You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
259 lines
6.7 KiB
259 lines
6.7 KiB
<?php
|
|
/*
|
|
V4.55 3 Jan 2005 (c) 2000-2005 John Lim (jlim@natsoft.com.my). All rights reserved.
|
|
Released under both BSD license and Lesser GPL library license.
|
|
Whenever there is any discrepancy between the two licenses,
|
|
the BSD license will take precedence. See License.txt.
|
|
Set tabs to 4 for best viewing.
|
|
|
|
Latest version is available at http://adodb.sourceforge.net
|
|
|
|
Library for basic performance monitoring and tuning
|
|
|
|
*/
|
|
|
|
// security - hide paths
|
|
if (!defined('ADODB_DIR')) die();
|
|
|
|
class perf_mysql extends adodb_perf{
|
|
|
|
var $tablesSQL = 'show table status';
|
|
|
|
var $createTableSQL = "CREATE TABLE adodb_logsql (
|
|
created datetime NOT NULL,
|
|
sql0 varchar(250) NOT NULL,
|
|
sql1 text NOT NULL,
|
|
params text NOT NULL,
|
|
tracer text NOT NULL,
|
|
timer decimal(16,6) NOT NULL
|
|
)";
|
|
|
|
var $settings = array(
|
|
'Ratios',
|
|
'MyISAM cache hit ratio' => array('RATIO',
|
|
'=GetKeyHitRatio',
|
|
'=WarnCacheRatio'),
|
|
'InnoDB cache hit ratio' => array('RATIO',
|
|
'=GetInnoDBHitRatio',
|
|
'=WarnCacheRatio'),
|
|
'data cache hit ratio' => array('HIDE', # only if called
|
|
'=FindDBHitRatio',
|
|
'=WarnCacheRatio'),
|
|
'sql cache hit ratio' => array('RATIO',
|
|
'=GetQHitRatio',
|
|
''),
|
|
'IO',
|
|
'data reads' => array('IO',
|
|
'=GetReads',
|
|
'Number of selects (Key_reads is not accurate)'),
|
|
'data writes' => array('IO',
|
|
'=GetWrites',
|
|
'Number of inserts/updates/deletes * coef (Key_writes is not accurate)'),
|
|
|
|
'Data Cache',
|
|
'MyISAM data cache size' => array('DATAC',
|
|
array("show variables", 'key_buffer_size'),
|
|
'' ),
|
|
'BDB data cache size' => array('DATAC',
|
|
array("show variables", 'bdb_cache_size'),
|
|
'' ),
|
|
'InnoDB data cache size' => array('DATAC',
|
|
array("show variables", 'innodb_buffer_pool_size'),
|
|
'' ),
|
|
'Memory Usage',
|
|
'read buffer size' => array('CACHE',
|
|
array("show variables", 'read_buffer_size'),
|
|
'(per session)'),
|
|
'sort buffer size' => array('CACHE',
|
|
array("show variables", 'sort_buffer_size'),
|
|
'Size of sort buffer (per session)' ),
|
|
'table cache' => array('CACHE',
|
|
array("show variables", 'table_cache'),
|
|
'Number of tables to keep open'),
|
|
'Connections',
|
|
'current connections' => array('SESS',
|
|
array('show status','Threads_connected'),
|
|
''),
|
|
'max connections' => array( 'SESS',
|
|
array("show variables",'max_connections'),
|
|
''),
|
|
|
|
false
|
|
);
|
|
|
|
function perf_mysql(&$conn)
|
|
{
|
|
$this->conn =& $conn;
|
|
}
|
|
|
|
function Explain($sql,$partial=false)
|
|
{
|
|
|
|
if (strtoupper(substr(trim($sql),0,6)) !== 'SELECT') return '<p>Unable to EXPLAIN non-select statement</p>';
|
|
$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");
|
|
}
|
|
|
|
$s = '<p><b>Explain</b>: '.htmlspecialchars($sql).'</p>';
|
|
$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;
|
|
$rs = $this->conn->Execute('show status');
|
|
$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;
|
|
$rs = $this->conn->Execute('show status');
|
|
$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;
|
|
$rs = $this->conn->Execute('show table status');
|
|
if (!$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 ($hits*100)/$total;
|
|
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 $HTTP_SESSION_VARS;
|
|
|
|
$rs = $this->conn->Execute('show innodb status');
|
|
if (!$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];
|
|
$HTTP_SESSION_VARS['INNODB_HIT_PCT'] = $val;
|
|
return $val;
|
|
} else {
|
|
if (isset($HTTP_SESSION_VARS['INNODB_HIT_PCT'])) return $HTTP_SESSION_VARS['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 ($hits/($reqs+$hits))*100;
|
|
}
|
|
|
|
}
|
|
?>
|