www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/piwik/piwik/core/Profiler.php
<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik;
use Exception;
use XHProfRuns_Default;
/**
* Class Profiler helps with measuring memory, and profiling the database.
* To enable set in your config.ini.php
* [Debug]
* enable_sql_profiler = 1
*
* [log]
* log_writers[] = file
* log_level=debug
*
*/
class Profiler
{
/**
* Whether xhprof has been setup or not.
*
* @var bool
*/
private static $isXhprofSetup = false;
/**
* Returns memory usage
*
* @return string
*/
public static function getMemoryUsage()
{
$memory = false;
if (function_exists('xdebug_memory_usage')) {
$memory = xdebug_memory_usage();
} elseif (function_exists('memory_get_usage')) {
$memory = memory_get_usage();
}
if ($memory === false) {
return "Memory usage function not found.";
}
$usage = number_format(round($memory / 1024 / 1024, 2), 2);
return "$usage Mb";
}
/**
* Outputs SQL Profiling reports from Zend
*
* @throws \Exception
*/
public static function displayDbProfileReport()
{
$profiler = Db::get()->getProfiler();
if (!$profiler->getEnabled()) {
// To display the profiler you should enable enable_sql_profiler on your config/config.ini.php file
return;
}
$infoIndexedByQuery = array();
foreach ($profiler->getQueryProfiles() as $query) {
if (isset($infoIndexedByQuery[$query->getQuery()])) {
$existing = $infoIndexedByQuery[$query->getQuery()];
} else {
$existing = array('count' => 0, 'sumTimeMs' => 0);
}
$new = array('count' => $existing['count'] + 1,
'sumTimeMs' => $existing['count'] + $query->getElapsedSecs() * 1000);
$infoIndexedByQuery[$query->getQuery()] = $new;
}
uasort($infoIndexedByQuery, 'self::sortTimeDesc');
$str = '<hr /><strong>SQL Profiler</strong><hr /><strong>Summary</strong><br/>';
$totalTime = $profiler->getTotalElapsedSecs();
$queryCount = $profiler->getTotalNumQueries();
$longestTime = 0;
$longestQuery = null;
foreach ($profiler->getQueryProfiles() as $query) {
if ($query->getElapsedSecs() > $longestTime) {
$longestTime = $query->getElapsedSecs();
$longestQuery = $query->getQuery();
}
}
$str .= 'Executed ' . $queryCount . ' queries in ' . round($totalTime, 3) . ' seconds';
$str .= '(Average query length: ' . round($totalTime / $queryCount, 3) . ' seconds)';
$str .= '<br />Queries per second: ' . round($queryCount / $totalTime, 1);
$str .= '<br />Longest query length: ' . round($longestTime, 3) . " seconds (<code>$longestQuery</code>)";
Log::debug($str);
self::getSqlProfilingQueryBreakdownOutput($infoIndexedByQuery);
}
private static function maxSumMsFirst($a, $b)
{
return $a['sum_time_ms'] < $b['sum_time_ms'];
}
private static function sortTimeDesc($a, $b)
{
return $a['sumTimeMs'] < $b['sumTimeMs'];
}
/**
* Print profiling report for the tracker
*
* @param \Piwik\Db $db Tracker database object (or null)
*/
public static function displayDbTrackerProfile($db = null)
{
if (is_null($db)) {
$db = Tracker::getDatabase();
}
$tableName = Common::prefixTable('log_profiling');
$all = $db->fetchAll('SELECT * FROM ' . $tableName);
if ($all === false) {
return;
}
uasort($all, 'self::maxSumMsFirst');
$infoIndexedByQuery = array();
foreach ($all as $infoQuery) {
$query = $infoQuery['query'];
$count = $infoQuery['count'];
$sum_time_ms = $infoQuery['sum_time_ms'];
$infoIndexedByQuery[$query] = array('count' => $count, 'sumTimeMs' => $sum_time_ms);
}
self::getSqlProfilingQueryBreakdownOutput($infoIndexedByQuery);
}
/**
* Print number of queries and elapsed time
*/
public static function printQueryCount()
{
$totalTime = self::getDbElapsedSecs();
$queryCount = Profiler::getQueryCount();
if ($queryCount > 0) {
Log::debug(sprintf("Total queries = %d (total sql time = %.2fs)", $queryCount, $totalTime));
}
}
/**
* Get total elapsed time (in seconds)
*
* @return int elapsed time
*/
public static function getDbElapsedSecs()
{
$profiler = Db::get()->getProfiler();
return $profiler->getTotalElapsedSecs();
}
/**
* Get total number of queries
*
* @return int number of queries
*/
public static function getQueryCount()
{
$profiler = Db::get()->getProfiler();
return $profiler->getTotalNumQueries();
}
/**
* Log a breakdown by query
*
* @param array $infoIndexedByQuery
*/
private static function getSqlProfilingQueryBreakdownOutput($infoIndexedByQuery)
{
$output = '<hr /><strong>Breakdown by query</strong><br/>';
foreach ($infoIndexedByQuery as $query => $queryInfo) {
$timeMs = round($queryInfo['sumTimeMs'], 1);
$count = $queryInfo['count'];
$avgTimeString = '';
if ($count > 1) {
$avgTimeMs = $timeMs / $count;
$avgTimeString = " (average = <b>" . round($avgTimeMs, 1) . "ms</b>)";
}
$query = preg_replace('/([\t\n\r ]+)/', ' ', $query);
$output .= "Executed <b>$count</b> time" . ($count == 1 ? '' : 's') . " in <b>" . $timeMs . "ms</b> $avgTimeString <pre>\t$query</pre>";
}
Log::debug($output);
}
/**
* Initializes Profiling via XHProf.
* See: https://github.com/piwik/piwik/blob/master/tests/README.xhprof.md
*/
public static function setupProfilerXHProf($mainRun = false, $setupDuringTracking = false)
{
if (!$setupDuringTracking
&& SettingsServer::isTrackerApiRequest()
) {
// do not profile Tracker
return;
}
if (self::$isXhprofSetup) {
return;
}
$xhProfPath = PIWIK_INCLUDE_PATH . '/vendor/facebook/xhprof/extension/modules/xhprof.so';
if (!file_exists($xhProfPath)) {
throw new Exception("Cannot find xhprof, run 'composer install --dev' and build the extension.");
}
if (!function_exists('xhprof_enable')) {
throw new Exception("Cannot find xhprof_enable, make sure to add 'extension=$xhProfPath' to your php.ini.");
}
$outputDir = ini_get("xhprof.output_dir");
if (empty($outputDir)) {
throw new Exception("The profiler output dir is not set. Add 'xhprof.output_dir=...' to your php.ini.");
}
if (!is_writable($outputDir)) {
throw new Exception("The profiler output dir '" . ini_get("xhprof.output_dir") . "' should exist and be writable.");
}
if (!function_exists('xhprof_error')) {
function xhprof_error($out) {
echo substr($out, 0, 300) . '...';
}
}
$currentGitBranch = SettingsPiwik::getCurrentGitBranch();
$profilerNamespace = "piwik";
if ($currentGitBranch != 'master') {
$profilerNamespace .= "." . $currentGitBranch;
}
xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);
$baseUrlStored = "";
if ($mainRun) {
self::setProfilingRunIds(array());
$baseUrlStored = SettingsPiwik::getPiwikUrl();
}
register_shutdown_function(function () use($profilerNamespace, $mainRun, $baseUrlStored) {
$xhprofData = xhprof_disable();
$xhprofRuns = new XHProfRuns_Default();
$runId = $xhprofRuns->save_run($xhprofData, $profilerNamespace);
if (empty($runId)) {
die('could not write profiler run');
}
$runs = Profiler::getProfilingRunIds();
array_unshift($runs, $runId);
if ($mainRun) {
Profiler::aggregateXhprofRuns($runs, $profilerNamespace, $saveTo = $runId);
$out = "\n\n";
$baseUrl = "http://" . @$_SERVER['HTTP_HOST'] . "/" . @$_SERVER['REQUEST_URI'];
if (strlen($baseUrlStored) > strlen($baseUrl)) {
$baseUrl = $baseUrlStored;
}
$baseUrl = $baseUrlStored . "vendor/facebook/xhprof/xhprof_html/?source=$profilerNamespace&run=$runId";
$out .= "Profiler report is available at:\n";
$out .= $baseUrl;
$out .= "\n\n";
echo $out;
} else {
Profiler::setProfilingRunIds($runs);
}
});
self::$isXhprofSetup = true;
}
/**
* Aggregates xhprof runs w/o normalizing (xhprof_aggregate_runs will always average data which
* does not fit Piwik's use case).
*/
public static function aggregateXhprofRuns($runIds, $profilerNamespace, $saveToRunId)
{
$xhprofRuns = new XHProfRuns_Default();
$aggregatedData = array();
foreach ($runIds as $runId) {
$xhprofRunData = $xhprofRuns->get_run($runId, $profilerNamespace, $description);
foreach ($xhprofRunData as $key => $data) {
if (empty($aggregatedData[$key])) {
$aggregatedData[$key] = $data;
} else {
// don't aggregate main() metrics since only the super run has the correct metrics for the entire run
if ($key == "main()") {
continue;
}
$aggregatedData[$key]["ct"] += $data["ct"]; // call count
$aggregatedData[$key]["wt"] += $data["wt"]; // incl. wall time
$aggregatedData[$key]["cpu"] += $data["cpu"]; // cpu time
$aggregatedData[$key]["mu"] += $data["mu"]; // memory usage
$aggregatedData[$key]["pmu"] = max($aggregatedData[$key]["pmu"], $data["pmu"]); // peak mem usage
}
}
}
$xhprofRuns->save_run($aggregatedData, $profilerNamespace, $saveToRunId);
}
public static function setProfilingRunIds($ids)
{
file_put_contents( self::getPathToXHProfRunIds(), json_encode($ids) );
@chmod(self::getPathToXHProfRunIds(), 0777);
}
public static function getProfilingRunIds()
{
$runIds = file_get_contents( self::getPathToXHProfRunIds() );
$array = json_decode($runIds, $assoc = true);
if (!is_array($array)) {
$array = array();
}
return $array;
}
/**
* @return string
*/
private static function getPathToXHProfRunIds()
{
return PIWIK_INCLUDE_PATH . '/tmp/cache/tests-xhprof-runs';
}
}