blob: 77a59643a1ce12d81ec0c412e18f9e9f72079bae [file] [log] [blame]
// 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).
#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;
// Get Thread-local IOStatsContext object pointer
IOStatsContext* get_iostats_context();
} // namespace rocksdb