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5e47d08eb6
Merged cset:
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commit d1bb19b8f751875472211312c8e810143a7ba4b6
Author: Manuel Ung <mung@fb.com>
Date: Fri Feb 3 11:50:34 2017 -0800
...
Add cardinality stats to information schema
139 lines
3.8 KiB
C++
139 lines
3.8 KiB
C++
/*
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Portions Copyright (c) 2015-Present, Facebook, Inc.
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Portions Copyright (c) 2012,2013 Monty Program Ab
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#pragma once
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/* C++ standard header files */
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#include <atomic>
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#include <cstdint>
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#include <string>
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/* MySQL header files */
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#include "./handler.h"
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#include <my_global.h>
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#include "rdb_mariadb_port.h"
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namespace myrocks {
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enum {
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PC_USER_KEY_COMPARISON_COUNT = 0,
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PC_BLOCK_CACHE_HIT_COUNT,
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PC_BLOCK_READ_COUNT,
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PC_BLOCK_READ_BYTE,
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PC_BLOCK_READ_TIME,
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PC_BLOCK_CHECKSUM_TIME,
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PC_BLOCK_DECOMPRESS_TIME,
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PC_KEY_SKIPPED,
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PC_DELETE_SKIPPED,
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PC_GET_SNAPSHOT_TIME,
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PC_GET_FROM_MEMTABLE_TIME,
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PC_GET_FROM_MEMTABLE_COUNT,
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PC_GET_POST_PROCESS_TIME,
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PC_GET_FROM_OUTPUT_FILES_TIME,
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PC_SEEK_ON_MEMTABLE_TIME,
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PC_SEEK_ON_MEMTABLE_COUNT,
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PC_SEEK_CHILD_SEEK_TIME,
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PC_SEEK_CHILD_SEEK_COUNT,
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PC_SEEK_MIN_HEAP_TIME,
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PC_SEEK_INTERNAL_SEEK_TIME,
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PC_FIND_NEXT_USER_ENTRY_TIME,
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PC_WRITE_WAL_TIME,
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PC_WRITE_MEMTABLE_TIME,
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PC_WRITE_DELAY_TIME,
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PC_WRITE_PRE_AND_POST_PROCESSS_TIME,
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PC_DB_MUTEX_LOCK_NANOS,
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PC_DB_CONDITION_WAIT_NANOS,
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PC_MERGE_OPERATOR_TIME_NANOS,
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PC_READ_INDEX_BLOCK_NANOS,
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PC_READ_FILTER_BLOCK_NANOS,
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PC_NEW_TABLE_BLOCK_ITER_NANOS,
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PC_NEW_TABLE_ITERATOR_NANOS,
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PC_BLOCK_SEEK_NANOS,
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PC_FIND_TABLE_NANOS,
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PC_IO_THREAD_POOL_ID,
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PC_IO_BYTES_WRITTEN,
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PC_IO_BYTES_READ,
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PC_IO_OPEN_NANOS,
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PC_IO_ALLOCATE_NANOS,
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PC_IO_WRITE_NANOS,
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PC_IO_READ_NANOS,
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PC_IO_RANGE_SYNC_NANOS,
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PC_IO_LOGGER_NANOS,
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PC_MAX_IDX
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};
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class Rdb_perf_counters;
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/*
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A collection of performance counters that can be safely incremented by
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multiple threads since it stores atomic datapoints.
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*/
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struct Rdb_atomic_perf_counters {
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std::atomic_ullong m_value[PC_MAX_IDX];
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};
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/*
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A collection of performance counters that is meant to be incremented by
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a single thread.
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*/
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class Rdb_perf_counters {
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Rdb_perf_counters(const Rdb_perf_counters &) = delete;
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Rdb_perf_counters &operator=(const Rdb_perf_counters &) = delete;
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public:
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Rdb_perf_counters() = default;
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uint64_t m_value[PC_MAX_IDX];
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void load(const Rdb_atomic_perf_counters &atomic_counters);
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};
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extern std::string rdb_pc_stat_types[PC_MAX_IDX];
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/*
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Perf timers for data reads
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*/
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class Rdb_io_perf {
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// Context management
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Rdb_atomic_perf_counters *m_atomic_counters = nullptr;
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my_io_perf_atomic_t *m_shared_io_perf_read = nullptr;
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ha_statistics *m_stats = nullptr;
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public:
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Rdb_io_perf(const Rdb_io_perf &) = delete;
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Rdb_io_perf &operator=(const Rdb_io_perf &) = delete;
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void init(Rdb_atomic_perf_counters *const atomic_counters,
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my_io_perf_atomic_t *const shared_io_perf_read,
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ha_statistics *const stats) {
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DBUG_ASSERT(atomic_counters != nullptr);
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DBUG_ASSERT(shared_io_perf_read != nullptr);
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DBUG_ASSERT(stats != nullptr);
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m_atomic_counters = atomic_counters;
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m_shared_io_perf_read = shared_io_perf_read;
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m_stats = stats;
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}
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bool start(const uint32_t perf_context_level);
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void end_and_record(const uint32_t perf_context_level);
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explicit Rdb_io_perf()
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: m_atomic_counters(nullptr), m_shared_io_perf_read(nullptr),
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m_stats(nullptr) {}
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};
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} // namespace myrocks
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