Yii SQL Profiling of AJAX calls - php

Question

Yii offers a setting that profiles all the SQL calls with the execution time of each (CProfileLogRoute). Except it does not work for ajax calls. How can I access this data?
I am trying to find the bottleneck of an ajax call that opens up a login popup...
On a similar note, does the execution time shown in CProfileLogRoute includes the network trip to the SQL server if any? My database is hosted by Amazon's RDS, and I want to know if that's where the bottleneck is (it seems fine locally).

Answer 1

You can try to extend CFileLogRoute in the manner proposed below and enable it in application's configuration like this:
'log'=>array(
'class'=>'CLogRouter',
'routes'=>array(
array(
'class'=>'ProfileLogRoute',
'levels' => "profile"
)
)
)
In this case all profiled queries will be written to a log file located in protected/runtime directory (overriding of processLogs method is implemented likewise summary report of CProfileWebRoute...unfortunately CProfileWebRoute is derived from CWebLogRoute):
<?php
class ProfileLogRoute extends CFileLogRoute
{
protected function processLogs($logs)
{
$logFile=$this->getLogPath().DIRECTORY_SEPARATOR.$this->getLogFile();
if(#filesize($logFile)>$this->getMaxFileSize()*1024)
$this->rotateFiles();
$fp=#fopen($logFile,'a');
#flock($fp,LOCK_EX);
$profileStack = array();
$profileResults = array();
foreach ($logs as $log)
{
if ($log[1] === CLogger::LEVEL_PROFILE)
{
$message = $log[0];
if (!strncasecmp($message, 'begin:', 6))
{
$log[0] = substr($message,6);
$profileStack[] = $log;
}
else if(!strncasecmp($message, 'end:', 4))
{
$token = substr($message,4);
if(($last = array_pop($profileStack)) !== null && $last[0] === $token)
{
$info = array(
'delta' => $log[3] - $last[3],
'category' => $last[2],
'time' => $last[3]
);
$this->aggregateResult($token, $info, $profileResults);
}
else
{
throw new CException(Yii::t('yii','CProfileLogRoute found a mismatching code block "{token}". Make sure the calls to Yii::beginProfile() and Yii::endProfile() be properly nested.',
array('{token}'=>$token)));
}
}
}
else
{
#fwrite($fp,$this->formatLogMessage($log[0],$log[1],$log[2],$log[3]));
}
}
if (!empty($profileResults))
{
$now = microtime(true);
while(($last = array_pop($profileStack)) !== null)
{
$info = array(
'delta' => $now - $last[3],
'category' => $last[2],
'time' => $last[3]
);
$token = $last[0];
$this->aggregateResult($token, $info, $profileResults);
}
$entries = array_values($profileResults);
$func = create_function('$a,$b','return $a["total"]<$b["total"]?1:0;');
usort($entries, $func);
foreach ($entries as $entry)
{
$message = sprintf("Min: % 11.8f Max: % 11.8f Total: % 11.8f Calls: % 3d %s", $entry['min'], $entry['max'], $entry['total'], $entry['calls'], $entry['token']);
#fwrite($fp, $this->formatLogMessage($message, CLogger::LEVEL_PROFILE, $entry['category'], $entry['time']));
}
}
#flock($fp,LOCK_UN);
#fclose($fp);
}
protected function aggregateResult($token, $info, &$results)
{
if (isset($results[$token]))
{
if ($info['delta'] < $results[$token]['min'])
$results[$token]['min'] = $info['delta'];
else if($info['delta'] > $results[$token]['max'])
$results[$token]['max'] = $info['delta'];
$results[$token]['calls']++;
$results[$token]['total'] += $info['delta'];
return;
}
$results[$token] = array(
'token' => $token,
'calls' => 1,
'min' => $info['delta'],
'max' => $info['delta'],
'total' => $info['delta'],
'category' => $info['category'],
'time' => $info['time']
);
}
}
If you want to know how Yii measures a time of SQL execution you can look at the source code of CDbCommand class - queryInternal method, to be more precise. Profiling is between Yii::beginProfile('system.db.CDbCommand.query...') and Yii::endProfile('system.db.CDbCommand.query...') calls. As you can see both these calls are within the same method, as the result the time of profiling doesn't include a network transfer. Probably, the issue is that your remote database server runs under huge load.

Answer 2

There is a property of the CProfileLogRoute class called ignoreAjaxInFireBug which defaults to "true" by setting it to false you can get your profiling info on ajax requests.
http://www.yiiframework.com/doc/api/1.1/CWebLogRoute#ignoreAjaxInFireBug-detail
'log'=>array(
'class'=>'CLogRouter',
'routes'=>array(
array(
'class'=>'CProfileLogRoute',
'ignoreAjaxInFireBug'=>false,
'levels'=>'error, warning, trace, info, profile',
),
),
I don't believe ou need to use firebug for that work (it's kind of a misnomer). If you do however, just download firefox and install firebug and then your problem is still solved.