From: Brion Vibber <brion@users.mediawiki.org>
Date: Thu, 20 Jan 2005 07:10:29 +0000 (+0000)
Subject: Script to benchmark squid purges
X-Git-Tag: 1.5.0alpha1~881
X-Git-Url: http://git.cyclocoop.org/%24image?a=commitdiff_plain;h=4650050806627dc545dc790246fb7669857e3468;p=lhc%2Fweb%2Fwiklou.git

Script to benchmark squid purges
---

diff --git a/maintenance/benchmarkPurge.php b/maintenance/benchmarkPurge.php
new file mode 100644
index 0000000000..bc31b9bf4b
--- /dev/null
+++ b/maintenance/benchmarkPurge.php
@@ -0,0 +1,54 @@
+<?php
+
+/* Squid purge benchmark script */
+
+require_once( "commandLine.inc" );
+
+function benchSquid( $urls, $trials = 1 ) {
+	$start = wfTime();
+	for( $i = 0; $i < $trials; $i++) {
+		SquidUpdate::purge( $urls );
+	}
+	$delta = wfTime() - $start;
+	$pertrial = $delta / $trials;
+	$pertitle = $pertrial / count( $urls );
+	return sprintf( "%4d titles in %6.2fms (%6.2fms each)",
+		count( $urls ), $pertrial * 1000.0, $pertitle * 1000.0 );
+}
+
+function randomUrlList( $length ) {
+	$list = array();
+	for( $i = 0; $i < $length; $i++ ) {
+		$list[] = randomUrl();
+	}
+	return $list;
+}
+
+function randomUrl() {
+	global $wgServer, $wgArticlePath;
+	return $wgServer . str_replace( '$1', randomTitle(), $wgArticlePath );
+}
+
+function randomTitle() {
+	$str = '';
+	$length = mt_rand( 1, 20 );
+	for( $i = 0; $i < $length; $i++ ) {
+		$str .= chr( mt_rand( ord('a'), ord('z') ) );
+	}
+	return ucfirst( $str );
+}
+
+if( !$wgUseSquid ) {
+	die( "Squid purge benchmark doesn't do much without squid support on.\n" );
+} else {
+	printf( "There are %d defined squid servers:\n", count( $wgSquidServers ) );
+	echo implode( "\n", $wgSquidServers ) . "\n";
+	$lengths = array( 1, 10, 100 );
+	foreach( $lengths as $length ) {
+		$urls = randomUrlList( $length );
+		$trial = benchSquid( $urls, 4 );
+		print "$trial\n";
+	}
+}
+
+?>