php - Yii SQL Profiling of AJAX 调用

Question

Yii 提供了一个设置，用每个 SQL 调用的执行时间（CProfileLogRoute）来描述所有的 SQL 调用。除非它不适用于 ajax 调用。我怎样才能访问这些数据？

我试图找到打开登录弹出窗口的 ajax 调用的瓶颈......

类似地，CProfileLogRoute 中显示的执行时间是否包括到 SQL 服务器的网络行程（如果有）？我的数据库由亚马逊的 RDS 托管，我想知道这是否是瓶颈所在（在本地似乎很好）。

Answer 1

您可以尝试以下面建议的方式扩展CFileLogRoute并在应用程序的配置中启用它，如下所示：

'log'=>array(
    'class'=>'CLogRouter',
    'routes'=>array(
        array(
            'class'=>'ProfileLogRoute',
            'levels' => "profile"
        )
    )
)

在这种情况下，所有已分析的查询都将写入位于protected/runtime目录中的日志文件（方法的覆盖同样实现CProfileWebRouteprocessLogs的摘要报告......不幸的是来自CWebLogRoute）：CProfileWebRoute

<?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']
        );
    }
}

如果你想知道 Yii 是如何测量 SQL 执行时间的，你可以查看CDbCommand类的源代码 -queryInternal方法，更准确地说。分析介于Yii::beginProfile('system.db.CDbCommand.query...')和Yii::endProfile('system.db.CDbCommand.query...')调用之间。正如您所看到的，这两个调用都在同一个方法中，因此分析时间不包括网络传输。问题可能在于您的远程数据库服务器在巨大的负载下运行。

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.