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cf5adc8016
Summary: The parameter delete_obsolete_files_period_micros controls the periodicity of deleting obsolete files. db_bench was reading in this parameter intoa local variable called 'l' but was incorrectly using another local variable called 'n' while setting it in the db.options data structure. This patch also logs the value of delete_obsolete_files_period_micros in the LOG file at db startup time. I am hoping that this will improve the overall write throughput drastically. Test Plan: run db_bench Reviewers: MarkCallaghan, heyongqiang Reviewed By: MarkCallaghan Differential Revision: https://reviews.facebook.net/D6099
102 lines
4.1 KiB
C++
102 lines
4.1 KiB
C++
// 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 "leveldb/options.h"
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#include "leveldb/comparator.h"
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#include "leveldb/env.h"
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#include "leveldb/filter_policy.h"
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#include "leveldb/cache.h"
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namespace leveldb {
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Options::Options()
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: comparator(BytewiseComparator()),
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create_if_missing(false),
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error_if_exists(false),
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paranoid_checks(false),
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env(Env::Default()),
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info_log(NULL),
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write_buffer_size(4<<20),
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max_open_files(1000),
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block_cache(NULL),
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block_size(4096),
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block_restart_interval(16),
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compression(kSnappyCompression),
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filter_policy(NULL),
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num_levels(7),
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level0_file_num_compaction_trigger(4),
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level0_slowdown_writes_trigger(8),
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level0_stop_writes_trigger(12),
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max_mem_compaction_level(2),
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target_file_size_base(2 * 1048576),
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target_file_size_multiplier(1),
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max_bytes_for_level_base(10 * 1048576),
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max_bytes_for_level_multiplier(10),
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expanded_compaction_factor(25),
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max_grandparent_overlap_factor(10),
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statistics(NULL),
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disableDataSync(false),
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use_fsync(false),
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db_stats_log_interval(1800),
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db_log_dir(""),
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disable_seek_compaction(false),
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delete_obsolete_files_period_micros(0) {
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}
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void
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Options::Dump(
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Logger * log) const
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{
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Log(log," Options.comparator: %s", comparator->Name());
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Log(log," Options.create_if_missing: %d", create_if_missing);
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Log(log," Options.error_if_exists: %d", error_if_exists);
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Log(log," Options.paranoid_checks: %d", paranoid_checks);
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Log(log," Options.env: %p", env);
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Log(log," Options.info_log: %p", info_log);
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Log(log," Options.write_buffer_size: %zd", write_buffer_size);
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Log(log," Options.max_open_files: %d", max_open_files);
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Log(log," Options.block_cache: %p", block_cache);
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Log(log," Options.block_cache_size: %zd", block_cache->GetCapacity());
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Log(log," Options.block_size: %zd", block_size);
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Log(log,"Options.block_restart_interval: %d", block_restart_interval);
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Log(log," Options.compression: %d", compression);
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Log(log," Options.filter_policy: %s",
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filter_policy == NULL ? "NULL" : filter_policy->Name());
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Log(log," Options.num_levels: %d", num_levels);
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Log(log," Options.disableDataSync: %d", disableDataSync);
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Log(log," Options.use_fsync: %d", use_fsync);
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Log(log," Options.db_stats_log_interval: %d",
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db_stats_log_interval);
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Log(log," Options.level0_file_num_compaction_trigger: %d",
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level0_file_num_compaction_trigger);
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Log(log," Options.level0_slowdown_writes_trigger: %d",
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level0_slowdown_writes_trigger);
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Log(log," Options.level0_stop_writes_trigger: %d",
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level0_stop_writes_trigger);
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Log(log," Options.max_mem_compaction_level: %d",
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max_mem_compaction_level);
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Log(log," Options.target_file_size_base: %d",
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target_file_size_base);
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Log(log," Options.target_file_size_multiplier: %d",
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target_file_size_multiplier);
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Log(log," Options.max_bytes_for_level_base: %d",
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max_bytes_for_level_base);
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Log(log," Options.max_bytes_for_level_multiplier: %d",
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max_bytes_for_level_multiplier);
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Log(log," Options.expanded_compaction_factor: %d",
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expanded_compaction_factor);
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Log(log," Options.max_grandparent_overlap_factor: %d",
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max_grandparent_overlap_factor);
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Log(log," Options.db_log_dir: %s",
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db_log_dir.c_str());
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Log(log," Options.disable_seek_compaction: %d",
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disable_seek_compaction);
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Log(log," Options.delete_obsolete_files_period_micros: %ld",
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delete_obsolete_files_period_micros);
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} // Options::Dump
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} // namespace leveldb
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