35ca59364c
Summary: When we first started, max_background_flushes was 0 by default and compaction thread was executing flushes (since there was no flush thread). Then, we switched the default max_background_flushes to 1. However, we still support the case where there is no flush thread and flushes are done in compaction. This is making our code a bit more complicated. By not supporting this use-case we can make our code simpler. We have a special case that when you set max_background_flushes to 0, we schedule the flush to execute on the compaction thread. Test Plan: make check (there might be some unit tests that depend on this behavior) Reviewers: IslamAbdelRahman, yhchiang, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D41931
123 lines
4.5 KiB
C++
123 lines
4.5 KiB
C++
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
|
|
#ifndef __STDC_FORMAT_MACROS
|
|
#define __STDC_FORMAT_MACROS
|
|
#endif
|
|
|
|
#include <inttypes.h>
|
|
#include <limits>
|
|
#include <cassert>
|
|
#include <string>
|
|
#include "port/port.h"
|
|
#include "rocksdb/env.h"
|
|
#include "rocksdb/options.h"
|
|
#include "rocksdb/immutable_options.h"
|
|
#include "util/mutable_cf_options.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
// Multiple two operands. If they overflow, return op1.
|
|
uint64_t MultiplyCheckOverflow(uint64_t op1, int op2) {
|
|
if (op1 == 0) {
|
|
return 0;
|
|
}
|
|
if (op2 <= 0) {
|
|
return op1;
|
|
}
|
|
uint64_t casted_op2 = (uint64_t) op2;
|
|
if (std::numeric_limits<uint64_t>::max() / op1 < casted_op2) {
|
|
return op1;
|
|
}
|
|
return op1 * casted_op2;
|
|
}
|
|
|
|
void MutableCFOptions::RefreshDerivedOptions(
|
|
const ImmutableCFOptions& ioptions) {
|
|
max_file_size.resize(ioptions.num_levels);
|
|
for (int i = 0; i < ioptions.num_levels; ++i) {
|
|
if (i == 0 && ioptions.compaction_style == kCompactionStyleUniversal) {
|
|
max_file_size[i] = ULLONG_MAX;
|
|
} else if (i > 1) {
|
|
max_file_size[i] = MultiplyCheckOverflow(max_file_size[i - 1],
|
|
target_file_size_multiplier);
|
|
} else {
|
|
max_file_size[i] = target_file_size_base;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint64_t MutableCFOptions::MaxFileSizeForLevel(int level) const {
|
|
assert(level >= 0);
|
|
assert(level < (int)max_file_size.size());
|
|
return max_file_size[level];
|
|
}
|
|
uint64_t MutableCFOptions::MaxGrandParentOverlapBytes(int level) const {
|
|
return MaxFileSizeForLevel(level) * max_grandparent_overlap_factor;
|
|
}
|
|
uint64_t MutableCFOptions::ExpandedCompactionByteSizeLimit(int level) const {
|
|
return MaxFileSizeForLevel(level) * expanded_compaction_factor;
|
|
}
|
|
|
|
void MutableCFOptions::Dump(Logger* log) const {
|
|
// Memtable related options
|
|
Log(log, " write_buffer_size: %" ROCKSDB_PRIszt,
|
|
write_buffer_size);
|
|
Log(log, " max_write_buffer_number: %d",
|
|
max_write_buffer_number);
|
|
Log(log, " arena_block_size: %" ROCKSDB_PRIszt,
|
|
arena_block_size);
|
|
Log(log, " memtable_prefix_bloom_bits: %" PRIu32,
|
|
memtable_prefix_bloom_bits);
|
|
Log(log, " memtable_prefix_bloom_probes: %" PRIu32,
|
|
memtable_prefix_bloom_probes);
|
|
Log(log, " memtable_prefix_bloom_huge_page_tlb_size: %" ROCKSDB_PRIszt,
|
|
memtable_prefix_bloom_huge_page_tlb_size);
|
|
Log(log, " max_successive_merges: %" ROCKSDB_PRIszt,
|
|
max_successive_merges);
|
|
Log(log, " filter_deletes: %d",
|
|
filter_deletes);
|
|
Log(log, " disable_auto_compactions: %d",
|
|
disable_auto_compactions);
|
|
Log(log, " soft_rate_limit: %lf",
|
|
soft_rate_limit);
|
|
Log(log, " hard_rate_limit: %lf",
|
|
hard_rate_limit);
|
|
Log(log, " level0_file_num_compaction_trigger: %d",
|
|
level0_file_num_compaction_trigger);
|
|
Log(log, " level0_slowdown_writes_trigger: %d",
|
|
level0_slowdown_writes_trigger);
|
|
Log(log, " level0_stop_writes_trigger: %d",
|
|
level0_stop_writes_trigger);
|
|
Log(log, " max_grandparent_overlap_factor: %d",
|
|
max_grandparent_overlap_factor);
|
|
Log(log, " expanded_compaction_factor: %d",
|
|
expanded_compaction_factor);
|
|
Log(log, " source_compaction_factor: %d",
|
|
source_compaction_factor);
|
|
Log(log, " target_file_size_base: %" PRIu64,
|
|
target_file_size_base);
|
|
Log(log, " target_file_size_multiplier: %d",
|
|
target_file_size_multiplier);
|
|
Log(log, " max_bytes_for_level_base: %" PRIu64,
|
|
max_bytes_for_level_base);
|
|
Log(log, " max_bytes_for_level_multiplier: %d",
|
|
max_bytes_for_level_multiplier);
|
|
std::string result;
|
|
char buf[10];
|
|
for (const auto m : max_bytes_for_level_multiplier_additional) {
|
|
snprintf(buf, sizeof(buf), "%d, ", m);
|
|
result += buf;
|
|
}
|
|
result.resize(result.size() - 2);
|
|
Log(log, "max_bytes_for_level_multiplier_additional: %s", result.c_str());
|
|
Log(log, " verify_checksums_in_compaction: %d",
|
|
verify_checksums_in_compaction);
|
|
Log(log, " max_sequential_skip_in_iterations: %" PRIu64,
|
|
max_sequential_skip_in_iterations);
|
|
}
|
|
|
|
} // namespace rocksdb
|