Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:48848 Return-Path: Mailing-List: contact internals-help@lists.php.net; run by ezmlm Delivered-To: mailing list internals@lists.php.net Received: (qmail 57703 invoked from network); 20 Jun 2010 10:06:30 -0000 Received: from unknown (HELO lists.php.net) (127.0.0.1) by localhost with SMTP; 20 Jun 2010 10:06:30 -0000 Authentication-Results: pb1.pair.com smtp.mail=php-dev.list@daevel.fr; spf=pass; sender-id=pass Authentication-Results: pb1.pair.com header.from=php-dev.list@daevel.fr; sender-id=pass Received-SPF: pass (pb1.pair.com: domain daevel.fr designates 188.165.152.122 as permitted sender) X-PHP-List-Original-Sender: php-dev.list@daevel.fr X-Host-Fingerprint: 188.165.152.122 licorne.daevel.fr Linux 2.6 Received: from [188.165.152.122] ([188.165.152.122:44038] helo=licorne.daevel.fr) by pb1.pair.com (ecelerity 2.1.1.9-wez r(12769M)) with ESMTP id 5A/83-21297-528ED1C4 for ; Sun, 20 Jun 2010 06:06:30 -0400 Received: from luuna.daevel.fr ([82.67.25.170] helo=[192.168.1.50]) by licorne.daevel.fr with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1OQHQB-0006zG-SU for internals@lists.php.net; Sun, 20 Jun 2010 12:06:36 +0200 Message-ID: <4C1DE819.2070406@daevel.fr> Date: Sun, 20 Jun 2010 12:06:17 +0200 User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100515 Icedove/3.0.4 MIME-Version: 1.0 To: internals@lists.php.net References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: [PHP-DEV] Performance problem with php From: php-dev.list@daevel.fr ("Olivier B.") Hi, are you using the "suhosin" patch for PHP ? I can see the same lstat behaviour with my setups, because of suhosin. But for the 8 tentative of reading, are you sure php deliver only one page here ? Olivier Le 20/06/2010 08:49, Vincenzo D'Amore a écrit : > Hello, > > to have a performance problem with apache/mod_php5 configuration under heavy > load the website becomes too slow. > Using strace I found what appears to me a strange behavior > The strange behavior I want point out is related to a sequence of tentative > httpd/mod_php5 does in order to read an php page. > > In this particular case apache httpd servers tries 8 times before reach and > read the file (if you want I can send the complete strace output) > More strange all these tentative seems to be correctly completed because of > success (0) return code for each line. > Ffor every file should be served by apache httpd, apache httpd tries to > lstat all directory in path more times: > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs", > {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > > *FIRST TENTATIVE* > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs", > {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > > *SECOND* > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > access("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > R_OK) = 0 > > *THIRD* > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs", > {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > > *FOURTH* > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs", > {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > > *FIFTH* > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs", > {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > > *SIXTH* > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > > *SEVENTH (blocked in the middle of path scan)* > > lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 > lstat("/usr/local/sitipersonali", {st_mode=S_IFDIR|0755, st_size=4096, ...}) > = 0 > lstat("/usr/local/sitipersonali/sitipersonali08", {st_mode=S_IFDIR|0777, > st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP", {st_mode=S_IFDIR|0755, > st_size=13312, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al", > {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps", > {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451", > {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs", > {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages", > {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0 > lstat("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > > *EIGHT AND FINALLY READ THE FILE* > > open("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > O_RDONLY) = 416 > fstat(416, {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > open("/usr/local/sitipersonali/sitipersonali08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", > O_RDONLY) = 417 > fstat(417, {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0 > mmap(NULL, 1312, PROT_READ, MAP_SHARED, 417, 0) = 0x2b4a96443000 > munmap(0x2b4a96443000, 1312) = 0 > close(417) = 0 > read(416, " read(416, "", 8192) = 0 > read(416, "", 8192) = 0 > close(416) = 0 > > Could anybody explain me why I have this behavior and if it is attributable > to a misconfiguration of php? > > Best regards, > Vincenzo > >