[tools] Add a tool to stress test concurrent writing to levelDB
Summary: Created a tool that runs multiple threads that concurrently read and write to levelDB. All writes to the DB are stored in an in-memory hashtable and verified at the end of the test. All writes for a given key are serialzied. Test Plan: - Verified by writing only a few keys and logging all writes and verifying that values read and written are correct. - Verified correctness of value generator. - Ran with various parameters of number of keys, locks, and threads. Reviewers: dhruba, MarkCallaghan, heyongqiang Reviewed By: dhruba Differential Revision: https://reviews.facebook.net/D5829
This commit is contained in:
Asad K Awan
parent
696b290821
commit
24f7983b1f
4
Makefile
4
Makefile
@ -57,6 +57,7 @@ TESTS = \
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TOOLS = \
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manifest_dump \
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sst_dump \
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db_stress \
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ldb
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PROGRAMS = db_bench $(TESTS) $(TOOLS)
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@ -112,6 +113,9 @@ $(LIBRARY): $(LIBOBJECTS)
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db_bench: db/db_bench.o $(LIBOBJECTS) $(TESTUTIL)
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$(CXX) db/db_bench.o $(LIBOBJECTS) $(TESTUTIL) $(EXEC_LDFLAGS) -o $@ $(LDFLAGS)
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db_stress: tools/db_stress.o $(LIBOBJECTS) $(TESTUTIL)
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$(CXX) tools/db_stress.o $(LIBOBJECTS) $(TESTUTIL) $(EXEC_LDFLAGS) -o $@ $(LDFLAGS)
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db_bench_sqlite3: doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL)
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$(CXX) doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LDFLAGS) -lsqlite3
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805
tools/db_stress.cc
Normal file
805
tools/db_stress.cc
Normal file
@ -0,0 +1,805 @@
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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 <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "db/db_impl.h"
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#include "db/version_set.h"
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#include "db/db_statistics.h"
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#include "leveldb/cache.h"
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#include "leveldb/db.h"
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#include "leveldb/env.h"
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#include "leveldb/write_batch.h"
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#include "leveldb/statistics.h"
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#include "port/port.h"
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#include "util/crc32c.h"
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#include "util/histogram.h"
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#include "util/mutexlock.h"
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#include "util/random.h"
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#include "util/testutil.h"
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#include "hdfs/env_hdfs.h"
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static const long KB = 1024;
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// Seed for PRNG
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static uint32_t FLAGS_seed = 2341234;
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// Max number of key/values to place in database
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static long FLAGS_max_key = 2 * KB * KB * KB;
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// Number of concurrent threads to run.
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static int FLAGS_threads = 32;
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// Size of each value will be this number times rand_int(1,3) bytes
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static int FLAGS_value_size_mult = 8;
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static bool FLAGS_verify_before_write = false;
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// Print histogram of operation timings
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static bool FLAGS_histogram = false;
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static bool FLAGS_verbose = false;
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// Number of bytes to buffer in memtable before compacting
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// (initialized to default value by "main")
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static int FLAGS_write_buffer_size = 0;
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// Number of bytes to use as a cache of uncompressed data.
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static long FLAGS_cache_size = 2 * KB * KB * KB;
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// Number of bytes in a block.
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static int FLAGS_block_size = 4 * KB;
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// Maximum number of files to keep open at the same time (use default if == 0)
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static int FLAGS_open_files = 0;
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// Bloom filter bits per key.
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// Negative means use default settings.
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static int FLAGS_bloom_bits = 10;
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// Use the db with the following name.
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static const char* FLAGS_db = NULL;
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// Verify checksum for every block read from storage
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static bool FLAGS_verify_checksum = false;
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// Database statistics
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static class leveldb::DBStatistics* dbstats;
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// Sync all writes to disk
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static bool FLAGS_sync = false;
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// If true, do not wait until data is synced to disk.
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static bool FLAGS_disable_data_sync = false;
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// If true, issue fsync instead of fdatasync
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static bool FLAGS_use_fsync = false;
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// If true, do not write WAL for write.
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static bool FLAGS_disable_wal = false;
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// Target level-0 file size for compaction
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static int FLAGS_target_file_size_base = 64 * KB;
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// A multiplier to compute targe level-N file size
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static int FLAGS_target_file_size_multiplier = 1;
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// Max bytes for level-0
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static int FLAGS_max_bytes_for_level_base = 256 * KB;
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// A multiplier to compute max bytes for level-N
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static int FLAGS_max_bytes_for_level_multiplier = 2;
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// Number of files in level-0 that will trigger put stop.
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static int FLAGS_level0_stop_writes_trigger = 12;
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// Number of files in level-0 that will slow down writes.
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static int FLAGS_level0_slowdown_writes_trigger = 8;
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// Ratio of reads to writes (expressed as a percentage)
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static int FLAGS_readwritepercent = 10;
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// Option to disable compation triggered by read.
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static int FLAGS_disable_seek_compaction = false;
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// Algorithm to use to compress the database
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static enum leveldb::CompressionType FLAGS_compression_type =
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leveldb::kSnappyCompression;
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// posix or hdfs environment
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static leveldb::Env* FLAGS_env = leveldb::Env::Default();
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// Number of operations per thread.
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static uint32_t FLAGS_ops_per_thread = 600000;
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// Log2 of number of keys per lock
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static uint32_t FLAGS_log2_keys_per_lock = 2; // implies 2^2 keys per lock
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extern bool useOsBuffer;
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extern bool useFsReadAhead;
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extern bool useMmapRead;
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namespace leveldb {
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class StressTest;
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namespace {
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class Stats {
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private:
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double start_;
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double finish_;
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double seconds_;
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long done_;
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long writes_;
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int next_report_;
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size_t bytes_;
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double last_op_finish_;
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Histogram hist_;
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public:
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Stats() { }
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void Start() {
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next_report_ = 100;
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hist_.Clear();
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done_ = 0;
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writes_ = 0;
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bytes_ = 0;
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seconds_ = 0;
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start_ = FLAGS_env->NowMicros();
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last_op_finish_ = start_;
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finish_ = start_;
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}
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void Merge(const Stats& other) {
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hist_.Merge(other.hist_);
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done_ += other.done_;
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writes_ += other.writes_;
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bytes_ += other.bytes_;
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seconds_ += other.seconds_;
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if (other.start_ < start_) start_ = other.start_;
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if (other.finish_ > finish_) finish_ = other.finish_;
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}
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void Stop() {
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finish_ = FLAGS_env->NowMicros();
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seconds_ = (finish_ - start_) * 1e-6;
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}
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void FinishedSingleOp() {
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if (FLAGS_histogram) {
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double now = FLAGS_env->NowMicros();
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double micros = now - last_op_finish_;
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hist_.Add(micros);
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if (micros > 20000) {
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fprintf(stderr, "long op: %.1f micros%30s\r", micros, "");
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fflush(stderr);
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}
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last_op_finish_ = now;
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}
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done_++;
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if (done_ >= next_report_) {
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if (next_report_ < 1000) next_report_ += 100;
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else if (next_report_ < 5000) next_report_ += 500;
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else if (next_report_ < 10000) next_report_ += 1000;
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else if (next_report_ < 50000) next_report_ += 5000;
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else if (next_report_ < 100000) next_report_ += 10000;
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else if (next_report_ < 500000) next_report_ += 50000;
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else next_report_ += 100000;
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fprintf(stderr, "... finished %ld ops%30s\r", done_, "");
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fflush(stderr);
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}
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}
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void AddBytesForOneWrite(size_t n) {
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writes_ ++;
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bytes_ += n;
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}
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void Report(const char* name) {
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std::string extra;
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if (bytes_ < 1 || done_ < 1) {
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fprintf(stderr, "No writes or ops?\n");
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return;
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}
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double elapsed = (finish_ - start_) * 1e-6;
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double bytes_mb = bytes_ / 1048576.0;
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double rate = bytes_mb / elapsed;
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double throughput = (double)done_/elapsed;
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long percent_writes = (writes_ * 100) / done_;
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fprintf(stdout, "%-12s: ", name);
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fprintf(stdout, "%.3f micros/op %ld ops/sec\n",
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seconds_ * 1e6 / done_, (long)throughput);
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fprintf(stdout, "%-12s: Wrote %.2f MB (%.2f MB/sec) (%ld%% of %ld ops)\n",
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"", bytes_mb, rate, (100*writes_)/done_, done_);
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if (FLAGS_histogram) {
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fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str());
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}
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fflush(stdout);
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}
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};
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// State shared by all concurrent executions of the same benchmark.
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class SharedState {
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public:
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static const uint32_t SENTINEL = 0xffffffff;
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SharedState(StressTest* stress_test) :
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cv_(&mu_),
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seed_(FLAGS_seed),
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max_key_(FLAGS_max_key),
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log2_keys_per_lock_(FLAGS_log2_keys_per_lock),
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num_threads_(FLAGS_threads),
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num_initialized_(0),
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num_populated_(0),
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num_done_(0),
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start_(false),
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start_verify_(false),
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stress_test_(stress_test) {
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values_ = new uint32_t[max_key_];
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for (long i = 0; i < max_key_; i++) {
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values_[i] = SENTINEL;
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}
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long num_locks = (max_key_ >> log2_keys_per_lock_);
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if (max_key_ & ((1 << log2_keys_per_lock_) - 1)) {
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num_locks ++;
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}
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fprintf(stdout, "Creating %ld locks\n", num_locks);
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key_locks_ = new port::Mutex[num_locks];
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}
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~SharedState() {
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delete[] values_;
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delete[] key_locks_;
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}
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port::Mutex* GetMutex() {
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return &mu_;
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}
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port::CondVar* GetCondVar() {
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return &cv_;
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}
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StressTest* GetStressTest() const {
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return stress_test_;
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}
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long GetMaxKey() const {
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return max_key_;
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}
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uint32_t GetNumThreads() const {
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return num_threads_;
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}
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void IncInitialized() {
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num_initialized_++;
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}
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void IncPopulated() {
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num_populated_++;
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}
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void IncDone() {
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num_done_++;
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}
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bool AllInitialized() const {
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return num_initialized_ >= num_threads_;
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}
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bool AllPopulated() const {
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return num_populated_ >= num_threads_;
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}
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bool AllDone() const {
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return num_done_ >= num_threads_;
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}
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void SetStart() {
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start_ = true;
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}
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void SetStartVerify() {
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start_verify_ = true;
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}
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bool Started() const {
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return start_;
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}
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bool VerifyStarted() const {
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return start_verify_;
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}
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port::Mutex* GetMutexForKey(long key) {
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return &key_locks_[key >> log2_keys_per_lock_];
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}
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void Put(long key, uint32_t value_base) {
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values_[key] = value_base;
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}
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uint32_t Get(long key) const {
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return values_[key];
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}
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uint32_t GetSeed() const {
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return seed_;
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}
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private:
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port::Mutex mu_;
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port::CondVar cv_;
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const uint32_t seed_;
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const long max_key_;
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const uint32_t log2_keys_per_lock_;
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const int num_threads_;
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long num_initialized_;
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long num_populated_;
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long num_done_;
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bool start_;
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bool start_verify_;
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StressTest* stress_test_;
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uint32_t *values_;
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port::Mutex *key_locks_;
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};
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// Per-thread state for concurrent executions of the same benchmark.
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struct ThreadState {
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uint32_t tid; // 0..n-1
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Random rand; // Has different seeds for different threads
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SharedState* shared;
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Stats stats;
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ThreadState(uint32_t index, SharedState *shared)
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: tid(index),
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rand(1000 + index + shared->GetSeed()),
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shared(shared) {
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}
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};
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} // namespace
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class StressTest {
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public:
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StressTest()
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: cache_(NewLRUCache(FLAGS_cache_size)),
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filter_policy_(FLAGS_bloom_bits >= 0
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? NewBloomFilterPolicy(FLAGS_bloom_bits)
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: NULL),
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db_(NULL) {
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std::vector<std::string> files;
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FLAGS_env->GetChildren(FLAGS_db, &files);
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for (int i = 0; i < files.size(); i++) {
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if (Slice(files[i]).starts_with("heap-")) {
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FLAGS_env->DeleteFile(std::string(FLAGS_db) + "/" + files[i]);
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}
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}
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DestroyDB(FLAGS_db, Options());
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}
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~StressTest() {
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delete db_;
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delete cache_;
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delete filter_policy_;
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}
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void Run() {
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PrintEnv();
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Open();
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SharedState shared(this);
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uint32_t n = shared.GetNumThreads();
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std::vector<ThreadState*> threads(n);
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for (uint32_t i = 0; i < n; i++) {
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threads[i] = new ThreadState(i, &shared);
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FLAGS_env->StartThread(ThreadBody, threads[i]);
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}
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// Each thread goes through the following states:
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// initializing -> wait for others to init -> populate
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// wait for others to populate -> verify -> done
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{
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MutexLock l(shared.GetMutex());
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while (!shared.AllInitialized()) {
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shared.GetCondVar()->Wait();
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}
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fprintf(stdout, "Starting to populate db\n");
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shared.SetStart();
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shared.GetCondVar()->SignalAll();
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while (!shared.AllPopulated()) {
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shared.GetCondVar()->Wait();
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}
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fprintf(stdout, "Starting verification\n");
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shared.SetStartVerify();
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shared.GetCondVar()->SignalAll();
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while (!shared.AllDone()) {
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shared.GetCondVar()->Wait();
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}
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}
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for (int i = 1; i < n; i++) {
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threads[0]->stats.Merge(threads[i]->stats);
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}
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threads[0]->stats.Report("Stress Test");
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for (int i = 0; i < n; i++) {
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delete threads[i];
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threads[i] = NULL;
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}
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fprintf(stdout, "Verification successfull\n");
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PrintStatistics();
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}
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private:
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static void ThreadBody(void* v) {
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ThreadState* thread = reinterpret_cast<ThreadState*>(v);
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SharedState* shared = thread->shared;
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{
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MutexLock l(shared->GetMutex());
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shared->IncInitialized();
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if (shared->AllInitialized()) {
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shared->GetCondVar()->SignalAll();
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}
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while (!shared->Started()) {
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shared->GetCondVar()->Wait();
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}
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}
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thread->shared->GetStressTest()->PopulateDb(thread);
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{
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MutexLock l(shared->GetMutex());
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shared->IncPopulated();
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if (shared->AllPopulated()) {
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shared->GetCondVar()->SignalAll();
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}
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while (!shared->VerifyStarted()) {
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shared->GetCondVar()->Wait();
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}
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}
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thread->shared->GetStressTest()->VerifyDb(*(thread->shared), thread->tid);
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{
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MutexLock l(shared->GetMutex());
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shared->IncDone();
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if (shared->AllDone()) {
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shared->GetCondVar()->SignalAll();
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}
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}
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}
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void PopulateDb(ThreadState* thread) {
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ReadOptions read_opts(FLAGS_verify_checksum, true);
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WriteOptions write_opts;
|
||||
char value[100], prev_value[100];
|
||||
long max_key = thread->shared->GetMaxKey();
|
||||
std::string from_db;
|
||||
if (FLAGS_sync) {
|
||||
write_opts.sync = true;
|
||||
}
|
||||
write_opts.disableWAL = FLAGS_disable_wal;
|
||||
|
||||
thread->stats.Start();
|
||||
for (long i=0; i < FLAGS_ops_per_thread; i++) {
|
||||
long rand_key = thread->rand.Next() % max_key;
|
||||
Slice key((char*)&rand_key, sizeof(rand_key));
|
||||
if (FLAGS_readwritepercent > thread->rand.Uniform(100)) {
|
||||
// introduce some read load.
|
||||
db_->Get(read_opts, key, &from_db);
|
||||
} else {
|
||||
uint32_t value_base = thread->rand.Next();
|
||||
size_t sz = GenerateValue(value_base, value, sizeof(value));
|
||||
Slice v(value, sz);
|
||||
{
|
||||
MutexLock l(thread->shared->GetMutexForKey(rand_key));
|
||||
if (FLAGS_verify_before_write) {
|
||||
VerifyValue(rand_key, read_opts, *(thread->shared), prev_value,
|
||||
sizeof(prev_value), &from_db, true);
|
||||
}
|
||||
thread->shared->Put(rand_key, value_base);
|
||||
db_->Put(write_opts, key, v);
|
||||
}
|
||||
PrintKeyValue(rand_key, value, sz);
|
||||
thread->stats.AddBytesForOneWrite(sz);
|
||||
}
|
||||
thread->stats.FinishedSingleOp();
|
||||
}
|
||||
thread->stats.Stop();
|
||||
}
|
||||
|
||||
void VerifyDb(const SharedState &shared, long start) const {
|
||||
ReadOptions options(FLAGS_verify_checksum, true);
|
||||
char value[100];
|
||||
long max_key = shared.GetMaxKey();
|
||||
long step = shared.GetNumThreads();
|
||||
for (long i = start; i < max_key; i+= step) {
|
||||
std::string from_db;
|
||||
VerifyValue(i, options, shared, value, sizeof(value), &from_db);
|
||||
if (from_db.length()) {
|
||||
PrintKeyValue(i, from_db.data(), from_db.length());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void VerifyValue(long key, const ReadOptions &opts, const SharedState &shared,
|
||||
char *value, size_t value_sz,
|
||||
std::string *value_from_db, bool strict=false) const {
|
||||
Slice k((char*)&key, sizeof(key));
|
||||
uint32_t value_base = shared.Get(key);
|
||||
if (value_base == SharedState::SENTINEL && !strict) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (db_->Get(opts, k, value_from_db).ok()) {
|
||||
if (value_base == SharedState::SENTINEL) {
|
||||
VerificationAbort("Unexpected value found", key);
|
||||
}
|
||||
size_t sz = GenerateValue(value_base, value, value_sz);
|
||||
if (value_from_db->length() != sz) {
|
||||
VerificationAbort("Length of value read is not equal", key);
|
||||
}
|
||||
if (memcmp(value_from_db->data(), value, sz) != 0) {
|
||||
VerificationAbort("Contents of value read don't match", key);
|
||||
}
|
||||
} else {
|
||||
if (value_base != SharedState::SENTINEL) {
|
||||
VerificationAbort("Value not found", key);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void PrintKeyValue(uint32_t key, const char *value, size_t sz) {
|
||||
if (!FLAGS_verbose) return;
|
||||
fprintf(stdout, "%u ==> (%u) ", key, sz);
|
||||
for (size_t i=0; i<sz; i++) {
|
||||
fprintf(stdout, "%X", value[i]);
|
||||
}
|
||||
fprintf(stdout, "\n");
|
||||
}
|
||||
|
||||
static size_t GenerateValue(uint32_t rand, char *v, size_t max_sz) {
|
||||
size_t value_sz = ((rand % 3) + 1) * FLAGS_value_size_mult;
|
||||
assert(value_sz <= max_sz && value_sz >= sizeof(uint32_t));
|
||||
*((uint32_t*)v) = rand;
|
||||
char c = (char) rand;
|
||||
for (size_t i=sizeof(uint32_t); i < value_sz; i++) {
|
||||
v[i] = (char)(rand ^ i);
|
||||
}
|
||||
return value_sz; // the size of the value set.
|
||||
}
|
||||
|
||||
void VerificationAbort(char *msg, long key) const {
|
||||
fprintf(stderr, "Verification failed for key %ld: %s\n", key, msg);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
void PrintEnv() const {
|
||||
fprintf(stdout, "LevelDB version : %d.%d\n",
|
||||
kMajorVersion, kMinorVersion);
|
||||
fprintf(stdout, "Number of threads : %d\n", FLAGS_threads);
|
||||
fprintf(stdout, "Ops per thread : %ld\n", FLAGS_ops_per_thread);
|
||||
fprintf(stdout, "Read percentage : %ld\n", FLAGS_readwritepercent);
|
||||
fprintf(stdout, "Max key : %ld\n", FLAGS_max_key);
|
||||
fprintf(stdout, "Num keys per lock : %ld\n",
|
||||
1 << FLAGS_log2_keys_per_lock);
|
||||
|
||||
char* compression;
|
||||
switch (FLAGS_compression_type) {
|
||||
case leveldb::kNoCompression:
|
||||
compression = "none";
|
||||
break;
|
||||
case leveldb::kSnappyCompression:
|
||||
compression = "snappy";
|
||||
break;
|
||||
case leveldb::kZlibCompression:
|
||||
compression = "zlib";
|
||||
break;
|
||||
case leveldb::kBZip2Compression:
|
||||
compression = "bzip2";
|
||||
break;
|
||||
}
|
||||
|
||||
fprintf(stdout, "Compression : %s\n", compression);
|
||||
fprintf(stdout, "------------------------------------------------\n");
|
||||
}
|
||||
|
||||
void Open() {
|
||||
assert(db_ == NULL);
|
||||
Options options;
|
||||
options.block_cache = cache_;
|
||||
options.write_buffer_size = FLAGS_write_buffer_size;
|
||||
options.block_size = FLAGS_block_size;
|
||||
options.filter_policy = filter_policy_;
|
||||
options.max_open_files = FLAGS_open_files;
|
||||
options.statistics = dbstats;
|
||||
options.env = FLAGS_env;
|
||||
options.disableDataSync = FLAGS_disable_data_sync;
|
||||
options.use_fsync = FLAGS_use_fsync;
|
||||
options.target_file_size_base = FLAGS_target_file_size_base;
|
||||
options.target_file_size_multiplier = FLAGS_target_file_size_multiplier;
|
||||
options.max_bytes_for_level_base = FLAGS_max_bytes_for_level_base;
|
||||
options.max_bytes_for_level_multiplier =
|
||||
FLAGS_max_bytes_for_level_multiplier;
|
||||
options.level0_stop_writes_trigger = FLAGS_level0_stop_writes_trigger;
|
||||
options.level0_slowdown_writes_trigger =
|
||||
FLAGS_level0_slowdown_writes_trigger;
|
||||
options.compression = FLAGS_compression_type;
|
||||
options.create_if_missing = true;
|
||||
options.disable_seek_compaction = FLAGS_disable_seek_compaction;
|
||||
Status s = DB::Open(options, FLAGS_db, &db_);
|
||||
if (!s.ok()) {
|
||||
fprintf(stderr, "open error: %s\n", s.ToString().c_str());
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
void PrintStatistics() {
|
||||
if (dbstats) {
|
||||
fprintf(stdout, "File opened:%ld closed:%ld errors:%ld\n",
|
||||
dbstats->getNumFileOpens(),
|
||||
dbstats->getNumFileCloses(),
|
||||
dbstats->getNumFileErrors());
|
||||
}
|
||||
}
|
||||
|
||||
private:
|
||||
Cache* cache_;
|
||||
const FilterPolicy* filter_policy_;
|
||||
DB* db_;
|
||||
};
|
||||
|
||||
} // namespace leveldb
|
||||
|
||||
int main(int argc, char** argv) {
|
||||
FLAGS_write_buffer_size = leveldb::Options().write_buffer_size;
|
||||
FLAGS_open_files = leveldb::Options().max_open_files;
|
||||
// Compression test code above refers to FLAGS_block_size
|
||||
FLAGS_block_size = leveldb::Options().block_size;
|
||||
std::string default_db_path;
|
||||
|
||||
for (int i = 1; i < argc; i++) {
|
||||
double d;
|
||||
int n;
|
||||
uint32_t u;
|
||||
long l;
|
||||
char junk;
|
||||
char hdfsname[2048];
|
||||
|
||||
if (sscanf(argv[i], "--seed=%uf%c", &u, &junk) == 1) {
|
||||
FLAGS_seed = u;
|
||||
} else if (sscanf(argv[i], "--max_key=%ld%c", &l, &junk) == 1) {
|
||||
FLAGS_max_key = l;
|
||||
} else if (sscanf(argv[i], "--log2_keys_per_lock=%u%c", &u, &junk) == 1) {
|
||||
FLAGS_log2_keys_per_lock = u;
|
||||
} else if (sscanf(argv[i], "--ops_per_thread=%u%c", &u, &junk) == 1) {
|
||||
FLAGS_ops_per_thread = u;
|
||||
} else if (sscanf(argv[i], "--verbose=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_verbose = n;
|
||||
} else if (sscanf(argv[i], "--histogram=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_histogram = n;
|
||||
} else if (sscanf(argv[i], "--verify_before_write=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_verify_before_write = n;
|
||||
} else if (sscanf(argv[i], "--threads=%d%c", &n, &junk) == 1) {
|
||||
FLAGS_threads = n;
|
||||
} else if (sscanf(argv[i], "--value_size_mult=%d%c", &n, &junk) == 1) {
|
||||
FLAGS_value_size_mult = n;
|
||||
} else if (sscanf(argv[i], "--write_buffer_size=%d%c", &n, &junk) == 1) {
|
||||
FLAGS_write_buffer_size = n;
|
||||
} else if (sscanf(argv[i], "--cache_size=%ld%c", &l, &junk) == 1) {
|
||||
FLAGS_cache_size = l;
|
||||
} else if (sscanf(argv[i], "--block_size=%d%c", &n, &junk) == 1) {
|
||||
FLAGS_block_size = n;
|
||||
} else if (sscanf(argv[i], "--bloom_bits=%d%c", &n, &junk) == 1) {
|
||||
FLAGS_bloom_bits = n;
|
||||
} else if (sscanf(argv[i], "--open_files=%d%c", &n, &junk) == 1) {
|
||||
FLAGS_open_files = n;
|
||||
} else if (strncmp(argv[i], "--db=", 5) == 0) {
|
||||
FLAGS_db = argv[i] + 5;
|
||||
} else if (sscanf(argv[i], "--verify_checksum=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_verify_checksum = n;
|
||||
} else if (sscanf(argv[i], "--bufferedio=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
useOsBuffer = n;
|
||||
} else if (sscanf(argv[i], "--mmap_read=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
useMmapRead = n;
|
||||
} else if (sscanf(argv[i], "--readhead=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
useFsReadAhead = n;
|
||||
} else if (sscanf(argv[i], "--statistics=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
if (n == 1) {
|
||||
dbstats = new leveldb::DBStatistics();
|
||||
}
|
||||
} else if (sscanf(argv[i], "--sync=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_sync = n;
|
||||
} else if (sscanf(argv[i], "--readwritepercent=%d%c", &n, &junk) == 1 &&
|
||||
(n > 0 || n < 100)) {
|
||||
FLAGS_readwritepercent = n;
|
||||
} else if (sscanf(argv[i], "--disable_data_sync=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_disable_data_sync = n;
|
||||
} else if (sscanf(argv[i], "--use_fsync=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_use_fsync = n;
|
||||
} else if (sscanf(argv[i], "--disable_wal=%d%c", &n, &junk) == 1 &&
|
||||
(n == 0 || n == 1)) {
|
||||
FLAGS_disable_wal = n;
|
||||
} else if (sscanf(argv[i], "--hdfs=%s", hdfsname) == 1) {
|
||||
FLAGS_env = new leveldb::HdfsEnv(hdfsname);
|
||||
} else if (sscanf(argv[i], "--target_file_size_base=%d%c",
|
||||
&n, &junk) == 1) {
|
||||
FLAGS_target_file_size_base = n;
|
||||
} else if ( sscanf(argv[i], "--target_file_size_multiplier=%d%c",
|
||||
&n, &junk) == 1) {
|
||||
FLAGS_target_file_size_multiplier = n;
|
||||
} else if (
|
||||
sscanf(argv[i], "--max_bytes_for_level_base=%d%c", &n, &junk) == 1) {
|
||||
FLAGS_max_bytes_for_level_base = n;
|
||||
} else if (sscanf(argv[i], "--max_bytes_for_level_multiplier=%d%c",
|
||||
&n, &junk) == 1) {
|
||||
FLAGS_max_bytes_for_level_multiplier = n;
|
||||
} else if (sscanf(argv[i],"--level0_stop_writes_trigger=%d%c",
|
||||
&n, &junk) == 1) {
|
||||
FLAGS_level0_stop_writes_trigger = n;
|
||||
} else if (sscanf(argv[i],"--level0_slowdown_writes_trigger=%d%c",
|
||||
&n, &junk) == 1) {
|
||||
FLAGS_level0_slowdown_writes_trigger = n;
|
||||
} else if (strncmp(argv[i], "--compression_type=", 19) == 0) {
|
||||
const char* ctype = argv[i] + 19;
|
||||
if (!strcasecmp(ctype, "none"))
|
||||
FLAGS_compression_type = leveldb::kNoCompression;
|
||||
else if (!strcasecmp(ctype, "snappy"))
|
||||
FLAGS_compression_type = leveldb::kSnappyCompression;
|
||||
else if (!strcasecmp(ctype, "zlib"))
|
||||
FLAGS_compression_type = leveldb::kZlibCompression;
|
||||
else if (!strcasecmp(ctype, "bzip2"))
|
||||
FLAGS_compression_type = leveldb::kBZip2Compression;
|
||||
else {
|
||||
fprintf(stdout, "Cannot parse %s\n", argv[i]);
|
||||
}
|
||||
} else if (sscanf(argv[i], "--disable_seek_compaction=%d%c", &n, &junk) == 1
|
||||
&& (n == 0 || n == 1)) {
|
||||
FLAGS_disable_seek_compaction = n;
|
||||
} else {
|
||||
fprintf(stderr, "Invalid flag '%s'\n", argv[i]);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
// Choose a location for the test database if none given with --db=<path>
|
||||
if (FLAGS_db == NULL) {
|
||||
leveldb::Env::Default()->GetTestDirectory(&default_db_path);
|
||||
default_db_path += "/dbstress";
|
||||
FLAGS_db = default_db_path.c_str();
|
||||
}
|
||||
|
||||
leveldb::StressTest stress;
|
||||
stress.Run();
|
||||
if (dbstats) {
|
||||
delete dbstats;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user