2568985ab3
Summary: similar to D52809 add option to exclude zero counters. Test Plan: [yiwu@dev4504.prn1 ~/rocksdb] ./iostats_context_test [==========] Running 1 test from 1 test case. [----------] Global test environment set-up. [----------] 1 test from IOStatsContextTest [ RUN ] IOStatsContextTest.ToString [ OK ] IOStatsContextTest.ToString (0 ms) [----------] 1 test from IOStatsContextTest (0 ms total) [----------] Global test environment tear-down [==========] 1 test from 1 test case ran. (0 ms total) [ PASSED ] 1 test. Reviewers: anthony, yhchiang, andrewkr, IslamAbdelRahman, kradhakrishnan, sdong Reviewed By: sdong Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D54591
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// Copyright (c) 2011-present, 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.
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include <string>
|
|
|
|
#include "rocksdb/perf_level.h"
|
|
|
|
// A thread local context for gathering io-stats efficiently and transparently.
|
|
// Use SetPerfLevel(PerfLevel::kEnableTime) to enable time stats.
|
|
|
|
namespace rocksdb {
|
|
|
|
struct IOStatsContext {
|
|
// reset all io-stats counter to zero
|
|
void Reset();
|
|
|
|
std::string ToString(bool exclude_zero_counters = false) const;
|
|
|
|
// the thread pool id
|
|
uint64_t thread_pool_id;
|
|
|
|
// number of bytes that has been written.
|
|
uint64_t bytes_written;
|
|
// number of bytes that has been read.
|
|
uint64_t bytes_read;
|
|
|
|
// time spent in open() and fopen().
|
|
uint64_t open_nanos;
|
|
// time spent in fallocate().
|
|
uint64_t allocate_nanos;
|
|
// time spent in write() and pwrite().
|
|
uint64_t write_nanos;
|
|
// time spent in read() and pread()
|
|
uint64_t read_nanos;
|
|
// time spent in sync_file_range().
|
|
uint64_t range_sync_nanos;
|
|
// time spent in fsync
|
|
uint64_t fsync_nanos;
|
|
// time spent in preparing write (fallocate etc).
|
|
uint64_t prepare_write_nanos;
|
|
// time spent in Logger::Logv().
|
|
uint64_t logger_nanos;
|
|
};
|
|
|
|
#ifndef IOS_CROSS_COMPILE
|
|
# ifdef _WIN32
|
|
extern __declspec(thread) IOStatsContext iostats_context;
|
|
# else
|
|
extern __thread IOStatsContext iostats_context;
|
|
# endif
|
|
#endif // IOS_CROSS_COMPILE
|
|
|
|
} // namespace rocksdb
|