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rocksdb/util/statistics.cc

138 lines
3.8 KiB

// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#include "util/statistics.h"
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#include <inttypes.h>
#include "rocksdb/statistics.h"
#include "port/likely.h"
#include <algorithm>
#include <cstdio>
namespace rocksdb {
std::shared_ptr<Statistics> CreateDBStatistics() {
return std::make_shared<StatisticsImpl>(nullptr, false);
}
StatisticsImpl::StatisticsImpl(
std::shared_ptr<Statistics> stats,
bool enable_internal_stats)
: stats_shared_(stats),
stats_(stats.get()),
enable_internal_stats_(enable_internal_stats) {
}
StatisticsImpl::~StatisticsImpl() {}
uint64_t StatisticsImpl::getTickerCount(uint32_t tickerType) const {
assert(
enable_internal_stats_ ?
tickerType < INTERNAL_TICKER_ENUM_MAX :
tickerType < TICKER_ENUM_MAX);
// Return its own ticker version
convert Tickers back to array with padding and alignment Summary: Pad each Ticker structure to be 64 bytes and make them align on 64 bytes boundary to avoid cache line false sharing issue. Please refer to task 3615553 for more details Test Plan: db_bench LevelDB: version 2.0s Date: Wed Jan 29 12:23:17 2014 CPU: 32 * Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz CPUCache: 20480 KB rocksdb.build.overwrite.qps 49638 rocksdb.build.overwrite.p50_micros 58.73 rocksdb.build.overwrite.p75_micros 210.56 rocksdb.build.overwrite.p99_micros 733.28 rocksdb.build.fillseq.qps 366729 rocksdb.build.fillseq.p50_micros 1.00 rocksdb.build.fillseq.p75_micros 1.00 rocksdb.build.fillseq.p99_micros 2.65 rocksdb.build.readrandom.qps 1152995 rocksdb.build.readrandom.p50_micros 11.27 rocksdb.build.readrandom.p75_micros 15.69 rocksdb.build.readrandom.p99_micros 33.59 rocksdb.build.readrandom_smallblockcache.qps 956047 rocksdb.build.readrandom_smallblockcache.p50_micros 15.23 rocksdb.build.readrandom_smallblockcache.p75_micros 17.31 rocksdb.build.readrandom_smallblockcache.p99_micros 31.49 rocksdb.build.readrandom_memtable_sst.qps 1105183 rocksdb.build.readrandom_memtable_sst.p50_micros 12.04 rocksdb.build.readrandom_memtable_sst.p75_micros 15.78 rocksdb.build.readrandom_memtable_sst.p99_micros 32.49 rocksdb.build.readrandom_fillunique_random.qps 487856 rocksdb.build.readrandom_fillunique_random.p50_micros 29.65 rocksdb.build.readrandom_fillunique_random.p75_micros 40.93 rocksdb.build.readrandom_fillunique_random.p99_micros 78.68 rocksdb.build.memtablefillrandom.qps 91304 rocksdb.build.memtablefillrandom.p50_micros 171.05 rocksdb.build.memtablefillrandom.p75_micros 196.12 rocksdb.build.memtablefillrandom.p99_micros 291.73 rocksdb.build.memtablereadrandom.qps 1340411 rocksdb.build.memtablereadrandom.p50_micros 9.48 rocksdb.build.memtablereadrandom.p75_micros 13.95 rocksdb.build.memtablereadrandom.p99_micros 30.36 rocksdb.build.readwhilewriting.qps 491004 rocksdb.build.readwhilewriting.p50_micros 29.58 rocksdb.build.readwhilewriting.p75_micros 40.34 rocksdb.build.readwhilewriting.p99_micros 76.78 Reviewers: igor, haobo Reviewed By: igor CC: leveldb Differential Revision: https://reviews.facebook.net/D15573
11 years ago
return tickers_[tickerType].value;
}
void StatisticsImpl::histogramData(uint32_t histogramType,
HistogramData* const data) const {
assert(
enable_internal_stats_ ?
histogramType < INTERNAL_HISTOGRAM_ENUM_MAX :
histogramType < HISTOGRAM_ENUM_MAX);
// Return its own ticker version
histograms_[histogramType].Data(data);
}
void StatisticsImpl::setTickerCount(uint32_t tickerType, uint64_t count) {
assert(
enable_internal_stats_ ?
tickerType < INTERNAL_TICKER_ENUM_MAX :
tickerType < TICKER_ENUM_MAX);
if (tickerType < TICKER_ENUM_MAX || enable_internal_stats_) {
tickers_[tickerType].value = count;
}
if (stats_ && tickerType < TICKER_ENUM_MAX) {
stats_->setTickerCount(tickerType, count);
}
}
void StatisticsImpl::recordTick(uint32_t tickerType, uint64_t count) {
assert(
enable_internal_stats_ ?
tickerType < INTERNAL_TICKER_ENUM_MAX :
tickerType < TICKER_ENUM_MAX);
if (tickerType < TICKER_ENUM_MAX || enable_internal_stats_) {
tickers_[tickerType].value += count;
}
if (stats_ && tickerType < TICKER_ENUM_MAX) {
stats_->recordTick(tickerType, count);
}
}
void StatisticsImpl::measureTime(uint32_t histogramType, uint64_t value) {
assert(
enable_internal_stats_ ?
histogramType < INTERNAL_HISTOGRAM_ENUM_MAX :
histogramType < HISTOGRAM_ENUM_MAX);
if (histogramType < HISTOGRAM_ENUM_MAX || enable_internal_stats_) {
histograms_[histogramType].Add(value);
}
if (stats_ && histogramType < HISTOGRAM_ENUM_MAX) {
stats_->measureTime(histogramType, value);
}
}
namespace {
// a buffer size used for temp string buffers
const int kBufferSize = 200;
} // namespace
std::string StatisticsImpl::ToString() const {
std::string res;
res.reserve(20000);
for (const auto& t : TickersNameMap) {
if (t.first < TICKER_ENUM_MAX || enable_internal_stats_) {
char buffer[kBufferSize];
snprintf(buffer, kBufferSize, "%s COUNT : %" PRIu64 "\n",
t.second.c_str(), getTickerCount(t.first));
res.append(buffer);
}
}
for (const auto& h : HistogramsNameMap) {
if (h.first < HISTOGRAM_ENUM_MAX || enable_internal_stats_) {
char buffer[kBufferSize];
HistogramData hData;
histogramData(h.first, &hData);
snprintf(
buffer,
kBufferSize,
"%s statistics Percentiles :=> 50 : %f 95 : %f 99 : %f\n",
h.second.c_str(),
hData.median,
hData.percentile95,
hData.percentile99);
res.append(buffer);
}
}
res.shrink_to_fit();
return res;
}
bool StatisticsImpl::HistEnabledForType(uint32_t type) const {
if (LIKELY(!enable_internal_stats_)) {
return type < HISTOGRAM_ENUM_MAX;
}
return true;
}
} // namespace rocksdb