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rocksdb/monitoring/perf_context.cc
Zhongyi Xie d6ec288703 Add PerfContextByLevel to provide per level perf context information (#4226) 
Summary:
Current implementation of perf context is level agnostic. Making it hard to do performance evaluation for the LSM tree. This PR adds `PerfContextByLevel` to decompose the counters by level.
This will be helpful when analyzing point and range query performance as well as tuning bloom filter
Also replaced __thread with thread_local keyword for perf_context
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4226

Differential Revision: D10369509

Pulled By: miasantreble

fbshipit-source-id: f1ced4e0de5fcebdb7f9cff36164516bc6382d82
2018-10-17 11:19:40 -07:00

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8.1 KiB
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
#include <sstream>
#include "monitoring/perf_context_imp.h"
namespace rocksdb {
#if defined(NPERF_CONTEXT) || !defined(ROCKSDB_SUPPORT_THREAD_LOCAL)
PerfContext perf_context;
#else
#if defined(OS_SOLARIS)
__thread PerfContext perf_context_;
#else
thread_local PerfContext perf_context;
#endif
#endif
PerfContext* get_perf_context() {
#if defined(NPERF_CONTEXT) || !defined(ROCKSDB_SUPPORT_THREAD_LOCAL)
return &perf_context;
#else
#if defined(OS_SOLARIS)
return &perf_context_;
#else
return &perf_context;
#endif
#endif
}
PerfContext::~PerfContext() {
#if !defined(NPERF_CONTEXT) && defined(ROCKSDB_SUPPORT_THREAD_LOCAL) && !defined(OS_SOLARIS)
ClearPerLevelPerfContext();
#endif
}
void PerfContext::Reset() {
#ifndef NPERF_CONTEXT
user_key_comparison_count = 0;
block_cache_hit_count = 0;
block_read_count = 0;
block_read_byte = 0;
block_read_time = 0;
block_checksum_time = 0;
block_decompress_time = 0;
get_read_bytes = 0;
multiget_read_bytes = 0;
iter_read_bytes = 0;
internal_key_skipped_count = 0;
internal_delete_skipped_count = 0;
internal_recent_skipped_count = 0;
internal_merge_count = 0;
write_wal_time = 0;
get_snapshot_time = 0;
get_from_memtable_time = 0;
get_from_memtable_count = 0;
get_post_process_time = 0;
get_from_output_files_time = 0;
seek_on_memtable_time = 0;
seek_on_memtable_count = 0;
next_on_memtable_count = 0;
prev_on_memtable_count = 0;
seek_child_seek_time = 0;
seek_child_seek_count = 0;
seek_min_heap_time = 0;
seek_internal_seek_time = 0;
find_next_user_entry_time = 0;
write_pre_and_post_process_time = 0;
write_memtable_time = 0;
write_delay_time = 0;
write_thread_wait_nanos = 0;
write_scheduling_flushes_compactions_time = 0;
db_mutex_lock_nanos = 0;
db_condition_wait_nanos = 0;
merge_operator_time_nanos = 0;
read_index_block_nanos = 0;
read_filter_block_nanos = 0;
new_table_block_iter_nanos = 0;
new_table_iterator_nanos = 0;
block_seek_nanos = 0;
find_table_nanos = 0;
bloom_memtable_hit_count = 0;
bloom_memtable_miss_count = 0;
bloom_sst_hit_count = 0;
bloom_sst_miss_count = 0;
key_lock_wait_time = 0;
key_lock_wait_count = 0;
env_new_sequential_file_nanos = 0;
env_new_random_access_file_nanos = 0;
env_new_writable_file_nanos = 0;
env_reuse_writable_file_nanos = 0;
env_new_random_rw_file_nanos = 0;
env_new_directory_nanos = 0;
env_file_exists_nanos = 0;
env_get_children_nanos = 0;
env_get_children_file_attributes_nanos = 0;
env_delete_file_nanos = 0;
env_create_dir_nanos = 0;
env_create_dir_if_missing_nanos = 0;
env_delete_dir_nanos = 0;
env_get_file_size_nanos = 0;
env_get_file_modification_time_nanos = 0;
env_rename_file_nanos = 0;
env_link_file_nanos = 0;
env_lock_file_nanos = 0;
env_unlock_file_nanos = 0;
env_new_logger_nanos = 0;
if (per_level_perf_context_enabled && level_to_perf_context) {
for (auto& kv : *level_to_perf_context) {
kv.second.Reset();
}
}
#endif
}
#define PERF_CONTEXT_OUTPUT(counter) \
if (!exclude_zero_counters || (counter > 0)) { \
ss << #counter << " = " << counter << ", "; \
}
#define PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER(counter) \
if (per_level_perf_context_enabled && \
level_to_perf_context) { \
ss << #counter << " = "; \
for (auto& kv : *level_to_perf_context) { \
if (!exclude_zero_counters || (kv.second.counter > 0)) { \
ss << kv.second.counter << "@level" << kv.first << ", "; \
} \
} \
}
void PerfContextByLevel::Reset() {
#ifndef NPERF_CONTEXT
bloom_filter_useful = 0;
bloom_filter_full_positive = 0;
bloom_filter_full_true_positive = 0;
#endif
}
std::string PerfContext::ToString(bool exclude_zero_counters) const {
#ifdef NPERF_CONTEXT
return "";
#else
std::ostringstream ss;
PERF_CONTEXT_OUTPUT(user_key_comparison_count);
PERF_CONTEXT_OUTPUT(block_cache_hit_count);
PERF_CONTEXT_OUTPUT(block_read_count);
PERF_CONTEXT_OUTPUT(block_read_byte);
PERF_CONTEXT_OUTPUT(block_read_time);
PERF_CONTEXT_OUTPUT(block_checksum_time);
PERF_CONTEXT_OUTPUT(block_decompress_time);
PERF_CONTEXT_OUTPUT(get_read_bytes);
PERF_CONTEXT_OUTPUT(multiget_read_bytes);
PERF_CONTEXT_OUTPUT(iter_read_bytes);
PERF_CONTEXT_OUTPUT(internal_key_skipped_count);
PERF_CONTEXT_OUTPUT(internal_delete_skipped_count);
PERF_CONTEXT_OUTPUT(internal_recent_skipped_count);
PERF_CONTEXT_OUTPUT(internal_merge_count);
PERF_CONTEXT_OUTPUT(write_wal_time);
PERF_CONTEXT_OUTPUT(get_snapshot_time);
PERF_CONTEXT_OUTPUT(get_from_memtable_time);
PERF_CONTEXT_OUTPUT(get_from_memtable_count);
PERF_CONTEXT_OUTPUT(get_post_process_time);
PERF_CONTEXT_OUTPUT(get_from_output_files_time);
PERF_CONTEXT_OUTPUT(seek_on_memtable_time);
PERF_CONTEXT_OUTPUT(seek_on_memtable_count);
PERF_CONTEXT_OUTPUT(next_on_memtable_count);
PERF_CONTEXT_OUTPUT(prev_on_memtable_count);
PERF_CONTEXT_OUTPUT(seek_child_seek_time);
PERF_CONTEXT_OUTPUT(seek_child_seek_count);
PERF_CONTEXT_OUTPUT(seek_min_heap_time);
PERF_CONTEXT_OUTPUT(seek_internal_seek_time);
PERF_CONTEXT_OUTPUT(find_next_user_entry_time);
PERF_CONTEXT_OUTPUT(write_pre_and_post_process_time);
PERF_CONTEXT_OUTPUT(write_memtable_time);
PERF_CONTEXT_OUTPUT(write_thread_wait_nanos);
PERF_CONTEXT_OUTPUT(write_scheduling_flushes_compactions_time);
PERF_CONTEXT_OUTPUT(db_mutex_lock_nanos);
PERF_CONTEXT_OUTPUT(db_condition_wait_nanos);
PERF_CONTEXT_OUTPUT(merge_operator_time_nanos);
PERF_CONTEXT_OUTPUT(write_delay_time);
PERF_CONTEXT_OUTPUT(read_index_block_nanos);
PERF_CONTEXT_OUTPUT(read_filter_block_nanos);
PERF_CONTEXT_OUTPUT(new_table_block_iter_nanos);
PERF_CONTEXT_OUTPUT(new_table_iterator_nanos);
PERF_CONTEXT_OUTPUT(block_seek_nanos);
PERF_CONTEXT_OUTPUT(find_table_nanos);
PERF_CONTEXT_OUTPUT(bloom_memtable_hit_count);
PERF_CONTEXT_OUTPUT(bloom_memtable_miss_count);
PERF_CONTEXT_OUTPUT(bloom_sst_hit_count);
PERF_CONTEXT_OUTPUT(bloom_sst_miss_count);
PERF_CONTEXT_OUTPUT(key_lock_wait_time);
PERF_CONTEXT_OUTPUT(key_lock_wait_count);
PERF_CONTEXT_OUTPUT(env_new_sequential_file_nanos);
PERF_CONTEXT_OUTPUT(env_new_random_access_file_nanos);
PERF_CONTEXT_OUTPUT(env_new_writable_file_nanos);
PERF_CONTEXT_OUTPUT(env_reuse_writable_file_nanos);
PERF_CONTEXT_OUTPUT(env_new_random_rw_file_nanos);
PERF_CONTEXT_OUTPUT(env_new_directory_nanos);
PERF_CONTEXT_OUTPUT(env_file_exists_nanos);
PERF_CONTEXT_OUTPUT(env_get_children_nanos);
PERF_CONTEXT_OUTPUT(env_get_children_file_attributes_nanos);
PERF_CONTEXT_OUTPUT(env_delete_file_nanos);
PERF_CONTEXT_OUTPUT(env_create_dir_nanos);
PERF_CONTEXT_OUTPUT(env_create_dir_if_missing_nanos);
PERF_CONTEXT_OUTPUT(env_delete_dir_nanos);
PERF_CONTEXT_OUTPUT(env_get_file_size_nanos);
PERF_CONTEXT_OUTPUT(env_get_file_modification_time_nanos);
PERF_CONTEXT_OUTPUT(env_rename_file_nanos);
PERF_CONTEXT_OUTPUT(env_link_file_nanos);
PERF_CONTEXT_OUTPUT(env_lock_file_nanos);
PERF_CONTEXT_OUTPUT(env_unlock_file_nanos);
PERF_CONTEXT_OUTPUT(env_new_logger_nanos);
PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER(bloom_filter_useful);
PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER(bloom_filter_full_positive);
PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER(bloom_filter_full_true_positive);
return ss.str();
#endif
}
void PerfContext::EnablePerLevelPerfContext() {
if (!level_to_perf_context) {
level_to_perf_context = new std::map<uint32_t, PerfContextByLevel>();
}
per_level_perf_context_enabled = true;
}
void PerfContext::DisablePerLevelPerfContext(){
per_level_perf_context_enabled = false;
}
void PerfContext::ClearPerLevelPerfContext(){
if (level_to_perf_context) {
delete level_to_perf_context;
level_to_perf_context = nullptr;
}
per_level_perf_context_enabled = false;
}
}
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