[ 'title' => __('Data home directory'), 'desc' => __('The common part of the directory path for all InnoDB data files.'), ], 'innodb_data_file_path' => [ 'title' => __('Data files'), ], 'innodb_autoextend_increment' => [ 'title' => __('Autoextend increment'), 'desc' => __( 'The increment size for extending the size of an autoextending tablespace when it becomes full.' ), 'type' => StorageEngine::DETAILS_TYPE_NUMERIC, ], 'innodb_buffer_pool_size' => [ 'title' => __('Buffer pool size'), 'desc' => __('The size of the memory buffer InnoDB uses to cache data and indexes of its tables.'), 'type' => StorageEngine::DETAILS_TYPE_SIZE, ], 'innodb_additional_mem_pool_size' => [ 'title' => 'innodb_additional_mem_pool_size', 'type' => StorageEngine::DETAILS_TYPE_SIZE, ], 'innodb_buffer_pool_awe_mem_mb' => ['type' => StorageEngine::DETAILS_TYPE_SIZE], 'innodb_checksums' => [], 'innodb_commit_concurrency' => [], 'innodb_concurrency_tickets' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_doublewrite' => [], 'innodb_fast_shutdown' => [], 'innodb_file_io_threads' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_file_per_table' => [], 'innodb_flush_log_at_trx_commit' => [], 'innodb_flush_method' => [], 'innodb_force_recovery' => [], 'innodb_lock_wait_timeout' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_locks_unsafe_for_binlog' => [], 'innodb_log_arch_dir' => [], 'innodb_log_archive' => [], 'innodb_log_buffer_size' => ['type' => StorageEngine::DETAILS_TYPE_SIZE], 'innodb_log_file_size' => ['type' => StorageEngine::DETAILS_TYPE_SIZE], 'innodb_log_files_in_group' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_log_group_home_dir' => [], 'innodb_max_dirty_pages_pct' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_max_purge_lag' => [], 'innodb_mirrored_log_groups' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_open_files' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_support_xa' => [], 'innodb_sync_spin_loops' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_table_locks' => ['type' => StorageEngine::DETAILS_TYPE_BOOLEAN], 'innodb_thread_concurrency' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], 'innodb_thread_sleep_delay' => ['type' => StorageEngine::DETAILS_TYPE_NUMERIC], ]; } /** * Returns the pattern to be used in the query for SQL variables * related to InnoDb storage engine * * @return string SQL query LIKE pattern */ public function getVariablesLikePattern() { return 'innodb\\_%'; } /** * Get information pages * * @return array detail pages */ public function getInfoPages() { if ($this->support < StorageEngine::SUPPORT_YES) { return []; } $pages = []; $pages['Bufferpool'] = __('Buffer Pool'); $pages['Status'] = __('InnoDB Status'); return $pages; } /** * returns html tables with stats over inno db buffer pool * * @return string html table with stats */ public function getPageBufferpool() { global $dbi; // The following query is only possible because we know // that we are on MySQL 5 here (checked above)! // side note: I love MySQL 5 for this. :-) $sql = 'SHOW STATUS' . ' WHERE Variable_name LIKE \'Innodb\\_buffer\\_pool\\_%\'' . ' OR Variable_name = \'Innodb_page_size\';'; $status = $dbi->fetchResult($sql, 0, 1); /** @var string[] $bytes */ $bytes = Util::formatByteDown($status['Innodb_buffer_pool_pages_total'] * $status['Innodb_page_size']); $output = '' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' '; // not present at least since MySQL 5.1.40 if (isset($status['Innodb_buffer_pool_pages_latched'])) { $output .= ' ' . ' ' . ' ' . ' '; } $output .= ' ' . "\n" . '
' . "\n" . ' ' . __('Buffer Pool Usage') . "\n" . '
' . "\n" . ' ' . __('Total:') . ' ' . Util::formatNumber($status['Innodb_buffer_pool_pages_total'], 0) . ' ' . __('pages') . ' / ' . implode(' ', $bytes) . "\n" . '
' . __('Free pages') . '' . Util::formatNumber($status['Innodb_buffer_pool_pages_free'], 0) . '
' . __('Dirty pages') . '' . Util::formatNumber($status['Innodb_buffer_pool_pages_dirty'], 0) . '
' . __('Pages containing data') . '' . Util::formatNumber($status['Innodb_buffer_pool_pages_data'], 0) . "\n" . '
' . __('Pages to be flushed') . '' . Util::formatNumber($status['Innodb_buffer_pool_pages_flushed'], 0) . "\n" . '
' . __('Busy pages') . '' . Util::formatNumber($status['Innodb_buffer_pool_pages_misc'], 0) . "\n" . '
' . __('Latched pages') . '' . Util::formatNumber($status['Innodb_buffer_pool_pages_latched'], 0) . '
' . "\n\n" . '' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . ' ' . "\n" . '
' . "\n" . ' ' . __('Buffer Pool Activity') . "\n" . '
' . __('Read requests') . '' . Util::formatNumber($status['Innodb_buffer_pool_read_requests'], 0) . "\n" . '
' . __('Write requests') . '' . Util::formatNumber($status['Innodb_buffer_pool_write_requests'], 0) . "\n" . '
' . __('Read misses') . '' . Util::formatNumber($status['Innodb_buffer_pool_reads'], 0) . "\n" . '
' . __('Write waits') . '' . Util::formatNumber($status['Innodb_buffer_pool_wait_free'], 0) . "\n" . '
' . __('Read misses in %') . '' . ($status['Innodb_buffer_pool_read_requests'] == 0 ? '---' : htmlspecialchars( Util::formatNumber( $status['Innodb_buffer_pool_reads'] * 100 / $status['Innodb_buffer_pool_read_requests'], 3, 2 ) ) . ' %') . "\n" . '
' . __('Write waits in %') . '' . ($status['Innodb_buffer_pool_write_requests'] == 0 ? '---' : htmlspecialchars( Util::formatNumber( $status['Innodb_buffer_pool_wait_free'] * 100 / $status['Innodb_buffer_pool_write_requests'], 3, 2 ) ) . ' %') . "\n" . '
' . "\n"; return $output; } /** * returns InnoDB status * * @return string result of SHOW ENGINE INNODB STATUS inside pre tags */ public function getPageStatus() { global $dbi; return '
' . "\n"
            . htmlspecialchars((string) $dbi->fetchValue(
                'SHOW ENGINE INNODB STATUS;',
                'Status'
            )) . "\n" . '
' . "\n"; } /** * returns string with filename for the MySQL helppage * about this storage engine * * @return string mysql helppage filename */ public function getMysqlHelpPage() { return 'innodb-storage-engine'; } /** * Gets the InnoDB plugin version number * * @return string the version number, or empty if not running as a plugin */ public function getInnodbPluginVersion() { global $dbi; return $dbi->fetchValue('SELECT @@innodb_version;') ?: ''; } /** * Gets the InnoDB file format * * (do not confuse this with phpMyAdmin's storage engine plugins!) * * @return string|null the InnoDB file format */ public function getInnodbFileFormat(): ?string { global $dbi; $value = $dbi->fetchValue("SHOW GLOBAL VARIABLES LIKE 'innodb_file_format';", 1); if ($value === false) { // This variable does not exist anymore on MariaDB >= 10.6.0 // This variable does not exist anymore on MySQL >= 8.0.0 return null; } return (string) $value; } /** * Verifies if this server supports the innodb_file_per_table feature * * (do not confuse this with phpMyAdmin's storage engine plugins!) */ public function supportsFilePerTable(): bool { global $dbi; return $dbi->fetchValue("SHOW GLOBAL VARIABLES LIKE 'innodb_file_per_table';", 1) === 'ON'; } }