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314 lines
12 KiB
314 lines
12 KiB
1 year ago
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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#include <sstream>
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#include "monitoring/perf_context_imp.h"
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namespace ROCKSDB_NAMESPACE {
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/*
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* Please add new metrics to this macro and appropriate fields will be copied,
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* and/or emitted when converted to string.
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* When people need to add new metrics please add the metric to the macro below
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* and enclose the name of the specific metric within defCmd().
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* The position of the field will be dictated by the
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* order in which the macros are enumerated and the offsets of the fields will
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* be matched against ''PerfContextByLevelBase'' declared in perf_context.h.
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*/
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// clang-format off
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#define DEF_PERF_CONTEXT_LEVEL_METRICS(defCmd) \
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defCmd(bloom_filter_useful) \
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defCmd(bloom_filter_full_positive) \
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defCmd(bloom_filter_full_true_positive) \
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defCmd(user_key_return_count) \
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defCmd(get_from_table_nanos) \
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defCmd(block_cache_hit_count) \
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defCmd(block_cache_miss_count)
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// clang-format on
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// Break down performance counters by level and store per-level perf context in
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// PerfContextByLevel
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struct PerfContextByLevelInt {
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#define EMIT_FIELDS(x) uint64_t x = 0;
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DEF_PERF_CONTEXT_LEVEL_METRICS(EMIT_FIELDS)
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#undef EMIT_FIELDS
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};
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/*
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* Please add new metrics to this macro and appropriate fields will be copied,
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* and/or emitted when converted to string.
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* When people need to add new metrics please enclose the name of the specific
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* metric within defCmd(). The position of the field will be dictated by the
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* order in which the macros are enumerated and the offsets of the fields will
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* be matched against ''PerfContextBase'' declared in perf_context.h.
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*/
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// clang-format off
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#define DEF_PERF_CONTEXT_METRICS(defCmd) \
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defCmd(user_key_comparison_count) \
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defCmd(block_cache_hit_count) \
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defCmd(block_read_count) \
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defCmd(block_read_byte) \
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defCmd(block_read_time) \
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defCmd(block_read_cpu_time) \
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defCmd(block_cache_index_hit_count) \
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defCmd(block_cache_standalone_handle_count) \
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defCmd(block_cache_real_handle_count) \
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defCmd(index_block_read_count) \
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defCmd(block_cache_filter_hit_count) \
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defCmd(filter_block_read_count) \
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defCmd(compression_dict_block_read_count) \
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defCmd(secondary_cache_hit_count) \
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defCmd(compressed_sec_cache_insert_real_count) \
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defCmd(compressed_sec_cache_insert_dummy_count) \
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defCmd(compressed_sec_cache_uncompressed_bytes) \
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defCmd(compressed_sec_cache_compressed_bytes) \
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defCmd(block_checksum_time) \
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defCmd(block_decompress_time) \
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defCmd(get_read_bytes) \
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defCmd(multiget_read_bytes) \
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defCmd(iter_read_bytes) \
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defCmd(blob_cache_hit_count) \
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defCmd(blob_read_count) \
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defCmd(blob_read_byte) \
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defCmd(blob_read_time) \
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defCmd(blob_checksum_time) \
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defCmd(blob_decompress_time) \
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defCmd(internal_key_skipped_count) \
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defCmd(internal_delete_skipped_count) \
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defCmd(internal_recent_skipped_count) \
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defCmd(internal_merge_count) \
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defCmd(internal_merge_point_lookup_count) \
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defCmd(internal_range_del_reseek_count) \
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defCmd(get_snapshot_time) \
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defCmd(get_from_memtable_time) \
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defCmd(get_from_memtable_count) \
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defCmd(get_post_process_time) \
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defCmd(get_from_output_files_time) \
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defCmd(seek_on_memtable_time) \
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defCmd(seek_on_memtable_count) \
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defCmd(next_on_memtable_count) \
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defCmd(prev_on_memtable_count) \
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defCmd(seek_child_seek_time) \
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defCmd(seek_child_seek_count) \
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defCmd(seek_min_heap_time) \
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defCmd(seek_max_heap_time) \
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defCmd(seek_internal_seek_time) \
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defCmd(find_next_user_entry_time) \
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defCmd(write_wal_time) \
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defCmd(write_memtable_time) \
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defCmd(write_delay_time) \
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defCmd(write_scheduling_flushes_compactions_time)\
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defCmd(write_pre_and_post_process_time) \
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defCmd(write_thread_wait_nanos) \
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defCmd(db_mutex_lock_nanos) \
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defCmd(db_condition_wait_nanos) \
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defCmd(merge_operator_time_nanos) \
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defCmd(read_index_block_nanos) \
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defCmd(read_filter_block_nanos) \
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defCmd(new_table_block_iter_nanos) \
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defCmd(new_table_iterator_nanos) \
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defCmd(block_seek_nanos) \
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defCmd(find_table_nanos) \
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defCmd(bloom_memtable_hit_count) \
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defCmd(bloom_memtable_miss_count) \
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defCmd(bloom_sst_hit_count) \
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defCmd(bloom_sst_miss_count) \
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defCmd(key_lock_wait_time) \
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defCmd(key_lock_wait_count) \
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defCmd(env_new_sequential_file_nanos) \
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defCmd(env_new_random_access_file_nanos) \
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defCmd(env_new_writable_file_nanos) \
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defCmd(env_reuse_writable_file_nanos) \
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defCmd(env_new_random_rw_file_nanos) \
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defCmd(env_new_directory_nanos) \
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defCmd(env_file_exists_nanos) \
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defCmd(env_get_children_nanos) \
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defCmd(env_get_children_file_attributes_nanos) \
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defCmd(env_delete_file_nanos) \
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defCmd(env_create_dir_nanos) \
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defCmd(env_create_dir_if_missing_nanos) \
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defCmd(env_delete_dir_nanos) \
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defCmd(env_get_file_size_nanos) \
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defCmd(env_get_file_modification_time_nanos) \
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defCmd(env_rename_file_nanos) \
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defCmd(env_link_file_nanos) \
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defCmd(env_lock_file_nanos) \
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defCmd(env_unlock_file_nanos) \
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defCmd(env_new_logger_nanos) \
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defCmd(get_cpu_nanos) \
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defCmd(iter_next_cpu_nanos) \
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defCmd(iter_prev_cpu_nanos) \
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defCmd(iter_seek_cpu_nanos) \
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defCmd(iter_next_count) \
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defCmd(iter_prev_count) \
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defCmd(iter_seek_count) \
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defCmd(encrypt_data_nanos) \
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defCmd(decrypt_data_nanos) \
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defCmd(number_async_seek)
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// clang-format on
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struct PerfContextInt {
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#define EMIT_FIELDS(x) uint64_t x;
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DEF_PERF_CONTEXT_METRICS(EMIT_FIELDS)
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#undef EMIT_FIELDS
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};
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#if defined(NPERF_CONTEXT)
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// Should not be used because the counters are not thread-safe.
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// Put here just to make get_perf_context() simple without ifdef.
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PerfContext perf_context;
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#else
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thread_local PerfContext perf_context;
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#endif
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PerfContext* get_perf_context() {
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static_assert(sizeof(PerfContextBase) == sizeof(PerfContextInt));
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static_assert(sizeof(PerfContextByLevelBase) ==
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sizeof(PerfContextByLevelInt));
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/*
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* Validate that we have the same fields and offsets between the external user
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* facing
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* ''PerfContextBase'' and ''PerfContextByLevelBase' structures with the
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* internal structures that we generate from the DEF_* macros above. This way
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* if people add metrics to the user-facing header file, they will have a
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* build failure and need to add similar fields to the macros in this file.
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* These are compile-time validations and don't impose any run-time penalties.
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*/
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#define EMIT_OFFSET_ASSERTION(x) \
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static_assert(offsetof(PerfContextBase, x) == offsetof(PerfContextInt, x));
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DEF_PERF_CONTEXT_METRICS(EMIT_OFFSET_ASSERTION)
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#undef EMIT_OFFSET_ASSERTION
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#define EMIT_OFFSET_ASSERTION(x) \
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static_assert(offsetof(PerfContextByLevelBase, x) == \
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offsetof(PerfContextByLevelInt, x));
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DEF_PERF_CONTEXT_LEVEL_METRICS(EMIT_OFFSET_ASSERTION)
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#undef EMIT_OFFSET_ASSERTION
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return &perf_context;
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}
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PerfContext::~PerfContext() {
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#if !defined(NPERF_CONTEXT) && !defined(OS_SOLARIS)
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ClearPerLevelPerfContext();
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#endif
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}
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PerfContext::PerfContext(const PerfContext& other) {
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#ifdef NPERF_CONTEXT
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(void)other;
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#else
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copyMetrics(&other);
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#endif
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}
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PerfContext::PerfContext(PerfContext&& other) noexcept {
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#ifdef NPERF_CONTEXT
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(void)other;
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#else
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copyMetrics(&other);
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#endif
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}
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PerfContext& PerfContext::operator=(const PerfContext& other) {
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#ifdef NPERF_CONTEXT
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(void)other;
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#else
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copyMetrics(&other);
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#endif
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return *this;
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}
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void PerfContext::copyMetrics(const PerfContext* other) noexcept {
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#ifdef NPERF_CONTEXT
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(void)other;
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#else
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#define EMIT_COPY_FIELDS(x) x = other->x;
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DEF_PERF_CONTEXT_METRICS(EMIT_COPY_FIELDS)
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#undef EMIT_COPY_FIELDS
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if (per_level_perf_context_enabled && level_to_perf_context != nullptr) {
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ClearPerLevelPerfContext();
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}
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if (other->level_to_perf_context != nullptr) {
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level_to_perf_context = new std::map<uint32_t, PerfContextByLevel>();
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*level_to_perf_context = *other->level_to_perf_context;
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}
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per_level_perf_context_enabled = other->per_level_perf_context_enabled;
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#endif
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}
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void PerfContext::Reset() {
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#ifndef NPERF_CONTEXT
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#define EMIT_FIELDS(x) x = 0;
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DEF_PERF_CONTEXT_METRICS(EMIT_FIELDS)
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#undef EMIT_FIELDS
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if (per_level_perf_context_enabled && level_to_perf_context) {
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for (auto& kv : *level_to_perf_context) {
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kv.second.Reset();
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}
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}
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#endif
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}
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void PerfContextByLevel::Reset() {
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#ifndef NPERF_CONTEXT
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#define EMIT_FIELDS(x) x = 0;
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DEF_PERF_CONTEXT_LEVEL_METRICS(EMIT_FIELDS)
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#undef EMIT_FIELDS
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#endif
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}
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std::string PerfContext::ToString(bool exclude_zero_counters) const {
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#ifdef NPERF_CONTEXT
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(void)exclude_zero_counters;
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return "";
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#else
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std::ostringstream ss;
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#define PERF_CONTEXT_OUTPUT(counter) \
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if (!exclude_zero_counters || (counter > 0)) { \
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ss << #counter << " = " << counter << ", "; \
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}
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DEF_PERF_CONTEXT_METRICS(PERF_CONTEXT_OUTPUT)
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#undef PERF_CONTEXT_OUTPUT
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if (per_level_perf_context_enabled && level_to_perf_context) {
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#define PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER(counter) \
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ss << #counter << " = "; \
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for (auto& kv : *level_to_perf_context) { \
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if (!exclude_zero_counters || (kv.second.counter > 0)) { \
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ss << kv.second.counter << "@level" << kv.first << ", "; \
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} \
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}
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DEF_PERF_CONTEXT_LEVEL_METRICS(PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER)
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#undef PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER
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}
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std::string str = ss.str();
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str.erase(str.find_last_not_of(", ") + 1);
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return str;
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#endif
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}
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void PerfContext::EnablePerLevelPerfContext() {
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if (level_to_perf_context == nullptr) {
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level_to_perf_context = new std::map<uint32_t, PerfContextByLevel>();
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}
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per_level_perf_context_enabled = true;
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}
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void PerfContext::DisablePerLevelPerfContext() {
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per_level_perf_context_enabled = false;
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}
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void PerfContext::ClearPerLevelPerfContext() {
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if (level_to_perf_context != nullptr) {
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level_to_perf_context->clear();
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delete level_to_perf_context;
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level_to_perf_context = nullptr;
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}
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per_level_perf_context_enabled = false;
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}
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} // namespace ROCKSDB_NAMESPACE
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