352 lines
11 KiB
C++
352 lines
11 KiB
C++
/* Copyright (c) 2010, 2019, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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@file storage/perfschema/table_esms_by_digest.cc
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Table EVENTS_STATEMENTS_SUMMARY_GLOBAL_BY_DIGEST (implementation).
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*/
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#include "storage/perfschema/table_esms_by_digest.h"
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#include <stddef.h>
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#include "my_dbug.h"
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#include "my_thread.h"
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#include "sql/field.h"
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#include "sql/plugin_table.h"
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#include "sql/table.h"
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#include "storage/perfschema/pfs_column_types.h"
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#include "storage/perfschema/pfs_column_values.h"
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#include "storage/perfschema/pfs_digest.h"
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#include "storage/perfschema/pfs_global.h"
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#include "storage/perfschema/pfs_instr.h"
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#include "storage/perfschema/pfs_instr_class.h"
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#include "storage/perfschema/pfs_timer.h"
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#include "storage/perfschema/pfs_visitor.h"
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THR_LOCK table_esms_by_digest::m_table_lock;
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Plugin_table table_esms_by_digest::m_table_def(
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/* Schema name */
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"performance_schema",
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/* Name */
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"events_statements_summary_by_digest",
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/* Definition */
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" SCHEMA_NAME VARCHAR(64),\n"
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" DIGEST VARCHAR(64),\n"
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" DIGEST_TEXT LONGTEXT,\n"
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" COUNT_STAR BIGINT unsigned not null,\n"
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" SUM_TIMER_WAIT BIGINT unsigned not null,\n"
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" MIN_TIMER_WAIT BIGINT unsigned not null,\n"
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" AVG_TIMER_WAIT BIGINT unsigned not null,\n"
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" MAX_TIMER_WAIT BIGINT unsigned not null,\n"
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" SUM_LOCK_TIME BIGINT unsigned not null,\n"
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" SUM_ERRORS BIGINT unsigned not null,\n"
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" SUM_WARNINGS BIGINT unsigned not null,\n"
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" SUM_ROWS_AFFECTED BIGINT unsigned not null,\n"
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" SUM_ROWS_SENT BIGINT unsigned not null,\n"
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" SUM_ROWS_EXAMINED BIGINT unsigned not null,\n"
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" SUM_CREATED_TMP_DISK_TABLES BIGINT unsigned not null,\n"
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" SUM_CREATED_TMP_TABLES BIGINT unsigned not null,\n"
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" SUM_SELECT_FULL_JOIN BIGINT unsigned not null,\n"
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" SUM_SELECT_FULL_RANGE_JOIN BIGINT unsigned not null,\n"
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" SUM_SELECT_RANGE BIGINT unsigned not null,\n"
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" SUM_SELECT_RANGE_CHECK BIGINT unsigned not null,\n"
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" SUM_SELECT_SCAN BIGINT unsigned not null,\n"
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" SUM_SORT_MERGE_PASSES BIGINT unsigned not null,\n"
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" SUM_SORT_RANGE BIGINT unsigned not null,\n"
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" SUM_SORT_ROWS BIGINT unsigned not null,\n"
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" SUM_SORT_SCAN BIGINT unsigned not null,\n"
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" SUM_NO_INDEX_USED BIGINT unsigned not null,\n"
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" SUM_NO_GOOD_INDEX_USED BIGINT unsigned not null,\n"
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" FIRST_SEEN TIMESTAMP(6) NOT NULL default 0,\n"
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" LAST_SEEN TIMESTAMP(6) NOT NULL default 0,\n"
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" QUANTILE_95 BIGINT unsigned not null,\n"
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" QUANTILE_99 BIGINT unsigned not null,\n"
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" QUANTILE_999 BIGINT unsigned not null,\n"
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" QUERY_SAMPLE_TEXT LONGTEXT,\n"
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" QUERY_SAMPLE_SEEN TIMESTAMP(6) NOT NULL default 0,\n"
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" QUERY_SAMPLE_TIMER_WAIT BIGINT unsigned NOT NULL,\n"
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" UNIQUE KEY (SCHEMA_NAME, DIGEST) USING HASH\n",
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/* Options */
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" ENGINE=PERFORMANCE_SCHEMA",
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/* Tablespace */
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nullptr);
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PFS_engine_table_share table_esms_by_digest::m_share = {
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&pfs_truncatable_acl,
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table_esms_by_digest::create,
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NULL, /* write_row */
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table_esms_by_digest::delete_all_rows,
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table_esms_by_digest::get_row_count,
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sizeof(PFS_simple_index),
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&m_table_lock,
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&m_table_def,
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false, /* perpetual */
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PFS_engine_table_proxy(),
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{0},
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false /* m_in_purgatory */
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};
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bool PFS_index_esms_by_digest::match(PFS_statements_digest_stat *pfs) {
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if (m_fields >= 1) {
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if (!m_key_1.match(pfs)) {
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return false;
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}
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}
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if (m_fields >= 2) {
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return m_key_2.match(pfs);
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}
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return true;
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}
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PFS_engine_table *table_esms_by_digest::create(PFS_engine_table_share *) {
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return new table_esms_by_digest();
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}
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int table_esms_by_digest::delete_all_rows(void) {
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reset_esms_by_digest();
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return 0;
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}
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ha_rows table_esms_by_digest::get_row_count(void) { return digest_max; }
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table_esms_by_digest::table_esms_by_digest()
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: PFS_engine_table(&m_share, &m_pos), m_pos(0), m_next_pos(0) {
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m_normalizer = time_normalizer::get_statement();
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}
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void table_esms_by_digest::reset_position(void) {
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m_pos = 0;
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m_next_pos = 0;
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}
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int table_esms_by_digest::rnd_next(void) {
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PFS_statements_digest_stat *digest_stat;
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if (statements_digest_stat_array == NULL) {
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return HA_ERR_END_OF_FILE;
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}
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for (m_pos.set_at(&m_next_pos); m_pos.m_index < digest_max; m_pos.next()) {
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digest_stat = &statements_digest_stat_array[m_pos.m_index];
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if (digest_stat->m_lock.is_populated()) {
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if (digest_stat->m_first_seen != 0) {
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m_next_pos.set_after(&m_pos);
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return make_row(digest_stat);
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}
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}
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}
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return HA_ERR_END_OF_FILE;
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}
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int table_esms_by_digest::rnd_pos(const void *pos) {
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PFS_statements_digest_stat *digest_stat;
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if (statements_digest_stat_array == NULL) {
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return HA_ERR_END_OF_FILE;
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}
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set_position(pos);
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digest_stat = &statements_digest_stat_array[m_pos.m_index];
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if (digest_stat->m_lock.is_populated()) {
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if (digest_stat->m_first_seen != 0) {
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return make_row(digest_stat);
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}
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}
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return HA_ERR_RECORD_DELETED;
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}
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int table_esms_by_digest::index_init(uint idx MY_ATTRIBUTE((unused)), bool) {
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PFS_index_esms_by_digest *result = NULL;
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DBUG_ASSERT(idx == 0);
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result = PFS_NEW(PFS_index_esms_by_digest);
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m_opened_index = result;
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m_index = result;
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return 0;
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}
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int table_esms_by_digest::index_next(void) {
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PFS_statements_digest_stat *digest_stat;
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if (statements_digest_stat_array == NULL) {
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return HA_ERR_END_OF_FILE;
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}
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for (m_pos.set_at(&m_next_pos); m_pos.m_index < digest_max; m_pos.next()) {
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digest_stat = &statements_digest_stat_array[m_pos.m_index];
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if (digest_stat->m_first_seen != 0) {
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if (m_opened_index->match(digest_stat)) {
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if (!make_row(digest_stat)) {
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m_next_pos.set_after(&m_pos);
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return 0;
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}
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}
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}
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}
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return HA_ERR_END_OF_FILE;
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}
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int table_esms_by_digest::make_row(PFS_statements_digest_stat *digest_stat) {
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m_row.m_first_seen = digest_stat->m_first_seen;
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m_row.m_last_seen = digest_stat->m_last_seen;
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m_row.m_digest.make_row(digest_stat);
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/*
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Get statements stats.
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*/
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m_row.m_stat.set(m_normalizer, &digest_stat->m_stat);
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PFS_histogram *histogram = &digest_stat->m_histogram;
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ulong index;
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ulonglong count_star = 0;
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for (index = 0; index < NUMBER_OF_BUCKETS; index++) {
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count_star += histogram->read_bucket(index);
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}
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if (count_star == 0) {
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m_row.m_p95 = 0;
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m_row.m_p99 = 0;
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m_row.m_p999 = 0;
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} else {
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ulonglong count_95 = ((count_star * 95) + 99) / 100;
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ulonglong count_99 = ((count_star * 99) + 99) / 100;
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ulonglong count_999 = ((count_star * 999) + 999) / 1000;
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DBUG_ASSERT(count_95 != 0);
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DBUG_ASSERT(count_95 <= count_star);
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DBUG_ASSERT(count_99 != 0);
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DBUG_ASSERT(count_99 <= count_star);
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DBUG_ASSERT(count_999 != 0);
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DBUG_ASSERT(count_999 <= count_star);
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ulong index_95 = 0;
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ulong index_99 = 0;
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ulong index_999 = 0;
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bool index_95_set = false;
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bool index_99_set = false;
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bool index_999_set = false;
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ulonglong count = 0;
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for (index = 0; index < NUMBER_OF_BUCKETS; index++) {
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count += histogram->read_bucket(index);
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if ((count >= count_95) && !index_95_set) {
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index_95 = index;
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index_95_set = true;
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}
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if ((count >= count_99) && !index_99_set) {
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index_99 = index;
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index_99_set = true;
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}
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if ((count >= count_999) && !index_999_set) {
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index_999 = index;
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index_999_set = true;
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}
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}
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m_row.m_p95 = g_histogram_pico_timers.m_bucket_timer[index_95 + 1];
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m_row.m_p99 = g_histogram_pico_timers.m_bucket_timer[index_99 + 1];
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m_row.m_p999 = g_histogram_pico_timers.m_bucket_timer[index_999 + 1];
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}
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/* Format the query sample sqltext string for output. */
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format_sqltext(digest_stat->m_query_sample,
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digest_stat->m_query_sample_length,
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get_charset(digest_stat->m_query_sample_cs_number, MYF(0)),
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digest_stat->m_query_sample_truncated, m_row.m_query_sample);
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m_row.m_query_sample_seen = digest_stat->m_query_sample_seen;
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m_row.m_query_sample_timer_wait =
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m_normalizer->wait_to_pico(digest_stat->m_query_sample_timer_wait);
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return 0;
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}
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int table_esms_by_digest::read_row_values(TABLE *table, unsigned char *buf,
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Field **fields, bool read_all) {
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Field *f;
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/*
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Set the null bits. It indicates how many fields could be null
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in the table.
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*/
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DBUG_ASSERT(table->s->null_bytes == 1);
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buf[0] = 0;
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for (; (f = *fields); fields++) {
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if (read_all || bitmap_is_set(table->read_set, f->field_index)) {
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switch (f->field_index) {
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case 0: /* SCHEMA_NAME */
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case 1: /* DIGEST */
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case 2: /* DIGEST_TEXT */
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m_row.m_digest.set_field(f->field_index, f);
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break;
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case 27: /* FIRST_SEEN */
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set_field_timestamp(f, m_row.m_first_seen);
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break;
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case 28: /* LAST_SEEN */
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set_field_timestamp(f, m_row.m_last_seen);
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break;
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case 29: /* QUANTILE_95 */
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set_field_ulonglong(f, m_row.m_p95);
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break;
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case 30: /* QUANTILE_99 */
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set_field_ulonglong(f, m_row.m_p99);
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break;
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case 31: /* QUANTILE_999 */
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set_field_ulonglong(f, m_row.m_p999);
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break;
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case 32: /* QUERY_SAMPLE_TEXT */
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if (m_row.m_query_sample.length())
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set_field_text(f, m_row.m_query_sample.ptr(),
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m_row.m_query_sample.length(),
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m_row.m_query_sample.charset());
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else {
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f->set_null();
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}
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break;
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case 33: /* QUERY_SAMPLE_SEEN */
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set_field_timestamp(f, m_row.m_query_sample_seen);
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break;
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case 34: /* QUERY_SAMPLE_TIMER_WAIT */
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set_field_ulonglong(f, m_row.m_query_sample_timer_wait);
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break;
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default: /* 3, ... COUNT/SUM/MIN/AVG/MAX */
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m_row.m_stat.set_field(f->field_index - 3, f);
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break;
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}
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}
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}
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return 0;
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}
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