSERT_EQ(usage, cache->GetPinnedUsage());
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size_t compressed_usage = compressed_cache->GetUsage();
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ASSERT_LT(0, compressed_usage);
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// Compressed block cache cannot be pinned.
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ASSERT_EQ(0, compressed_cache->GetPinnedUsage());
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// Set strict capacity limit flag. Now block will only load into compressed
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// block cache.
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cache->SetCapacity(usage);
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cache->SetStrictCapacityLimit(true);
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ASSERT_EQ(usage, cache->GetPinnedUsage());
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(kNumBlocks - 1));
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ASSERT_TRUE(iter->status().IsIncomplete());
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CheckCacheCounters(options, 1, 0, 0, 1);
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CheckCompressedCacheCounters(options, 1, 0, 1, 0);
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delete iter;
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iter = nullptr;
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// Clear strict capacity limit flag. This time we shall hit compressed block
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// cache.
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cache->SetStrictCapacityLimit(false);
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(kNumBlocks - 1));
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ASSERT_OK(iter->status());
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CheckCacheCounters(options, 1, 0, 1, 0);
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CheckCompressedCacheCounters(options, 0, 1, 0, 0);
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delete iter;
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iter = nullptr;
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}
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#endif // SNAPPY
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#ifndef ROCKSDB_LITE
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// Make sure that when options.block_cache is set, after a new table is
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// created its index/filter blocks are added to block cache.
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TEST_F(DBBlockCacheTest, IndexAndFilterBlocksOfNewTableAddedToCache) {
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Options options = CurrentOptions();
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options.create_if_missing = true;
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options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
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BlockBasedTableOptions table_options;
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table_options.cache_index_and_filter_blocks = true;
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table_options.filter_policy.reset(NewBloomFilterPolicy(20));
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options.table_factory.reset(NewBlockBasedTableFactory(table_options));
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CreateAndReopenWithCF({"pikachu"}, options);
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ASSERT_OK(Put(1, "key", "val"));
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// Create a new table.
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ASSERT_OK(Flush(1));
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// index/filter blocks added to block cache right after table creation.
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ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
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ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
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ASSERT_EQ(2, /* only index/filter were added */
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TestGetTickerCount(options, BLOCK_CACHE_ADD));
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ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_DATA_MISS));
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uint64_t int_num;
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ASSERT_TRUE(
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dbfull()->GetIntProperty("rocksdb.estimate-table-readers-mem", &int_num));
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ASSERT_EQ(int_num, 0U);
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// Make sure filter block is in cache.
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std::string value;
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ReadOptions ropt;
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db_->KeyMayExist(ReadOptions(), handles_[1], "key", &value);
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// Miss count should remain the same.
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ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
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ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
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db_->KeyMayExist(ReadOptions(), handles_[1], "key", &value);
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ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
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ASSERT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
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// Make sure index block is in cache.
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auto index_block_hit = TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT);
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value = Get(1, "key");
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ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
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ASSERT_EQ(index_block_hit + 1,
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TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
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value = Get(1, "key");
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ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
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ASSERT_EQ(index_block_hit + 2,
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TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
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}
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// With fill_cache = false, fills up the cache, then iterates over the entire
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// db, verify dummy entries inserted in `BlockBasedTable::NewDataBlockIterator`
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// does not cause heap-use-after-free errors in COMPILE_WITH_ASAN=1 runs
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TEST_F(DBBlockCacheTest, FillCacheAndIterateDB) {
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ReadOptions read_options;
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read_options.fill_cache = false;
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auto table_options = GetTableOptions();
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auto options = GetOptions(table_options);
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InitTable(options);
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std::shared_ptr<Cache> cache = NewLRUCache(10, 0, true);
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table_options.block_cache = cache;
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options.table_factory.reset(NewBlockBasedTableFactory(table_options));
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Reopen(options);
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ASSERT_OK(Put("key1", "val1"));
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ASSERT_OK(Put("key2", "val2"));
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ASSERT_OK(Flush());
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ASSERT_OK(Put("key3", "val3"));
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ASSERT_OK(Put("key4", "val4"));
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ASSERT_OK(Flush());
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ASSERT_OK(Put("key5", "val5"));
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ASSERT_OK(Put("key6", "val6"));
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ASSERT_OK(Flush());
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Iterator* iter = nullptr;
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iter = db_->NewIterator(read_options);
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iter->Seek(ToString(0));
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while (iter->Valid()) {
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iter->Next();
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}
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delete iter;
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iter = nullptr;
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}
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TEST_F(DBBlockCacheTest, IndexAndFilterBlocksStats) {
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Options options = CurrentOptions();
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options.create_if_missing = true;
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options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
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BlockBasedTableOptions table_options;
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table_options.cache_index_and_filter_blocks = true;
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LRUCacheOptions co;
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// 500 bytes are enough to hold the first two blocks
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co.capacity = 500;
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co.num_shard_bits = 0;
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co.strict_capacity_limit = false;
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co.metadata_charge_policy = kDontChargeCacheMetadata;
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std::shared_ptr<Cache> cache = NewLRUCache(co);
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table_options.block_cache = cache;
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table_options.filter_policy.reset(NewBloomFilterPolicy(20, true));
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options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
ASSERT_OK(Put(1, "longer_key", "val"));
|
|
// Create a new table
|
|
ASSERT_OK(Flush(1));
|
|
size_t index_bytes_insert =
|
|
TestGetTickerCount(options, BLOCK_CACHE_INDEX_BYTES_INSERT);
|
|
size_t filter_bytes_insert =
|
|
TestGetTickerCount(options, BLOCK_CACHE_FILTER_BYTES_INSERT);
|
|
ASSERT_GT(index_bytes_insert, 0);
|
|
ASSERT_GT(filter_bytes_insert, 0);
|
|
ASSERT_EQ(cache->GetUsage(), index_bytes_insert + filter_bytes_insert);
|
|
// set the cache capacity to the current usage
|
|
cache->SetCapacity(index_bytes_insert + filter_bytes_insert);
|
|
// The index and filter eviction statistics were broken by the refactoring
|
|
// that moved the readers out of the block cache. Disabling these until we can
|
|
// bring the stats back.
|
|
// ASSERT_EQ(TestGetTickerCount(options, BLOCK_CACHE_INDEX_BYTES_EVICT), 0);
|
|
// ASSERT_EQ(TestGetTickerCount(options, BLOCK_CACHE_FILTER_BYTES_EVICT), 0);
|
|
// Note that the second key needs to be no longer than the first one.
|
|
// Otherwise the second index block may not fit in cache.
|
|
ASSERT_OK(Put(1, "key", "val"));
|
|
// Create a new table
|
|
ASSERT_OK(Flush(1));
|
|
// cache evicted old index and block entries
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_INDEX_BYTES_INSERT),
|
|
index_bytes_insert);
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_FILTER_BYTES_INSERT),
|
|
filter_bytes_insert);
|
|
// The index and filter eviction statistics were broken by the refactoring
|
|
// that moved the readers out of the block cache. Disabling these until we can
|
|
// bring the stats back.
|
|
// ASSERT_EQ(TestGetTickerCount(options, BLOCK_CACHE_INDEX_BYTES_EVICT),
|
|
// index_bytes_insert);
|
|
// ASSERT_EQ(TestGetTickerCount(options, BLOCK_CACHE_FILTER_BYTES_EVICT),
|
|
// filter_bytes_insert);
|
|
}
|
|
|
|
namespace {
|
|
|
|
// A mock cache wraps LRUCache, and record how many entries have been
|
|
// inserted for each priority.
|
|
class MockCache : public LRUCache {
|
|
public:
|
|
static uint32_t high_pri_insert_count;
|
|
static uint32_t low_pri_insert_count;
|
|
|
|
MockCache()
|
|
: LRUCache((size_t)1 << 25 /*capacity*/, 0 /*num_shard_bits*/,
|
|
false /*strict_capacity_limit*/, 0.0 /*high_pri_pool_ratio*/) {
|
|
}
|
|
|
|
using ShardedCache::Insert;
|
|
Status Insert(const Slice& key, void* value, size_t charge,
|
|
void (*deleter)(const Slice& key, void* value), Handle** handle,
|
|
Priority priority) override {
|
|
if (priority == Priority::LOW) {
|
|
low_pri_insert_count++;
|
|
} else {
|
|
high_pri_insert_count++;
|
|
}
|
|
return LRUCache::Insert(key, value, charge, deleter, handle, priority);
|
|
}
|
|
};
|
|
|
|
uint32_t MockCache::high_pri_insert_count = 0;
|
|
uint32_t MockCache::low_pri_insert_count = 0;
|
|
|
|
} // anonymous namespace
|
|
|
|
TEST_F(DBBlockCacheTest, IndexAndFilterBlocksCachePriority) {
|
|
for (auto priority : {Cache::Priority::LOW, Cache::Priority::HIGH}) {
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
|
|
BlockBasedTableOptions table_options;
|
|
table_options.cache_index_and_filter_blocks = true;
|
|
table_options.block_cache.reset(new MockCache());
|
|
table_options.filter_policy.reset(NewBloomFilterPolicy(20));
|
|
table_options.cache_index_and_filter_blocks_with_high_priority =
|
|
priority == Cache::Priority::HIGH ? true : false;
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
DestroyAndReopen(options);
|
|
|
|
MockCache::high_pri_insert_count = 0;
|
|
MockCache::low_pri_insert_count = 0;
|
|
|
|
// Create a new table.
|
|
ASSERT_OK(Put("foo", "value"));
|
|
ASSERT_OK(Put("bar", "value"));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_EQ(1, NumTableFilesAtLevel(0));
|
|
|
|
// index/filter blocks added to block cache right after table creation.
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
|
|
ASSERT_EQ(2, /* only index/filter were added */
|
|
TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_DATA_MISS));
|
|
if (priority == Cache::Priority::LOW) {
|
|
ASSERT_EQ(0u, MockCache::high_pri_insert_count);
|
|
ASSERT_EQ(2u, MockCache::low_pri_insert_count);
|
|
} else {
|
|
ASSERT_EQ(2u, MockCache::high_pri_insert_count);
|
|
ASSERT_EQ(0u, MockCache::low_pri_insert_count);
|
|
}
|
|
|
|
// Access data block.
|
|
ASSERT_EQ("value", Get("foo"));
|
|
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
|
|
ASSERT_EQ(3, /*adding data block*/
|
|
TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_DATA_MISS));
|
|
|
|
// Data block should be inserted with low priority.
|
|
if (priority == Cache::Priority::LOW) {
|
|
ASSERT_EQ(0u, MockCache::high_pri_insert_count);
|
|
ASSERT_EQ(3u, MockCache::low_pri_insert_count);
|
|
} else {
|
|
ASSERT_EQ(2u, MockCache::high_pri_insert_count);
|
|
ASSERT_EQ(1u, MockCache::low_pri_insert_count);
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
|
|
// An LRUCache wrapper that can falsely report "not found" on Lookup.
|
|
// This allows us to manipulate BlockBasedTableReader into thinking
|
|
// another thread inserted the data in between Lookup and Insert,
|
|
// while mostly preserving the LRUCache interface/behavior.
|
|
class LookupLiarCache : public CacheWrapper {
|
|
int nth_lookup_not_found_ = 0;
|
|
|
|
public:
|
|
explicit LookupLiarCache(std::shared_ptr<Cache> target)
|
|
: CacheWrapper(std::move(target)) {}
|
|
|
|
using Cache::Lookup;
|
|
Handle* Lookup(const Slice& key, Statistics* stats) override {
|
|
if (nth_lookup_not_found_ == 1) {
|
|
nth_lookup_not_found_ = 0;
|
|
return nullptr;
|
|
}
|
|
if (nth_lookup_not_found_ > 1) {
|
|
--nth_lookup_not_found_;
|
|
}
|
|
return CacheWrapper::Lookup(key, stats);
|
|
}
|
|
|
|
// 1 == next lookup, 2 == after next, etc.
|
|
void SetNthLookupNotFound(int n) { nth_lookup_not_found_ = n; }
|
|
};
|
|
|
|
} // anonymous namespace
|
|
|
|
TEST_F(DBBlockCacheTest, AddRedundantStats) {
|
|
const size_t capacity = size_t{1} << 25;
|
|
const int num_shard_bits = 0; // 1 shard
|
|
int iterations_tested = 0;
|
|
for (std::shared_ptr<Cache> base_cache :
|
|
{NewLRUCache(capacity, num_shard_bits),
|
|
NewClockCache(capacity, num_shard_bits)}) {
|
|
if (!base_cache) {
|
|
// Skip clock cache when not supported
|
|
continue;
|
|
}
|
|
++iterations_tested;
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
|
|
|
|
std::shared_ptr<LookupLiarCache> cache =
|
|
std::make_shared<LookupLiarCache>(base_cache);
|
|
|
|
BlockBasedTableOptions table_options;
|
|
table_options.cache_index_and_filter_blocks = true;
|
|
table_options.block_cache = cache;
|
|
table_options.filter_policy.reset(NewBloomFilterPolicy(50));
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
DestroyAndReopen(options);
|
|
|
|
// Create a new table.
|
|
ASSERT_OK(Put("foo", "value"));
|
|
ASSERT_OK(Put("bar", "value"));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_EQ(1, NumTableFilesAtLevel(0));
|
|
|
|
// Normal access filter+index+data.
|
|
ASSERT_EQ("value", Get("foo"));
|
|
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD));
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD));
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD));
|
|
// --------
|
|
ASSERT_EQ(3, TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
|
|
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD_REDUNDANT));
|
|
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD_REDUNDANT));
|
|
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD_REDUNDANT));
|
|
// --------
|
|
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_ADD_REDUNDANT));
|
|
|
|
// Againt access filter+index+data, but force redundant load+insert on index
|
|
cache->SetNthLookupNotFound(2);
|
|
ASSERT_EQ("value", Get("bar"));
|
|
|
|
ASSERT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD));
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD));
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD));
|
|
// --------
|
|
ASSERT_EQ(4, TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD_REDUNDANT));
|
|
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD_REDUNDANT));
|
|
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD_REDUNDANT));
|
|
// --------
|
|
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_ADD_REDUNDANT));
|
|
|
|
// Access just filter (with high probability), and force redundant
|
|
// load+insert
|
|
cache->SetNthLookupNotFound(1);
|
|
ASSERT_EQ("NOT_FOUND", Get("this key was not added"));
|
|
|
|
EXPECT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD));
|
|
EXPECT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD));
|
|
EXPECT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD));
|
|
// --------
|
|
EXPECT_EQ(5, TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
|
|
EXPECT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD_REDUNDANT));
|
|
EXPECT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD_REDUNDANT));
|
|
EXPECT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD_REDUNDANT));
|
|
// --------
|
|
EXPECT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_ADD_REDUNDANT));
|
|
|
|
// Access just data, forcing redundant load+insert
|
|
ReadOptions read_options;
|
|
std::unique_ptr<Iterator> iter{db_->NewIterator(read_options)};
|
|
cache->SetNthLookupNotFound(1);
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key(), "bar");
|
|
|
|
EXPECT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD));
|
|
EXPECT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD));
|
|
EXPECT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD));
|
|
// --------
|
|
EXPECT_EQ(6, TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
|
|
EXPECT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_ADD_REDUNDANT));
|
|
EXPECT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_ADD_REDUNDANT));
|
|
EXPECT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_DATA_ADD_REDUNDANT));
|
|
// --------
|
|
EXPECT_EQ(3, TestGetTickerCount(options, BLOCK_CACHE_ADD_REDUNDANT));
|
|
}
|
|
EXPECT_GE(iterations_tested, 1);
|
|
}
|
|
|
|
TEST_F(DBBlockCacheTest, ParanoidFileChecks) {
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
|
|
options.level0_file_num_compaction_trigger = 2;
|
|
options.paranoid_file_checks = true;
|
|
BlockBasedTableOptions table_options;
|
|
table_options.cache_index_and_filter_blocks = false;
|
|
table_options.filter_policy.reset(NewBloomFilterPolicy(20));
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
ASSERT_OK(Put(1, "1_key", "val"));
|
|
ASSERT_OK(Put(1, "9_key", "val"));
|
|
// Create a new table.
|
|
ASSERT_OK(Flush(1));
|
|
ASSERT_EQ(1, /* read and cache data block */
|
|
TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
|
|
ASSERT_OK(Put(1, "1_key2", "val2"));
|
|
ASSERT_OK(Put(1, "9_key2", "val2"));
|
|
// Create a new SST file. This will further trigger a compaction
|
|
// and generate another file.
|
|
ASSERT_OK(Flush(1));
|
|
ASSERT_OK(dbfull()->TEST_WaitForCompact());
|
|
ASSERT_EQ(3, /* Totally 3 files created up to now */
|
|
TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
|
|
// After disabling options.paranoid_file_checks. NO further block
|
|
// is added after generating a new file.
|
|
ASSERT_OK(
|
|
dbfull()->SetOptions(handles_[1], {{"paranoid_file_checks", "false"}}));
|
|
|
|
ASSERT_OK(Put(1, "1_key3", "val3"));
|
|
ASSERT_OK(Put(1, "9_key3", "val3"));
|
|
ASSERT_OK(Flush(1));
|
|
ASSERT_OK(Put(1, "1_key4", "val4"));
|
|
ASSERT_OK(Put(1, "9_key4", "val4"));
|
|
ASSERT_OK(Flush(1));
|
|
ASSERT_OK(dbfull()->TEST_WaitForCompact());
|
|
ASSERT_EQ(3, /* Totally 3 files created up to now */
|
|
TestGetTickerCount(options, BLOCK_CACHE_ADD));
|
|
}
|
|
|
|
TEST_F(DBBlockCacheTest, CompressedCache) {
|
|
if (!Snappy_Supported()) {
|
|
return;
|
|
}
|
|
int num_iter = 80;
|
|
|
|
// Run this test three iterations.
|
|
// Iteration 1: only a uncompressed block cache
|
|
// Iteration 2: only a compressed block cache
|
|
// Iteration 3: both block cache and compressed cache
|
|
// Iteration 4: both block cache and compressed cache, but DB is not
|
|
// compressed
|
|
for (int iter = 0; iter < 4; iter++) {
|
|
Options options = CurrentOptions();
|
|
options.write_buffer_size = 64 * 1024; // small write buffer
|
|
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
|
|
|
|
BlockBasedTableOptions table_options;
|
|
switch (iter) {
|
|
case 0:
|
|
// only uncompressed block cache
|
|
table_options.block_cache = NewLRUCache(8 * 1024);
|
|
table_options.block_cache_compressed = nullptr;
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
break;
|
|
case 1:
|
|
// no block cache, only compressed cache
|
|
table_options.no_block_cache = true;
|
|
table_options.block_cache = nullptr;
|
|
table_options.block_cache_compressed = NewLRUCache(8 * 1024);
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
break;
|
|
case 2:
|
|
// both compressed and uncompressed block cache
|
|
table_options.block_cache = NewLRUCache(1024);
|
|
table_options.block_cache_compressed = NewLRUCache(8 * 1024);
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
break;
|
|
case 3:
|
|
// both block cache and compressed cache, but DB is not compressed
|
|
// also, make block cache sizes bigger, to trigger block cache hits
|
|
table_options.block_cache = NewLRUCache(1024 * 1024);
|
|
table_options.block_cache_compressed = NewLRUCache(8 * 1024 * 1024);
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
options.compression = kNoCompression;
|
|
break;
|
|
default:
|
|
FAIL();
|
|
}
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
// default column family doesn't have block cache
|
|
Options no_block_cache_opts;
|
|
no_block_cache_opts.statistics = options.statistics;
|
|
no_block_cache_opts = CurrentOptions(no_block_cache_opts);
|
|
BlockBasedTableOptions table_options_no_bc;
|
|
table_options_no_bc.no_block_cache = true;
|
|
no_block_cache_opts.table_factory.reset(
|
|
NewBlockBasedTableFactory(table_options_no_bc));
|
|
ReopenWithColumnFamilies(
|
|
{"default", "pikachu"},
|
|
std::vector<Options>({no_block_cache_opts, options}));
|
|
|
|
Random rnd(301);
|
|
|
|
// Write 8MB (80 values, each 100K)
|
|
ASSERT_EQ(NumTableFilesAtLevel(0, 1), 0);
|
|
std::vector<std::string> values;
|
|
std::string str;
|
|
for (int i = 0; i < num_iter; i++) {
|
|
if (i % 4 == 0) { // high compression ratio
|
|
str = rnd.RandomString(1000);
|
|
}
|
|
values.push_back(str);
|
|
ASSERT_OK(Put(1, Key(i), values[i]));
|
|
}
|
|
|
|
// flush all data from memtable so that reads are from block cache
|
|
ASSERT_OK(Flush(1));
|
|
|
|
for (int i = 0; i < num_iter; i++) {
|
|
ASSERT_EQ(Get(1, Key(i)), values[i]);
|
|
}
|
|
|
|
// check that we triggered the appropriate code paths in the cache
|
|
switch (iter) {
|
|
case 0:
|
|
// only uncompressed block cache
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_MISS), 0);
|
|
ASSERT_EQ(TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_MISS), 0);
|
|
break;
|
|
case 1:
|
|
// no block cache, only compressed cache
|
|
ASSERT_EQ(TestGetTickerCount(options, BLOCK_CACHE_MISS), 0);
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_MISS), 0);
|
|
break;
|
|
case 2:
|
|
// both compressed and uncompressed block cache
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_MISS), 0);
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_MISS), 0);
|
|
break;
|
|
case 3:
|
|
// both compressed and uncompressed block cache
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_MISS), 0);
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_HIT), 0);
|
|
ASSERT_GT(TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_MISS), 0);
|
|
// compressed doesn't have any hits since blocks are not compressed on
|
|
// storage
|
|
ASSERT_EQ(TestGetTickerCount(options, BLOCK_CACHE_COMPRESSED_HIT), 0);
|
|
break;
|
|
default:
|
|
FAIL();
|
|
}
|
|
|
|
options.create_if_missing = true;
|
|
DestroyAndReopen(options);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBBlockCacheTest, CacheCompressionDict) {
|
|
const int kNumFiles = 4;
|
|
const int kNumEntriesPerFile = 128;
|
|
const int kNumBytesPerEntry = 1024;
|
|
|
|
// Try all the available libraries that support dictionary compression
|
|
std::vector<CompressionType> compression_types;
|
|
if (Zlib_Supported()) {
|
|
compression_types.push_back(kZlibCompression);
|
|
}
|
|
if (LZ4_Supported()) {
|
|
compression_types.push_back(kLZ4Compression);
|
|
compression_types.push_back(kLZ4HCCompression);
|
|
}
|
|
if (ZSTD_Supported()) {
|
|
compression_types.push_back(kZSTD);
|
|
} else if (ZSTDNotFinal_Supported()) {
|
|
compression_types.push_back(kZSTDNotFinalCompression);
|
|
}
|
|
Random rnd(301);
|
|
for (auto compression_type : compression_types) {
|
|
Options options = CurrentOptions();
|
|
options.bottommost_compression = compression_type;
|
|
options.bottommost_compression_opts.max_dict_bytes = 4096;
|
|
options.bottommost_compression_opts.enabled = true;
|
|
options.create_if_missing = true;
|
|
options.num_levels = 2;
|
|
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
|
|
options.target_file_size_base = kNumEntriesPerFile * kNumBytesPerEntry;
|
|
BlockBasedTableOptions table_options;
|
|
table_options.cache_index_and_filter_blocks = true;
|
|
table_options.block_cache.reset(new MockCache());
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
DestroyAndReopen(options);
|
|
|
|
RecordCacheCountersForCompressionDict(options);
|
|
|
|
for (int i = 0; i < kNumFiles; ++i) {
|
|
ASSERT_EQ(i, NumTableFilesAtLevel(0, 0));
|
|
for (int j = 0; j < kNumEntriesPerFile; ++j) {
|
|
std::string value = rnd.RandomString(kNumBytesPerEntry);
|
|
ASSERT_OK(Put(Key(j * kNumFiles + i), value.c_str()));
|
|
}
|
|
ASSERT_OK(Flush());
|
|
}
|
|
ASSERT_OK(dbfull()->TEST_WaitForCompact());
|
|
ASSERT_EQ(0, NumTableFilesAtLevel(0));
|
|
ASSERT_EQ(kNumFiles, NumTableFilesAtLevel(1));
|
|
|
|
// Compression dictionary blocks are preloaded.
|
|
CheckCacheCountersForCompressionDict(
|
|
options, kNumFiles /* expected_compression_dict_misses */,
|
|
0 /* expected_compression_dict_hits */,
|
|
kNumFiles /* expected_compression_dict_inserts */);
|
|
|
|
// Seek to a key in a file. It should cause the SST's dictionary meta-block
|
|
// to be read.
|
|
RecordCacheCounters(options);
|
|
RecordCacheCountersForCompressionDict(options);
|
|
ReadOptions read_options;
|
|
ASSERT_NE("NOT_FOUND", Get(Key(kNumFiles * kNumEntriesPerFile - 1)));
|
|
// Two block hits: index and dictionary since they are prefetched
|
|
// One block missed/added: data block
|
|
CheckCacheCounters(options, 1 /* expected_misses */, 2 /* expected_hits */,
|
|
1 /* expected_inserts */, 0 /* expected_failures */);
|
|
CheckCacheCountersForCompressionDict(
|
|
options, 0 /* expected_compression_dict_misses */,
|
|
1 /* expected_compression_dict_hits */,
|
|
0 /* expected_compression_dict_inserts */);
|
|
}
|
|
}
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
class DBBlockCachePinningTest
|
|
: public DBTestBase,
|
|
public testing::WithParamInterface<
|
|
std::tuple<bool, PinningTier, PinningTier, PinningTier>> {
|
|
public:
|
|
DBBlockCachePinningTest()
|
|
: DBTestBase("/db_block_cache_test", /*env_do_fsync=*/false) {}
|
|
|
|
void SetUp() override {
|
|
partition_index_and_filters_ = std::get<0>(GetParam());
|
|
top_level_index_pinning_ = std::get<1>(GetParam());
|
|
partition_pinning_ = std::get<2>(GetParam());
|
|
unpartitioned_pinning_ = std::get<3>(GetParam());
|
|
}
|
|
|
|
bool partition_index_and_filters_;
|
|
PinningTier top_level_index_pinning_;
|
|
PinningTier partition_pinning_;
|
|
PinningTier unpartitioned_pinning_;
|
|
};
|
|
|
|
TEST_P(DBBlockCachePinningTest, TwoLevelDB) {
|
|
// Creates one file in L0 and one file in L1. Both files have enough data that
|
|
// their index and filter blocks are partitioned. The L1 file will also have
|
|
// a compression dictionary (those are trained only during compaction), which
|
|
// must be unpartitioned.
|
|
const int kKeySize = 32;
|
|
const int kBlockSize = 128;
|
|
const int kNumBlocksPerFile = 128;
|
|
const int kNumKeysPerFile = kBlockSize * kNumBlocksPerFile / kKeySize;
|
|
|
|
Options options = CurrentOptions();
|
|
// `kNoCompression` makes the unit test more portable. But it relies on the
|
|
// current behavior of persisting/accessing dictionary even when there's no
|
|
// (de)compression happening, which seems fairly likely to change over time.
|
|
options.compression = kNoCompression;
|
|
options.compression_opts.max_dict_bytes = 4 << 10;
|
|
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
|
|
BlockBasedTableOptions table_options;
|
|
table_options.block_cache = NewLRUCache(1 << 20 /* capacity */);
|
|
table_options.block_size = kBlockSize;
|
|
table_options.metadata_block_size = kBlockSize;
|
|
table_options.cache_index_and_filter_blocks = true;
|
|
table_options.metadata_cache_options.top_level_index_pinning =
|
|
top_level_index_pinning_;
|
|
table_options.metadata_cache_options.partition_pinning = partition_pinning_;
|
|
table_options.metadata_cache_options.unpartitioned_pinning =
|
|
unpartitioned_pinning_;
|
|
table_options.filter_policy.reset(
|
|
NewBloomFilterPolicy(10 /* bits_per_key */));
|
|
if (partition_index_and_filters_) {
|
|
table_options.index_type =
|
|
BlockBasedTableOptions::IndexType::kTwoLevelIndexSearch;
|
|
table_options.partition_filters = true;
|
|
}
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
Reopen(options);
|
|
|
|
Random rnd(301);
|
|
for (int i = 0; i < 2; ++i) {
|
|
for (int j = 0; j < kNumKeysPerFile; ++j) {
|
|
ASSERT_OK(Put(Key(i * kNumKeysPerFile + j), rnd.RandomString(kKeySize)));
|
|
}
|
|
ASSERT_OK(Flush());
|
|
if (i == 0) {
|
|
// Prevent trivial move so file will be rewritten with dictionary and
|
|
// reopened with L1's pinning settings.
|
|
CompactRangeOptions cro;
|
|
cro.bottommost_level_compaction = BottommostLevelCompaction::kForce;
|
|
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
|
|
}
|
|
}
|
|
|
|
// Clear all unpinned blocks so unpinned blocks will show up as cache misses
|
|
// when reading a key from a file.
|
|
table_options.block_cache->EraseUnRefEntries();
|
|
|
|
// Get base cache values
|
|
uint64_t filter_misses = TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS);
|
|
uint64_t index_misses = TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS);
|
|
uint64_t compression_dict_misses =
|
|
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_MISS);
|
|
|
|
// Read a key from the L0 file
|
|
Get(Key(kNumKeysPerFile));
|
|
uint64_t expected_filter_misses = filter_misses;
|
|
uint64_t expected_index_misses = index_misses;
|
|
uint64_t expected_compression_dict_misses = compression_dict_misses;
|
|
if (partition_index_and_filters_) {
|
|
if (top_level_index_pinning_ == PinningTier::kNone) {
|
|
++expected_filter_misses;
|
|
++expected_index_misses;
|
|
}
|
|
if (partition_pinning_ == PinningTier::kNone) {
|
|
++expected_filter_misses;
|
|
++expected_index_misses;
|
|
}
|
|
} else {
|
|
if (unpartitioned_pinning_ == PinningTier::kNone) {
|
|
++expected_filter_misses;
|
|
++expected_index_misses;
|
|
}
|
|
}
|
|
if (unpartitioned_pinning_ == PinningTier::kNone) {
|
|
++expected_compression_dict_misses;
|
|
}
|
|
ASSERT_EQ(expected_filter_misses,
|
|
TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
|
|
ASSERT_EQ(expected_index_misses,
|
|
TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
|
|
ASSERT_EQ(expected_compression_dict_misses,
|
|
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_MISS));
|
|
|
|
// Clear all unpinned blocks so unpinned blocks will show up as cache misses
|
|
// when reading a key from a file.
|
|
table_options.block_cache->EraseUnRefEntries();
|
|
|
|
// Read a key from the L1 file
|
|
Get(Key(0));
|
|
if (partition_index_and_filters_) {
|
|
if (top_level_index_pinning_ == PinningTier::kNone ||
|
|
top_level_index_pinning_ == PinningTier::kFlushedAndSimilar) {
|
|
++expected_filter_misses;
|
|
++expected_index_misses;
|
|
}
|
|
if (partition_pinning_ == PinningTier::kNone ||
|
|
partition_pinning_ == PinningTier::kFlushedAndSimilar) {
|
|
++expected_filter_misses;
|
|
++expected_index_misses;
|
|
}
|
|
} else {
|
|
if (unpartitioned_pinning_ == PinningTier::kNone ||
|
|
unpartitioned_pinning_ == PinningTier::kFlushedAndSimilar) {
|
|
++expected_filter_misses;
|
|
++expected_index_misses;
|
|
}
|
|
}
|
|
if (unpartitioned_pinning_ == PinningTier::kNone ||
|
|
unpartitioned_pinning_ == PinningTier::kFlushedAndSimilar) {
|
|
++expected_compression_dict_misses;
|
|
}
|
|
ASSERT_EQ(expected_filter_misses,
|
|
TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
|
|
ASSERT_EQ(expected_index_misses,
|
|
TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
|
|
ASSERT_EQ(expected_compression_dict_misses,
|
|
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_MISS));
|
|
}
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
DBBlockCachePinningTest, DBBlockCachePinningTest,
|
|
::testing::Combine(
|
|
::testing::Bool(),
|
|
::testing::Values(PinningTier::kNone, PinningTier::kFlushedAndSimilar,
|
|
PinningTier::kAll),
|
|
::testing::Values(PinningTier::kNone, PinningTier::kFlushedAndSimilar,
|
|
PinningTier::kAll),
|
|
::testing::Values(PinningTier::kNone, PinningTier::kFlushedAndSimilar,
|
|
PinningTier::kAll)));
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
int main(int argc, char** argv) {
|
|
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|