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array('RATIO',
'=GetKeyHitRatio',
'=WarnCacheRatio'),
'InnoDB cache hit ratio' => array('RATIO',
'=GetInnoDBHitRatio',
'=WarnCacheRatio'),
'data cache hit ratio' => array('HIDE', # only if called
'=FindDBHitRatio',
'=WarnCacheRatio'),
'sql cache hit ratio' => array('RATIO',
'=GetQHitRatio',
''),
'IO',
'data reads' => array('IO',
'=GetReads',
'Number of selects (Key_reads is not accurate)'),
'data writes' => array('IO',
'=GetWrites',
'Number of inserts/updates/deletes * coef (Key_writes is not accurate)'),
'Data Cache',
'MyISAM data cache size' => array('DATAC',
array("show variables", 'key_buffer_size'),
'' ),
'BDB data cache size' => array('DATAC',
array("show variables", 'bdb_cache_size'),
'' ),
'InnoDB data cache size' => array('DATAC',
array("show variables", 'innodb_buffer_pool_size'),
'' ),
'Memory Usage',
'read buffer size' => array('CACHE',
array("show variables", 'read_buffer_size'),
'(per session)'),
'sort buffer size' => array('CACHE',
array("show variables", 'sort_buffer_size'),
'Size of sort buffer (per session)' ),
'table cache' => array('CACHE',
array("show variables", 'table_cache'),
'Number of tables to keep open'),
'Connections',
'current connections' => array('SESS',
array('show status','Threads_connected'),
''),
'max connections' => array( 'SESS',
array("show variables",'max_connections'),
''),
false
);
function perf_mysql(&$conn)
{
$this->conn = $conn;
}
function Explain($sql,$partial=false)
{
if (strtoupper(substr(trim($sql),0,6)) !== 'SELECT') return '
Unable to EXPLAIN non-select statement
'; $save = $this->conn->LogSQL(false); if ($partial) { $sqlq = $this->conn->qstr($sql.'%'); $arr = $this->conn->GetArray("select distinct sql1 from adodb_logsql where sql1 like $sqlq"); if ($arr) { foreach($arr as $row) { $sql = reset($row); if (crc32($sql) == $partial) break; } } } $sql = str_replace('?',"''",$sql); if ($partial) { $sqlq = $this->conn->qstr($sql.'%'); $sql = $this->conn->GetOne("select sql1 from adodb_logsql where sql1 like $sqlq"); } $s = 'Explain: '.htmlspecialchars($sql).'
'; $rs = $this->conn->Execute('EXPLAIN '.$sql); $s .= rs2html($rs,false,false,false,false); $this->conn->LogSQL($save); $s .= $this->Tracer($sql); return $s; } function Tables() { if (!$this->tablesSQL) return false; $rs = $this->conn->Execute($this->tablesSQL); if (!$rs) return false; $html = rs2html($rs,false,false,false,false); return $html; } function GetReads() { global $ADODB_FETCH_MODE; $save = $ADODB_FETCH_MODE; $ADODB_FETCH_MODE = ADODB_FETCH_NUM; if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); $rs = $this->conn->Execute('show status'); if (isset($savem)) $this->conn->SetFetchMode($savem); $ADODB_FETCH_MODE = $save; if (!$rs) return 0; $val = 0; while (!$rs->EOF) { switch($rs->fields[0]) { case 'Com_select': $val = $rs->fields[1]; $rs->Close(); return $val; } $rs->MoveNext(); } $rs->Close(); return $val; } function GetWrites() { global $ADODB_FETCH_MODE; $save = $ADODB_FETCH_MODE; $ADODB_FETCH_MODE = ADODB_FETCH_NUM; if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); $rs = $this->conn->Execute('show status'); if (isset($savem)) $this->conn->SetFetchMode($savem); $ADODB_FETCH_MODE = $save; if (!$rs) return 0; $val = 0.0; while (!$rs->EOF) { switch($rs->fields[0]) { case 'Com_insert': $val += $rs->fields[1]; break; case 'Com_delete': $val += $rs->fields[1]; break; case 'Com_update': $val += $rs->fields[1]/2; $rs->Close(); return $val; } $rs->MoveNext(); } $rs->Close(); return $val; } function FindDBHitRatio() { // first find out type of table //$this->conn->debug=1; global $ADODB_FETCH_MODE; $save = $ADODB_FETCH_MODE; $ADODB_FETCH_MODE = ADODB_FETCH_NUM; if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); $rs = $this->conn->Execute('show table status'); if (isset($savem)) $this->conn->SetFetchMode($savem); $ADODB_FETCH_MODE = $save; if (!$rs) return ''; $type = strtoupper($rs->fields[1]); $rs->Close(); switch($type){ case 'MYISAM': case 'ISAM': return $this->DBParameter('MyISAM cache hit ratio').' (MyISAM)'; case 'INNODB': return $this->DBParameter('InnoDB cache hit ratio').' (InnoDB)'; default: return $type.' not supported'; } } function GetQHitRatio() { //Total number of queries = Qcache_inserts + Qcache_hits + Qcache_not_cached $hits = $this->_DBParameter(array("show status","Qcache_hits")); $total = $this->_DBParameter(array("show status","Qcache_inserts")); $total += $this->_DBParameter(array("show status","Qcache_not_cached")); $total += $hits; if ($total) return round(($hits*100)/$total,2); return 0; } /* Use session variable to store Hit percentage, because MySQL does not remember last value of SHOW INNODB STATUS hit ratio # 1st query to SHOW INNODB STATUS 0.00 reads/s, 0.00 creates/s, 0.00 writes/s Buffer pool hit rate 1000 / 1000 # 2nd query to SHOW INNODB STATUS 0.00 reads/s, 0.00 creates/s, 0.00 writes/s No buffer pool activity since the last printout */ function GetInnoDBHitRatio() { global $ADODB_FETCH_MODE; $save = $ADODB_FETCH_MODE; $ADODB_FETCH_MODE = ADODB_FETCH_NUM; if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); $rs = $this->conn->Execute('show engine innodb status'); if (isset($savem)) $this->conn->SetFetchMode($savem); $ADODB_FETCH_MODE = $save; if (!$rs || $rs->EOF) return 0; $stat = $rs->fields[0]; $rs->Close(); $at = strpos($stat,'Buffer pool hit rate'); $stat = substr($stat,$at,200); if (preg_match('!Buffer pool hit rate\s*([0-9]*) / ([0-9]*)!',$stat,$arr)) { $val = 100*$arr[1]/$arr[2]; $_SESSION['INNODB_HIT_PCT'] = $val; return round($val,2); } else { if (isset($_SESSION['INNODB_HIT_PCT'])) return $_SESSION['INNODB_HIT_PCT']; return 0; } return 0; } function GetKeyHitRatio() { $hits = $this->_DBParameter(array("show status","Key_read_requests")); $reqs = $this->_DBParameter(array("show status","Key_reads")); if ($reqs == 0) return 0; return round(($hits/($reqs+$hits))*100,2); } // start hack var $optimizeTableLow = 'CHECK TABLE %s FAST QUICK'; var $optimizeTableHigh = 'OPTIMIZE TABLE %s'; /** * @see adodb_perf#optimizeTable */ function optimizeTable( $table, $mode = ADODB_OPT_LOW) { if ( !is_string( $table)) return false; $conn = $this->conn; if ( !$conn) return false; $sql = ''; switch( $mode) { case ADODB_OPT_LOW : $sql = $this->optimizeTableLow; break; case ADODB_OPT_HIGH : $sql = $this->optimizeTableHigh; break; default : { // May dont use __FUNCTION__ constant for BC (__FUNCTION__ Added in PHP 4.3.0) ADOConnection::outp( sprintf( "%s: '%s' using of undefined mode '%s'
", __CLASS__, __FUNCTION__, $mode)); return false; } } $sql = sprintf( $sql, $table); return $conn->Execute( $sql) !== false; } // end hack } ?>