fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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670 lines
29 KiB
670 lines
29 KiB
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same 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 "rocksdb/options.h"
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#include "rocksdb/immutable_options.h"
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#ifndef __STDC_FORMAT_MACROS
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#define __STDC_FORMAT_MACROS
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#endif
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#include <inttypes.h>
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#include <limits>
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#include "db/writebuffer.h"
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#include "rocksdb/cache.h"
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#include "rocksdb/compaction_filter.h"
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#include "rocksdb/comparator.h"
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#include "rocksdb/env.h"
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#include "rocksdb/memtablerep.h"
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#include "rocksdb/merge_operator.h"
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#include "rocksdb/slice.h"
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#include "rocksdb/slice_transform.h"
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#include "rocksdb/table.h"
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#include "rocksdb/table_properties.h"
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#include "table/block_based_table_factory.h"
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#include "util/compression.h"
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#include "util/statistics.h"
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#include "util/xfunc.h"
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namespace rocksdb {
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ImmutableCFOptions::ImmutableCFOptions(const Options& options)
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: compaction_style(options.compaction_style),
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compaction_options_universal(options.compaction_options_universal),
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compaction_options_fifo(options.compaction_options_fifo),
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prefix_extractor(options.prefix_extractor.get()),
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comparator(options.comparator),
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merge_operator(options.merge_operator.get()),
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compaction_filter(options.compaction_filter),
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compaction_filter_factory(options.compaction_filter_factory.get()),
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compaction_filter_factory_v2(options.compaction_filter_factory_v2.get()),
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inplace_update_support(options.inplace_update_support),
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inplace_callback(options.inplace_callback),
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info_log(options.info_log.get()),
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statistics(options.statistics.get()),
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env(options.env),
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allow_mmap_reads(options.allow_mmap_reads),
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allow_mmap_writes(options.allow_mmap_writes),
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db_paths(options.db_paths),
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memtable_factory(options.memtable_factory.get()),
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table_factory(options.table_factory.get()),
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table_properties_collector_factories(
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options.table_properties_collector_factories),
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advise_random_on_open(options.advise_random_on_open),
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bloom_locality(options.bloom_locality),
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purge_redundant_kvs_while_flush(options.purge_redundant_kvs_while_flush),
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min_partial_merge_operands(options.min_partial_merge_operands),
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disable_data_sync(options.disableDataSync),
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use_fsync(options.use_fsync),
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compression(options.compression),
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compression_per_level(options.compression_per_level),
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compression_opts(options.compression_opts),
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level_compaction_dynamic_level_bytes(
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options.level_compaction_dynamic_level_bytes),
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access_hint_on_compaction_start(options.access_hint_on_compaction_start),
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num_levels(options.num_levels),
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optimize_filters_for_hits(options.optimize_filters_for_hits),
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listeners(options.listeners),
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row_cache(options.row_cache) {}
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ColumnFamilyOptions::ColumnFamilyOptions()
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: comparator(BytewiseComparator()),
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merge_operator(nullptr),
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compaction_filter(nullptr),
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compaction_filter_factory(nullptr),
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compaction_filter_factory_v2(nullptr),
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write_buffer_size(4 << 20),
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max_write_buffer_number(2),
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min_write_buffer_number_to_merge(1),
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max_write_buffer_number_to_maintain(0),
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compression(Snappy_Supported() ? kSnappyCompression : kNoCompression),
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prefix_extractor(nullptr),
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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(20),
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level0_stop_writes_trigger(24),
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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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level_compaction_dynamic_level_bytes(false),
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max_bytes_for_level_multiplier(10),
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max_bytes_for_level_multiplier_additional(num_levels, 1),
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expanded_compaction_factor(25),
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source_compaction_factor(1),
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max_grandparent_overlap_factor(10),
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soft_rate_limit(0.0),
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hard_rate_limit(0.0),
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rate_limit_delay_max_milliseconds(1000),
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arena_block_size(0),
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disable_auto_compactions(false),
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purge_redundant_kvs_while_flush(true),
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compaction_style(kCompactionStyleLevel),
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verify_checksums_in_compaction(true),
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filter_deletes(false),
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max_sequential_skip_in_iterations(8),
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memtable_factory(std::shared_ptr<SkipListFactory>(new SkipListFactory)),
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table_factory(
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std::shared_ptr<TableFactory>(new BlockBasedTableFactory())),
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inplace_update_support(false),
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inplace_update_num_locks(10000),
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inplace_callback(nullptr),
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memtable_prefix_bloom_bits(0),
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memtable_prefix_bloom_probes(6),
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memtable_prefix_bloom_huge_page_tlb_size(0),
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bloom_locality(0),
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max_successive_merges(0),
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min_partial_merge_operands(2),
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optimize_filters_for_hits(false),
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paranoid_file_checks(false) {
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assert(memtable_factory.get() != nullptr);
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}
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ColumnFamilyOptions::ColumnFamilyOptions(const Options& options)
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: comparator(options.comparator),
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merge_operator(options.merge_operator),
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compaction_filter(options.compaction_filter),
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compaction_filter_factory(options.compaction_filter_factory),
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compaction_filter_factory_v2(options.compaction_filter_factory_v2),
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write_buffer_size(options.write_buffer_size),
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max_write_buffer_number(options.max_write_buffer_number),
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min_write_buffer_number_to_merge(
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options.min_write_buffer_number_to_merge),
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max_write_buffer_number_to_maintain(
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options.max_write_buffer_number_to_maintain),
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compression(options.compression),
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compression_per_level(options.compression_per_level),
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compression_opts(options.compression_opts),
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prefix_extractor(options.prefix_extractor),
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num_levels(options.num_levels),
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level0_file_num_compaction_trigger(
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options.level0_file_num_compaction_trigger),
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level0_slowdown_writes_trigger(options.level0_slowdown_writes_trigger),
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level0_stop_writes_trigger(options.level0_stop_writes_trigger),
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max_mem_compaction_level(options.max_mem_compaction_level),
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target_file_size_base(options.target_file_size_base),
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target_file_size_multiplier(options.target_file_size_multiplier),
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max_bytes_for_level_base(options.max_bytes_for_level_base),
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level_compaction_dynamic_level_bytes(
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options.level_compaction_dynamic_level_bytes),
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max_bytes_for_level_multiplier(options.max_bytes_for_level_multiplier),
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max_bytes_for_level_multiplier_additional(
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options.max_bytes_for_level_multiplier_additional),
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expanded_compaction_factor(options.expanded_compaction_factor),
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source_compaction_factor(options.source_compaction_factor),
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max_grandparent_overlap_factor(options.max_grandparent_overlap_factor),
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soft_rate_limit(options.soft_rate_limit),
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hard_rate_limit(options.hard_rate_limit),
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rate_limit_delay_max_milliseconds(
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options.rate_limit_delay_max_milliseconds),
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arena_block_size(options.arena_block_size),
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disable_auto_compactions(options.disable_auto_compactions),
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purge_redundant_kvs_while_flush(options.purge_redundant_kvs_while_flush),
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compaction_style(options.compaction_style),
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verify_checksums_in_compaction(options.verify_checksums_in_compaction),
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compaction_options_universal(options.compaction_options_universal),
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compaction_options_fifo(options.compaction_options_fifo),
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filter_deletes(options.filter_deletes),
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max_sequential_skip_in_iterations(
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options.max_sequential_skip_in_iterations),
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memtable_factory(options.memtable_factory),
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table_factory(options.table_factory),
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table_properties_collector_factories(
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options.table_properties_collector_factories),
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inplace_update_support(options.inplace_update_support),
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inplace_update_num_locks(options.inplace_update_num_locks),
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inplace_callback(options.inplace_callback),
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memtable_prefix_bloom_bits(options.memtable_prefix_bloom_bits),
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memtable_prefix_bloom_probes(options.memtable_prefix_bloom_probes),
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memtable_prefix_bloom_huge_page_tlb_size(
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options.memtable_prefix_bloom_huge_page_tlb_size),
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bloom_locality(options.bloom_locality),
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max_successive_merges(options.max_successive_merges),
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min_partial_merge_operands(options.min_partial_merge_operands),
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optimize_filters_for_hits(options.optimize_filters_for_hits),
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paranoid_file_checks(options.paranoid_file_checks) {
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assert(memtable_factory.get() != nullptr);
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if (max_bytes_for_level_multiplier_additional.size() <
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static_cast<unsigned int>(num_levels)) {
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max_bytes_for_level_multiplier_additional.resize(num_levels, 1);
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}
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}
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DBOptions::DBOptions()
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: create_if_missing(false),
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create_missing_column_families(false),
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error_if_exists(false),
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paranoid_checks(true),
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env(Env::Default()),
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rate_limiter(nullptr),
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info_log(nullptr),
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#ifdef NDEBUG
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info_log_level(INFO_LEVEL),
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#else
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info_log_level(DEBUG_LEVEL),
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#endif // NDEBUG
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max_open_files(5000),
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max_total_wal_size(0),
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statistics(nullptr),
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disableDataSync(false),
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use_fsync(false),
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db_log_dir(""),
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wal_dir(""),
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delete_obsolete_files_period_micros(6 * 60 * 60 * 1000000UL),
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max_background_compactions(1),
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max_background_flushes(1),
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max_log_file_size(0),
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log_file_time_to_roll(0),
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keep_log_file_num(1000),
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max_manifest_file_size(std::numeric_limits<uint64_t>::max()),
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table_cache_numshardbits(4),
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WAL_ttl_seconds(0),
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WAL_size_limit_MB(0),
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manifest_preallocation_size(4 * 1024 * 1024),
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allow_os_buffer(true),
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allow_mmap_reads(false),
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allow_mmap_writes(false),
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is_fd_close_on_exec(true),
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skip_log_error_on_recovery(false),
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stats_dump_period_sec(600),
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advise_random_on_open(true),
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db_write_buffer_size(0),
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access_hint_on_compaction_start(NORMAL),
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use_adaptive_mutex(false),
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bytes_per_sync(0),
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wal_bytes_per_sync(0),
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listeners(),
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enable_thread_tracking(false),
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delayed_write_rate(1024U * 1024U),
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wal_recovery_mode(WALRecoveryMode::kTolerateCorruptedTailRecords) {
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}
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DBOptions::DBOptions(const Options& options)
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: create_if_missing(options.create_if_missing),
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create_missing_column_families(options.create_missing_column_families),
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error_if_exists(options.error_if_exists),
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paranoid_checks(options.paranoid_checks),
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env(options.env),
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rate_limiter(options.rate_limiter),
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info_log(options.info_log),
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info_log_level(options.info_log_level),
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max_open_files(options.max_open_files),
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max_total_wal_size(options.max_total_wal_size),
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statistics(options.statistics),
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disableDataSync(options.disableDataSync),
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use_fsync(options.use_fsync),
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db_paths(options.db_paths),
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db_log_dir(options.db_log_dir),
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wal_dir(options.wal_dir),
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delete_obsolete_files_period_micros(
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options.delete_obsolete_files_period_micros),
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max_background_compactions(options.max_background_compactions),
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max_background_flushes(options.max_background_flushes),
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max_log_file_size(options.max_log_file_size),
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log_file_time_to_roll(options.log_file_time_to_roll),
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keep_log_file_num(options.keep_log_file_num),
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max_manifest_file_size(options.max_manifest_file_size),
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table_cache_numshardbits(options.table_cache_numshardbits),
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WAL_ttl_seconds(options.WAL_ttl_seconds),
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WAL_size_limit_MB(options.WAL_size_limit_MB),
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manifest_preallocation_size(options.manifest_preallocation_size),
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allow_os_buffer(options.allow_os_buffer),
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allow_mmap_reads(options.allow_mmap_reads),
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allow_mmap_writes(options.allow_mmap_writes),
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is_fd_close_on_exec(options.is_fd_close_on_exec),
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skip_log_error_on_recovery(options.skip_log_error_on_recovery),
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stats_dump_period_sec(options.stats_dump_period_sec),
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advise_random_on_open(options.advise_random_on_open),
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db_write_buffer_size(options.db_write_buffer_size),
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access_hint_on_compaction_start(options.access_hint_on_compaction_start),
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use_adaptive_mutex(options.use_adaptive_mutex),
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bytes_per_sync(options.bytes_per_sync),
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wal_bytes_per_sync(options.wal_bytes_per_sync),
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listeners(options.listeners),
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enable_thread_tracking(options.enable_thread_tracking),
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delayed_write_rate(options.delayed_write_rate),
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wal_recovery_mode(options.wal_recovery_mode),
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row_cache(options.row_cache) {}
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static const char* const access_hints[] = {
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"NONE", "NORMAL", "SEQUENTIAL", "WILLNEED"
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};
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void DBOptions::Dump(Logger* log) const {
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Warn(log, " Options.error_if_exists: %d", error_if_exists);
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Warn(log, " Options.create_if_missing: %d", create_if_missing);
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Warn(log, " Options.paranoid_checks: %d", paranoid_checks);
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Warn(log, " Options.env: %p", env);
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Warn(log, " Options.info_log: %p", info_log.get());
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Warn(log, " Options.max_open_files: %d", max_open_files);
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Warn(log, " Options.max_total_wal_size: %" PRIu64, max_total_wal_size);
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Warn(log, " Options.disableDataSync: %d", disableDataSync);
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Warn(log, " Options.use_fsync: %d", use_fsync);
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Warn(log, " Options.max_log_file_size: %" ROCKSDB_PRIszt,
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max_log_file_size);
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Warn(log, "Options.max_manifest_file_size: %" PRIu64,
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max_manifest_file_size);
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Warn(log, " Options.log_file_time_to_roll: %" ROCKSDB_PRIszt,
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log_file_time_to_roll);
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Warn(log, " Options.keep_log_file_num: %" ROCKSDB_PRIszt,
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keep_log_file_num);
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Warn(log, " Options.allow_os_buffer: %d", allow_os_buffer);
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Warn(log, " Options.allow_mmap_reads: %d", allow_mmap_reads);
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Warn(log, " Options.allow_mmap_writes: %d", allow_mmap_writes);
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Warn(log, " Options.create_missing_column_families: %d",
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create_missing_column_families);
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Warn(log, " Options.db_log_dir: %s",
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db_log_dir.c_str());
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Warn(log, " Options.wal_dir: %s",
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wal_dir.c_str());
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Warn(log, " Options.table_cache_numshardbits: %d",
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table_cache_numshardbits);
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Warn(log, " Options.delete_obsolete_files_period_micros: %" PRIu64,
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delete_obsolete_files_period_micros);
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Warn(log, " Options.max_background_compactions: %d",
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max_background_compactions);
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Warn(log, " Options.max_background_flushes: %d",
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max_background_flushes);
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Warn(log, " Options.WAL_ttl_seconds: %" PRIu64,
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WAL_ttl_seconds);
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Warn(log, " Options.WAL_size_limit_MB: %" PRIu64,
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WAL_size_limit_MB);
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Warn(log,
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" Options.manifest_preallocation_size: %" ROCKSDB_PRIszt,
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manifest_preallocation_size);
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Warn(log, " Options.allow_os_buffer: %d",
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allow_os_buffer);
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Warn(log, " Options.allow_mmap_reads: %d",
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allow_mmap_reads);
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Warn(log, " Options.allow_mmap_writes: %d",
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allow_mmap_writes);
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Warn(log, " Options.is_fd_close_on_exec: %d",
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is_fd_close_on_exec);
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Warn(log, " Options.stats_dump_period_sec: %u",
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stats_dump_period_sec);
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Warn(log, " Options.advise_random_on_open: %d",
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advise_random_on_open);
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Warn(log,
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" Options.db_write_buffer_size: %" ROCKSDB_PRIszt
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"d",
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db_write_buffer_size);
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Warn(log, " Options.access_hint_on_compaction_start: %s",
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access_hints[access_hint_on_compaction_start]);
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Warn(log, " Options.use_adaptive_mutex: %d",
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use_adaptive_mutex);
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Warn(log, " Options.rate_limiter: %p",
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rate_limiter.get());
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Warn(log, " Options.bytes_per_sync: %" PRIu64,
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bytes_per_sync);
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Warn(log, " Options.wal_bytes_per_sync: %" PRIu64,
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wal_bytes_per_sync);
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Warn(log, " Options.enable_thread_tracking: %d",
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enable_thread_tracking);
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if (row_cache) {
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Warn(log, " Options.row_cache: %" PRIu64,
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row_cache->GetCapacity());
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} else {
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Warn(log, " Options.row_cache: None");
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}
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} // DBOptions::Dump
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void ColumnFamilyOptions::Dump(Logger* log) const {
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Warn(log, " Options.comparator: %s", comparator->Name());
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Warn(log, " Options.merge_operator: %s",
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merge_operator ? merge_operator->Name() : "None");
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Warn(log, " Options.compaction_filter: %s",
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compaction_filter ? compaction_filter->Name() : "None");
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Warn(log, " Options.compaction_filter_factory: %s",
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compaction_filter_factory ? compaction_filter_factory->Name() : "None");
|
|
Warn(log, " Options.compaction_filter_factory_v2: %s",
|
|
compaction_filter_factory_v2 ? compaction_filter_factory_v2->Name()
|
|
: "None");
|
|
Warn(log, " Options.memtable_factory: %s", memtable_factory->Name());
|
|
Warn(log, " Options.table_factory: %s", table_factory->Name());
|
|
Warn(log, " table_factory options: %s",
|
|
table_factory->GetPrintableTableOptions().c_str());
|
|
Warn(log, " Options.write_buffer_size: %" ROCKSDB_PRIszt,
|
|
write_buffer_size);
|
|
Warn(log, " Options.max_write_buffer_number: %d", max_write_buffer_number);
|
|
if (!compression_per_level.empty()) {
|
|
for (unsigned int i = 0; i < compression_per_level.size(); i++) {
|
|
Warn(log, " Options.compression[%d]: %s", i,
|
|
CompressionTypeToString(compression_per_level[i]).c_str());
|
|
}
|
|
} else {
|
|
Warn(log, " Options.compression: %s",
|
|
CompressionTypeToString(compression).c_str());
|
|
}
|
|
Warn(log, " Options.prefix_extractor: %s",
|
|
prefix_extractor == nullptr ? "nullptr" : prefix_extractor->Name());
|
|
Warn(log, " Options.num_levels: %d", num_levels);
|
|
Warn(log, " Options.min_write_buffer_number_to_merge: %d",
|
|
min_write_buffer_number_to_merge);
|
|
Warn(log, " Options.purge_redundant_kvs_while_flush: %d",
|
|
purge_redundant_kvs_while_flush);
|
|
Warn(log, " Options.max_write_buffer_number_to_maintain: %d",
|
|
max_write_buffer_number_to_maintain);
|
|
Warn(log, " Options.compression_opts.window_bits: %d",
|
|
compression_opts.window_bits);
|
|
Warn(log, " Options.compression_opts.level: %d",
|
|
compression_opts.level);
|
|
Warn(log, " Options.compression_opts.strategy: %d",
|
|
compression_opts.strategy);
|
|
Warn(log, " Options.level0_file_num_compaction_trigger: %d",
|
|
level0_file_num_compaction_trigger);
|
|
Warn(log, " Options.level0_slowdown_writes_trigger: %d",
|
|
level0_slowdown_writes_trigger);
|
|
Warn(log, " Options.level0_stop_writes_trigger: %d",
|
|
level0_stop_writes_trigger);
|
|
Warn(log, " Options.max_mem_compaction_level: %d",
|
|
max_mem_compaction_level);
|
|
Warn(log, " Options.target_file_size_base: %" PRIu64,
|
|
target_file_size_base);
|
|
Warn(log, " Options.target_file_size_multiplier: %d",
|
|
target_file_size_multiplier);
|
|
Warn(log, " Options.max_bytes_for_level_base: %" PRIu64,
|
|
max_bytes_for_level_base);
|
|
Warn(log, "Options.level_compaction_dynamic_level_bytes: %d",
|
|
level_compaction_dynamic_level_bytes);
|
|
Warn(log, " Options.max_bytes_for_level_multiplier: %d",
|
|
max_bytes_for_level_multiplier);
|
|
for (size_t i = 0; i < max_bytes_for_level_multiplier_additional.size();
|
|
i++) {
|
|
Warn(log, "Options.max_bytes_for_level_multiplier_addtl[%" ROCKSDB_PRIszt
|
|
"]: %d",
|
|
i, max_bytes_for_level_multiplier_additional[i]);
|
|
}
|
|
Warn(log, " Options.max_sequential_skip_in_iterations: %" PRIu64,
|
|
max_sequential_skip_in_iterations);
|
|
Warn(log, " Options.expanded_compaction_factor: %d",
|
|
expanded_compaction_factor);
|
|
Warn(log, " Options.source_compaction_factor: %d",
|
|
source_compaction_factor);
|
|
Warn(log, " Options.max_grandparent_overlap_factor: %d",
|
|
max_grandparent_overlap_factor);
|
|
|
|
Warn(log,
|
|
" Options.arena_block_size: %" ROCKSDB_PRIszt,
|
|
arena_block_size);
|
|
Warn(log, " Options.soft_rate_limit: %.2f",
|
|
soft_rate_limit);
|
|
Warn(log, " Options.hard_rate_limit: %.2f",
|
|
hard_rate_limit);
|
|
Warn(log, " Options.rate_limit_delay_max_milliseconds: %u",
|
|
rate_limit_delay_max_milliseconds);
|
|
Warn(log, " Options.disable_auto_compactions: %d",
|
|
disable_auto_compactions);
|
|
Warn(log, " Options.purge_redundant_kvs_while_flush: %d",
|
|
purge_redundant_kvs_while_flush);
|
|
Warn(log, " Options.filter_deletes: %d",
|
|
filter_deletes);
|
|
Warn(log, " Options.verify_checksums_in_compaction: %d",
|
|
verify_checksums_in_compaction);
|
|
Warn(log, " Options.compaction_style: %d",
|
|
compaction_style);
|
|
Warn(log, " Options.compaction_options_universal.size_ratio: %u",
|
|
compaction_options_universal.size_ratio);
|
|
Warn(log, "Options.compaction_options_universal.min_merge_width: %u",
|
|
compaction_options_universal.min_merge_width);
|
|
Warn(log, "Options.compaction_options_universal.max_merge_width: %u",
|
|
compaction_options_universal.max_merge_width);
|
|
Warn(log, "Options.compaction_options_universal."
|
|
"max_size_amplification_percent: %u",
|
|
compaction_options_universal.max_size_amplification_percent);
|
|
Warn(log,
|
|
"Options.compaction_options_universal.compression_size_percent: %d",
|
|
compaction_options_universal.compression_size_percent);
|
|
Warn(log, "Options.compaction_options_fifo.max_table_files_size: %" PRIu64,
|
|
compaction_options_fifo.max_table_files_size);
|
|
std::string collector_names;
|
|
for (const auto& collector_factory : table_properties_collector_factories) {
|
|
collector_names.append(collector_factory->Name());
|
|
collector_names.append("; ");
|
|
}
|
|
Warn(log, " Options.table_properties_collectors: %s",
|
|
collector_names.c_str());
|
|
Warn(log, " Options.inplace_update_support: %d",
|
|
inplace_update_support);
|
|
Warn(log,
|
|
" Options.inplace_update_num_locks: %" ROCKSDB_PRIszt,
|
|
inplace_update_num_locks);
|
|
Warn(log, " Options.min_partial_merge_operands: %u",
|
|
min_partial_merge_operands);
|
|
// TODO: easier config for bloom (maybe based on avg key/value size)
|
|
Warn(log, " Options.memtable_prefix_bloom_bits: %d",
|
|
memtable_prefix_bloom_bits);
|
|
Warn(log, " Options.memtable_prefix_bloom_probes: %d",
|
|
memtable_prefix_bloom_probes);
|
|
|
|
Warn(log,
|
|
" Options.memtable_prefix_bloom_huge_page_tlb_size: %" ROCKSDB_PRIszt,
|
|
memtable_prefix_bloom_huge_page_tlb_size);
|
|
Warn(log, " Options.bloom_locality: %d",
|
|
bloom_locality);
|
|
|
|
Warn(log,
|
|
" Options.max_successive_merges: %" ROCKSDB_PRIszt,
|
|
max_successive_merges);
|
|
Warn(log, " Options.optimize_fllters_for_hits: %d",
|
|
optimize_filters_for_hits);
|
|
} // ColumnFamilyOptions::Dump
|
|
|
|
void Options::Dump(Logger* log) const {
|
|
DBOptions::Dump(log);
|
|
ColumnFamilyOptions::Dump(log);
|
|
} // Options::Dump
|
|
|
|
void Options::DumpCFOptions(Logger* log) const {
|
|
ColumnFamilyOptions::Dump(log);
|
|
} // Options::DumpCFOptions
|
|
|
|
//
|
|
// The goal of this method is to create a configuration that
|
|
// allows an application to write all files into L0 and
|
|
// then do a single compaction to output all files into L1.
|
|
Options*
|
|
Options::PrepareForBulkLoad()
|
|
{
|
|
// never slowdown ingest.
|
|
level0_file_num_compaction_trigger = (1<<30);
|
|
level0_slowdown_writes_trigger = (1<<30);
|
|
level0_stop_writes_trigger = (1<<30);
|
|
|
|
// no auto compactions please. The application should issue a
|
|
// manual compaction after all data is loaded into L0.
|
|
disable_auto_compactions = true;
|
|
disableDataSync = true;
|
|
|
|
// A manual compaction run should pick all files in L0 in
|
|
// a single compaction run.
|
|
source_compaction_factor = (1<<30);
|
|
|
|
// It is better to have only 2 levels, otherwise a manual
|
|
// compaction would compact at every possible level, thereby
|
|
// increasing the total time needed for compactions.
|
|
num_levels = 2;
|
|
|
|
// Need to allow more write buffers to allow more parallism
|
|
// of flushes.
|
|
max_write_buffer_number = 6;
|
|
min_write_buffer_number_to_merge = 1;
|
|
|
|
// When compaction is disabled, more parallel flush threads can
|
|
// help with write throughput.
|
|
max_background_flushes = 4;
|
|
|
|
// Prevent a memtable flush to automatically promote files
|
|
// to L1. This is helpful so that all files that are
|
|
// input to the manual compaction are all at L0.
|
|
max_background_compactions = 2;
|
|
|
|
// The compaction would create large files in L1.
|
|
target_file_size_base = 256 * 1024 * 1024;
|
|
return this;
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
// Optimization functions
|
|
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeForPointLookup(
|
|
uint64_t block_cache_size_mb) {
|
|
prefix_extractor.reset(NewNoopTransform());
|
|
BlockBasedTableOptions block_based_options;
|
|
block_based_options.index_type = BlockBasedTableOptions::kHashSearch;
|
|
block_based_options.filter_policy.reset(NewBloomFilterPolicy(10));
|
|
block_based_options.block_cache =
|
|
NewLRUCache(static_cast<size_t>(block_cache_size_mb * 1024 * 1024));
|
|
table_factory.reset(new BlockBasedTableFactory(block_based_options));
|
|
memtable_factory.reset(NewHashLinkListRepFactory());
|
|
return this;
|
|
}
|
|
|
|
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeLevelStyleCompaction(
|
|
uint64_t memtable_memory_budget) {
|
|
write_buffer_size = static_cast<size_t>(memtable_memory_budget / 4);
|
|
// merge two memtables when flushing to L0
|
|
min_write_buffer_number_to_merge = 2;
|
|
// this means we'll use 50% extra memory in the worst case, but will reduce
|
|
// write stalls.
|
|
max_write_buffer_number = 6;
|
|
// start flushing L0->L1 as soon as possible. each file on level0 is
|
|
// (memtable_memory_budget / 2). This will flush level 0 when it's bigger than
|
|
// memtable_memory_budget.
|
|
level0_file_num_compaction_trigger = 2;
|
|
// doesn't really matter much, but we don't want to create too many files
|
|
target_file_size_base = memtable_memory_budget / 8;
|
|
// make Level1 size equal to Level0 size, so that L0->L1 compactions are fast
|
|
max_bytes_for_level_base = memtable_memory_budget;
|
|
|
|
// level style compaction
|
|
compaction_style = kCompactionStyleLevel;
|
|
|
|
// only compress levels >= 2
|
|
compression_per_level.resize(num_levels);
|
|
for (int i = 0; i < num_levels; ++i) {
|
|
if (i < 2) {
|
|
compression_per_level[i] = kNoCompression;
|
|
} else {
|
|
compression_per_level[i] = kSnappyCompression;
|
|
}
|
|
}
|
|
return this;
|
|
}
|
|
|
|
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeUniversalStyleCompaction(
|
|
uint64_t memtable_memory_budget) {
|
|
write_buffer_size = static_cast<size_t>(memtable_memory_budget / 4);
|
|
// merge two memtables when flushing to L0
|
|
min_write_buffer_number_to_merge = 2;
|
|
// this means we'll use 50% extra memory in the worst case, but will reduce
|
|
// write stalls.
|
|
max_write_buffer_number = 6;
|
|
// universal style compaction
|
|
compaction_style = kCompactionStyleUniversal;
|
|
compaction_options_universal.compression_size_percent = 80;
|
|
return this;
|
|
}
|
|
|
|
DBOptions* DBOptions::IncreaseParallelism(int total_threads) {
|
|
max_background_compactions = total_threads - 1;
|
|
max_background_flushes = 1;
|
|
env->SetBackgroundThreads(total_threads, Env::LOW);
|
|
env->SetBackgroundThreads(1, Env::HIGH);
|
|
return this;
|
|
}
|
|
|
|
#endif // !ROCKSDB_LITE
|
|
|
|
ReadOptions::ReadOptions()
|
|
: verify_checksums(true),
|
|
fill_cache(true),
|
|
snapshot(nullptr),
|
|
iterate_upper_bound(nullptr),
|
|
read_tier(kReadAllTier),
|
|
tailing(false),
|
|
managed(false),
|
|
total_order_seek(false) {
|
|
XFUNC_TEST("", "managed_options", managed_options, xf_manage_options,
|
|
reinterpret_cast<ReadOptions*>(this));
|
|
}
|
|
|
|
ReadOptions::ReadOptions(bool cksum, bool cache)
|
|
: verify_checksums(cksum),
|
|
fill_cache(cache),
|
|
snapshot(nullptr),
|
|
iterate_upper_bound(nullptr),
|
|
read_tier(kReadAllTier),
|
|
tailing(false),
|
|
managed(false),
|
|
total_order_seek(false) {
|
|
XFUNC_TEST("", "managed_options", managed_options, xf_manage_options,
|
|
reinterpret_cast<ReadOptions*>(this));
|
|
}
|
|
|
|
} // namespace rocksdb
|
|
|