optimizeall() is simply called from a cron script the mysql-wrapper does not exist in public but you get the table overhead with "SHOW TABLE STATUS" as you can see below
Am 28.03.2013 16:59, schrieb Bheemsen Aitha: > I would like to implement your strategy of optimizing tables. Can you please > share how are running these scripts? > Where does the mysql-wrapper-class exist? And what parameters need to be > passed? > > > On Mar 28, 2013 4:43 AM, "Reindl Harald" <h.rei...@thelounge.net > <mailto:h.rei...@thelounge.net>> wrote: > > > > Am 28.03.2013 12:28, schrieb Antonio Fernández Pérez: > > So, is it not necessary (not recommended) to defragment tables if I > have a > > lot of write operations (writing or deleting)? > > it is recommended but not permanently and not blindly > > i use a daily cronjob which runs optimize table on tables with >= 50 KB > overhead > based on this methods of a internal mysql-wrapper-class > > > public function optimizeall($action, $returntables, $flush, > $min_overhead, $only_myisam=true) > { > $output = ''; > $dblist = $this->showdatabases(); > foreach($dblist as $akt) > { > if($akt != 'information_schema' && $akt != 'performance_schema') > { > if(function_exists('apache_reset_timeout')) > { > apache_reset_timeout(); > } > $output .= $this->optimizetables($akt, $action, $returntables, > array(), $min_overhead, $only_myisam); > if($flush) > { > echo $output; > @ob_end_flush(); > flush(); > $output = ''; > } > } > } > return $output; > } > > > public function optimizetables($database, $action='optimize', > $returntables=0, array $tablelist=array(), > $min_overhead=0, $only_myisam=true) > { > global $rh_php_sapi_name; > $first = false; > $output = ''; > $sql = ''; > if(empty($database)) > { > $database = $this->parent->db; > } > if(empty($tablelist)) > { > $tablelist = $this->showtables($database); > } > if(!empty($tablelist)) > { > foreach($tablelist as $akt) > { > $ignore = false; > if($only_myisam) > { > $this->parent->select_db($database); > $type_result = $this->parent->query('SHOW TABLE STATUS LIKE \'' . > $akt . '\'', 1, 0); > $type_row = $this->parent->fetch_assoc($type_result); > if(strtolower($type_row['Engine']) == 'innodb') > { > $ignore = true; > } > } > if(!$ignore && ($min_overhead == 0 || > $this->get_table_overhead($database, $akt) >= $min_overhead)) > { > if($first) > { > $sql .= ', '; > } > else > { > $sql = $action . ' table '; > } > $sql .= '`' . $database . '`.`' . $akt . '`'; > $first = true; > if($returntables) > { > $output .= $database . '.' . $akt; > if($rh_php_sapi_name != 'cli') > { > $output .= '<br />'; > } > $output .= MY_LE; > } > } > } > if($action != 'all') > { > if(!empty($sql)) > { > $result = $this->parent->query($sql); > } > } > else > { > if(!empty($sql)) > { > $zsp = $sql; > $result = $this->parent->query(str_replace('all', 'check', $zsp), 1, > 0); > $result = $this->parent->query(str_replace('all', 'repair', $zsp), > 1, 0); > $result = $this->parent->query(str_replace('all', 'optimize', $zsp), > 1, 0); > } > } > } > return $output; > }
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