rocksdb/util/thread_operation.h

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// 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.
//
// This file defines the structures for thread operation and state.
// Thread operations are used to describe high level action of a
// thread such as doing compaction or flush, while thread state
// are used to describe lower-level action such as reading /
// writing a file or waiting for a mutex. Operations and states
// are designed to be independent. Typically, a thread usually involves
// in one operation and one state at any specific point in time.
#pragma once
#include "include/rocksdb/thread_status.h"
#include <string>
namespace rocksdb {
#if ROCKSDB_USING_THREAD_STATUS
// The structure that describes a major thread operation.
struct OperationInfo {
const ThreadStatus::OperationType type;
const std::string name;
};
// The global operation table.
//
// When updating a status of a thread, the pointer of the OperationInfo
// of the current ThreadStatusData will be pointing to one of the
// rows in this global table.
//
// Note that it's not designed to be constant as in the future we
// might consider adding global count to the OperationInfo.
static OperationInfo global_operation_table[] = {
{ThreadStatus::OP_UNKNOWN, ""},
{ThreadStatus::OP_COMPACTION, "Compaction"},
{ThreadStatus::OP_FLUSH, "Flush"}
};
Allow GetThreadList() to report operation stage. Summary: Allow GetThreadList() to report operation stage. Test Plan: ./thread_list_test ./db_bench --benchmarks=fillrandom --num=100000 --threads=40 \ --max_background_compactions=10 --max_background_flushes=3 \ --thread_status_per_interval=1000 --key_size=16 --value_size=1000 \ --num_column_families=10 export ROCKSDB_TESTS=ThreadStatus ./db_test Sample output ThreadID ThreadType cfName Operation OP_StartTime ElapsedTime Stage State 140116265861184 Low Pri 140116270055488 Low Pri 140116274249792 High Pri column_family_name_000005 Flush 2015/03/10-14:58:11 0 us FlushJob::WriteLevel0Table 140116400078912 Low Pri column_family_name_000004 Compaction 2015/03/10-14:58:11 0 us CompactionJob::FinishCompactionOutputFile 140116358135872 Low Pri column_family_name_000006 Compaction 2015/03/10-14:58:10 1 us CompactionJob::FinishCompactionOutputFile 140116341358656 Low Pri 140116295221312 High Pri default Flush 2015/03/10-14:58:11 0 us FlushJob::WriteLevel0Table 140116324581440 Low Pri column_family_name_000009 Compaction 2015/03/10-14:58:11 0 us CompactionJob::ProcessKeyValueCompaction 140116278444096 Low Pri 140116299415616 Low Pri column_family_name_000008 Compaction 2015/03/10-14:58:11 0 us CompactionJob::FinishCompactionOutputFile 140116291027008 High Pri column_family_name_000001 Flush 2015/03/10-14:58:11 0 us FlushJob::WriteLevel0Table 140116286832704 Low Pri column_family_name_000002 Compaction 2015/03/10-14:58:11 0 us CompactionJob::FinishCompactionOutputFile 140116282638400 Low Pri Reviewers: rven, igor, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D34683
2015-03-13 18:45:40 +01:00
struct OperationStageInfo {
const ThreadStatus::OperationStage stage;
const std::string name;
};
// A table maintains the mapping from stage type to stage string.
// Note that the string must be changed accordingly when the
// associated function name changed.
static OperationStageInfo global_op_stage_table[] = {
{ThreadStatus::STAGE_UNKNOWN, ""},
{ThreadStatus::STAGE_FLUSH_RUN,
"FlushJob::Run"},
{ThreadStatus::STAGE_FLUSH_WRITE_L0,
"FlushJob::WriteLevel0Table"},
{ThreadStatus::STAGE_COMPACTION_PREPARE,
"CompactionJob::Prepare"},
{ThreadStatus::STAGE_COMPACTION_RUN,
"CompactionJob::Run"},
{ThreadStatus::STAGE_COMPACTION_PROCESS_KV,
"CompactionJob::ProcessKeyValueCompaction"},
{ThreadStatus::STAGE_COMPACTION_FILTER_V2,
"CompactionJob::CallCompactionFilterV2"},
{ThreadStatus::STAGE_COMPACTION_INSTALL,
"CompactionJob::Install"},
{ThreadStatus::STAGE_COMPACTION_SYNC_FILE,
"CompactionJob::FinishCompactionOutputFile"},
{ThreadStatus::STAGE_PICK_MEMTABLES_TO_FLUSH,
"MemTableList::PickMemtablesToFlush"},
{ThreadStatus::STAGE_MEMTABLE_ROLLBACK,
"MemTableList::RollbackMemtableFlush"},
{ThreadStatus::STAGE_MEMTABLE_INSTALL_FLUSH_RESULTS,
"MemTableList::InstallMemtableFlushResults"},
};
// The structure that describes a state.
struct StateInfo {
const ThreadStatus::StateType type;
const std::string name;
};
// The global state table.
//
// When updating a status of a thread, the pointer of the StateInfo
// of the current ThreadStatusData will be pointing to one of the
// rows in this global table.
static StateInfo global_state_table[] = {
{ThreadStatus::STATE_UNKNOWN, ""},
{ThreadStatus::STATE_MUTEX_WAIT, "Mutex Wait"},
};
Allow GetThreadList() to report basic compaction operation properties. Summary: Now we're able to show more details about a compaction in GetThreadList() :) This patch allows GetThreadList() to report basic compaction operation properties. Basic compaction properties include: 1. job id 2. compaction input / output level 3. compaction property flags (is_manual, is_deletion, .. etc) 4. total input bytes 5. the number of bytes has been read currently. 6. the number of bytes has been written currently. Flush operation properties will be done in a seperate diff. Test Plan: /db_bench --threads=30 --num=1000000 --benchmarks=fillrandom --thread_status_per_interval=1 Sample output of tracking same job: ThreadID ThreadType cfName Operation ElapsedTime Stage State OperationProperties 140664171987072 Low Pri default Compaction 31.357 ms CompactionJob::FinishCompactionOutputFile BaseInputLevel 1 | BytesRead 2264663 | BytesWritten 1934241 | IsDeletion 0 | IsManual 0 | IsTrivialMove 0 | JobID 277 | OutputLevel 2 | TotalInputBytes 3964158 | ThreadID ThreadType cfName Operation ElapsedTime Stage State OperationProperties 140664171987072 Low Pri default Compaction 59.440 ms CompactionJob::FinishCompactionOutputFile BaseInputLevel 1 | BytesRead 2264663 | BytesWritten 1934241 | IsDeletion 0 | IsManual 0 | IsTrivialMove 0 | JobID 277 | OutputLevel 2 | TotalInputBytes 3964158 | ThreadID ThreadType cfName Operation ElapsedTime Stage State OperationProperties 140664171987072 Low Pri default Compaction 226.375 ms CompactionJob::Install BaseInputLevel 1 | BytesRead 3958013 | BytesWritten 3621940 | IsDeletion 0 | IsManual 0 | IsTrivialMove 0 | JobID 277 | OutputLevel 2 | TotalInputBytes 3964158 | Reviewers: sdong, rven, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D37653
2015-05-07 07:50:35 +02:00
struct OperationProperty {
int code;
std::string name;
};
static OperationProperty compaction_operation_properties[] = {
{ThreadStatus::COMPACTION_JOB_ID, "JobID"},
{ThreadStatus::COMPACTION_INPUT_OUTPUT_LEVEL, "InputOutputLevel"},
{ThreadStatus::COMPACTION_PROP_FLAGS, "Manual/Deletion/Trivial"},
{ThreadStatus::COMPACTION_TOTAL_INPUT_BYTES, "TotalInputBytes"},
{ThreadStatus::COMPACTION_BYTES_READ, "BytesRead"},
{ThreadStatus::COMPACTION_BYTES_WRITTEN, "BytesWritten"},
};
static OperationProperty flush_operation_properties[] = {
{ThreadStatus::FLUSH_JOB_ID, "JobID"},
{ThreadStatus::FLUSH_BYTES_READ, "BytesRead"},
{ThreadStatus::FLUSH_BYTES_REMAIN, "BytesRemain"},
{ThreadStatus::FLUSH_BYTES_WRITTEN, "BytesWritten"}
};
#else
struct OperationInfo {
};
struct StateInfo {
};
#endif // ROCKSDB_USING_THREAD_STATUS
} // namespace rocksdb