1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
|
// 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_NAMESPACE {
/*
* Please add new metrics to this macro and appropriate fields will be copied,
* and/or emitted when converted to string.
* When people need to add new metrics please add the metric to the macro below
* and enclose the name of the specific metric within defCmd().
* The position of the field will be dictated by the
* order in which the macros are enumerated and the offsets of the fields will
* be matched against ''PerfContextByLevelBase'' declared in perf_context.h.
*/
// clang-format off
#define DEF_PERF_CONTEXT_LEVEL_METRICS(defCmd) \
defCmd(bloom_filter_useful) \
defCmd(bloom_filter_full_positive) \
defCmd(bloom_filter_full_true_positive) \
defCmd(user_key_return_count) \
defCmd(get_from_table_nanos) \
defCmd(block_cache_hit_count) \
defCmd(block_cache_miss_count)
// clang-format on
// Break down performance counters by level and store per-level perf context in
// PerfContextByLevel
struct PerfContextByLevelInt {
#define EMIT_FIELDS(x) uint64_t x = 0;
DEF_PERF_CONTEXT_LEVEL_METRICS(EMIT_FIELDS)
#undef EMIT_FIELDS
};
/*
* Please add new metrics to this macro and appropriate fields will be copied,
* and/or emitted when converted to string.
* When people need to add new metrics please enclose the name of the specific
* metric within defCmd(). The position of the field will be dictated by the
* order in which the macros are enumerated and the offsets of the fields will
* be matched against ''PerfContextBase'' declared in perf_context.h.
*/
// clang-format off
#define DEF_PERF_CONTEXT_METRICS(defCmd) \
defCmd(user_key_comparison_count) \
defCmd(block_cache_hit_count) \
defCmd(block_read_count) \
defCmd(block_read_byte) \
defCmd(block_read_time) \
defCmd(block_read_cpu_time) \
defCmd(block_cache_index_hit_count) \
defCmd(block_cache_standalone_handle_count) \
defCmd(block_cache_real_handle_count) \
defCmd(index_block_read_count) \
defCmd(block_cache_filter_hit_count) \
defCmd(filter_block_read_count) \
defCmd(compression_dict_block_read_count) \
defCmd(block_cache_index_read_byte) \
defCmd(block_cache_filter_read_byte) \
defCmd(block_cache_compression_dict_read_byte) \
defCmd(block_cache_read_byte) \
defCmd(secondary_cache_hit_count) \
defCmd(compressed_sec_cache_insert_real_count) \
defCmd(compressed_sec_cache_insert_dummy_count) \
defCmd(compressed_sec_cache_uncompressed_bytes) \
defCmd(compressed_sec_cache_compressed_bytes) \
defCmd(block_checksum_time) \
defCmd(block_decompress_time) \
defCmd(get_read_bytes) \
defCmd(multiget_read_bytes) \
defCmd(iter_read_bytes) \
defCmd(blob_cache_hit_count) \
defCmd(blob_read_count) \
defCmd(blob_read_byte) \
defCmd(blob_read_time) \
defCmd(blob_checksum_time) \
defCmd(blob_decompress_time) \
defCmd(internal_key_skipped_count) \
defCmd(internal_delete_skipped_count) \
defCmd(internal_recent_skipped_count) \
defCmd(internal_merge_count) \
defCmd(internal_merge_point_lookup_count) \
defCmd(internal_range_del_reseek_count) \
defCmd(get_snapshot_time) \
defCmd(get_from_memtable_time) \
defCmd(get_from_memtable_count) \
defCmd(get_post_process_time) \
defCmd(get_from_output_files_time) \
defCmd(seek_on_memtable_time) \
defCmd(seek_on_memtable_count) \
defCmd(next_on_memtable_count) \
defCmd(prev_on_memtable_count) \
defCmd(seek_child_seek_time) \
defCmd(seek_child_seek_count) \
defCmd(seek_min_heap_time) \
defCmd(seek_max_heap_time) \
defCmd(seek_internal_seek_time) \
defCmd(find_next_user_entry_time) \
defCmd(write_wal_time) \
defCmd(write_memtable_time) \
defCmd(write_delay_time) \
defCmd(write_scheduling_flushes_compactions_time)\
defCmd(write_pre_and_post_process_time) \
defCmd(write_thread_wait_nanos) \
defCmd(db_mutex_lock_nanos) \
defCmd(db_condition_wait_nanos) \
defCmd(merge_operator_time_nanos) \
defCmd(read_index_block_nanos) \
defCmd(read_filter_block_nanos) \
defCmd(new_table_block_iter_nanos) \
defCmd(new_table_iterator_nanos) \
defCmd(block_seek_nanos) \
defCmd(find_table_nanos) \
defCmd(bloom_memtable_hit_count) \
defCmd(bloom_memtable_miss_count) \
defCmd(bloom_sst_hit_count) \
defCmd(bloom_sst_miss_count) \
defCmd(key_lock_wait_time) \
defCmd(key_lock_wait_count) \
defCmd(env_new_sequential_file_nanos) \
defCmd(env_new_random_access_file_nanos) \
defCmd(env_new_writable_file_nanos) \
defCmd(env_reuse_writable_file_nanos) \
defCmd(env_new_random_rw_file_nanos) \
defCmd(env_new_directory_nanos) \
defCmd(env_file_exists_nanos) \
defCmd(env_get_children_nanos) \
defCmd(env_get_children_file_attributes_nanos) \
defCmd(env_delete_file_nanos) \
defCmd(env_create_dir_nanos) \
defCmd(env_create_dir_if_missing_nanos) \
defCmd(env_delete_dir_nanos) \
defCmd(env_get_file_size_nanos) \
defCmd(env_get_file_modification_time_nanos) \
defCmd(env_rename_file_nanos) \
defCmd(env_link_file_nanos) \
defCmd(env_lock_file_nanos) \
defCmd(env_unlock_file_nanos) \
defCmd(env_new_logger_nanos) \
defCmd(get_cpu_nanos) \
defCmd(iter_next_cpu_nanos) \
defCmd(iter_prev_cpu_nanos) \
defCmd(iter_seek_cpu_nanos) \
defCmd(iter_next_count) \
defCmd(iter_prev_count) \
defCmd(iter_seek_count) \
defCmd(encrypt_data_nanos) \
defCmd(decrypt_data_nanos) \
defCmd(number_async_seek)
// clang-format on
struct PerfContextInt {
#define EMIT_FIELDS(x) uint64_t x;
DEF_PERF_CONTEXT_METRICS(EMIT_FIELDS)
#undef EMIT_FIELDS
};
#if defined(NPERF_CONTEXT)
// Should not be used because the counters are not thread-safe.
// Put here just to make get_perf_context() simple without ifdef.
PerfContext perf_context;
#else
thread_local PerfContext perf_context;
#endif
PerfContext* get_perf_context() {
static_assert(sizeof(PerfContextBase) == sizeof(PerfContextInt));
static_assert(sizeof(PerfContextByLevelBase) ==
sizeof(PerfContextByLevelInt));
/*
* Validate that we have the same fields and offsets between the external user
* facing
* ''PerfContextBase'' and ''PerfContextByLevelBase' structures with the
* internal structures that we generate from the DEF_* macros above. This way
* if people add metrics to the user-facing header file, they will have a
* build failure and need to add similar fields to the macros in this file.
* These are compile-time validations and don't impose any run-time penalties.
*/
#define EMIT_OFFSET_ASSERTION(x) \
static_assert(offsetof(PerfContextBase, x) == offsetof(PerfContextInt, x));
DEF_PERF_CONTEXT_METRICS(EMIT_OFFSET_ASSERTION)
#undef EMIT_OFFSET_ASSERTION
#define EMIT_OFFSET_ASSERTION(x) \
static_assert(offsetof(PerfContextByLevelBase, x) == \
offsetof(PerfContextByLevelInt, x));
DEF_PERF_CONTEXT_LEVEL_METRICS(EMIT_OFFSET_ASSERTION)
#undef EMIT_OFFSET_ASSERTION
return &perf_context;
}
PerfContext::~PerfContext() {
#if !defined(NPERF_CONTEXT) && !defined(OS_SOLARIS)
ClearPerLevelPerfContext();
#endif
}
PerfContext::PerfContext(const PerfContext& other) {
#ifdef NPERF_CONTEXT
(void)other;
#else
copyMetrics(&other);
#endif
}
PerfContext::PerfContext(PerfContext&& other) noexcept {
#ifdef NPERF_CONTEXT
(void)other;
#else
copyMetrics(&other);
#endif
}
PerfContext& PerfContext::operator=(const PerfContext& other) {
#ifdef NPERF_CONTEXT
(void)other;
#else
copyMetrics(&other);
#endif
return *this;
}
void PerfContext::copyMetrics(const PerfContext* other) noexcept {
#ifdef NPERF_CONTEXT
(void)other;
#else
#define EMIT_COPY_FIELDS(x) x = other->x;
DEF_PERF_CONTEXT_METRICS(EMIT_COPY_FIELDS)
#undef EMIT_COPY_FIELDS
if (per_level_perf_context_enabled && level_to_perf_context != nullptr) {
ClearPerLevelPerfContext();
}
if (other->level_to_perf_context != nullptr) {
level_to_perf_context = new std::map<uint32_t, PerfContextByLevel>();
*level_to_perf_context = *other->level_to_perf_context;
}
per_level_perf_context_enabled = other->per_level_perf_context_enabled;
#endif
}
void PerfContext::Reset() {
#ifndef NPERF_CONTEXT
#define EMIT_FIELDS(x) x = 0;
DEF_PERF_CONTEXT_METRICS(EMIT_FIELDS)
#undef EMIT_FIELDS
if (per_level_perf_context_enabled && level_to_perf_context) {
for (auto& kv : *level_to_perf_context) {
kv.second.Reset();
}
}
#endif
}
void PerfContextByLevel::Reset() {
#ifndef NPERF_CONTEXT
#define EMIT_FIELDS(x) x = 0;
DEF_PERF_CONTEXT_LEVEL_METRICS(EMIT_FIELDS)
#undef EMIT_FIELDS
#endif
}
std::string PerfContext::ToString(bool exclude_zero_counters) const {
#ifdef NPERF_CONTEXT
(void)exclude_zero_counters;
return "";
#else
std::ostringstream ss;
#define PERF_CONTEXT_OUTPUT(counter) \
if (!exclude_zero_counters || (counter > 0)) { \
ss << #counter << " = " << counter << ", "; \
}
DEF_PERF_CONTEXT_METRICS(PERF_CONTEXT_OUTPUT)
#undef PERF_CONTEXT_OUTPUT
if (per_level_perf_context_enabled && level_to_perf_context) {
#define PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER(counter) \
ss << #counter << " = "; \
for (auto& kv : *level_to_perf_context) { \
if (!exclude_zero_counters || (kv.second.counter > 0)) { \
ss << kv.second.counter << "@level" << kv.first << ", "; \
} \
}
DEF_PERF_CONTEXT_LEVEL_METRICS(PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER)
#undef PERF_CONTEXT_BY_LEVEL_OUTPUT_ONE_COUNTER
}
std::string str = ss.str();
str.erase(str.find_last_not_of(", ") + 1);
return str;
#endif
}
void PerfContext::EnablePerLevelPerfContext() {
if (level_to_perf_context == nullptr) {
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 != nullptr) {
level_to_perf_context->clear();
delete level_to_perf_context;
level_to_perf_context = nullptr;
}
per_level_perf_context_enabled = false;
}
} // namespace ROCKSDB_NAMESPACE
|
