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FastCGI problems (apache 2.2, php 5.1, suexec)
Posted by Xia, 12-17-2008, 01:05 PM FastCGI problems (apache 2.2, php 5.1, suexec) I have just switched from mod_php to fastcgi + suexec, but now trying to use the ab command times out : Quote: ab -n 10000 -c 100 http://www.example.com/ This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0 Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright 2006 The Apache Software Foundation, http://www.apache.org/ Benchmarking www.example.com (be patient) Completed 1000 requests Completed 2000 requests Completed 3000 requests Completed 4000 requests Completed 5000 requests Completed 6000 requests Completed 7000 requests apr_poll: The timeout specified has expired (70007) Total of 7422 requests completed Then I get a bunch of emails from LFD Quote: Onderwerp: lfd on server.example.com: Excessive processes running under user example Time: Wed Dec 17 05:08:48 2008 -0600 Account: example Process Count: 61 (Not killed) Process Information: User:example PID:4515 Run Time:51(secs) Memory:181096(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4516 Run Time:51(secs) Memory:181096(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4517 Run Time:51(secs) Memory:181084(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4518 Run Time:51(secs) Memory:181092(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4523 Run Time:50(secs) Memory:181084(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4524 Run Time:50(secs) Memory:181096(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4525 Run Time:50(secs) Memory:181092(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4526 Run Time:50(secs) Memory:181084(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4527 Run Time:50(secs) Memory:181084(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4528 Run Time:50(secs) Memory:181088(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi User:example PID:4540 Run Time:50(secs) Memory:181092(kb) exe:/usr/bin/php-cgi cmd:/usr/bin/php-cgi (and about 50 more such lines) Also a ton of these emais: Quote: Onderwerp: lfd on server.example.com: Excessive resource usage: example (8269) Time: Wed Dec 17 05:09:58 2008 -0600 Account: example Resource: Virtual Memory Size Exceeded: 176 > 100 (MB) Executable: /usr/bin/php-cgi Command Line: /usr/bin/php-cgi PID: 8269 Killed: No So what's going on here? Any ideas? I knew fastcgi would use more memory.. but this? I then made some changes to the wrapper, and removed PHP_FCGI_CHILDREN as some people said that it is bad to use it? Well, I do get less timeouts now, they happen every few times I try the ab command though. Here is an ab that succeeded: Quote: [root@server ~]# ab -n 10000 -c 100 http://www.example.com/ This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0 Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright 2006 The Apache Software Foundation, http://www.apache.org/ Benchmarking www.example.com (be patient) Completed 1000 requests Completed 2000 requests Completed 3000 requests Completed 4000 requests Completed 5000 requests Completed 6000 requests Completed 7000 requests Completed 8000 requests Completed 9000 requests Finished 10000 requests Server Software: Apache Server Hostname: www.example.com Server Port: 80 Document Path: / Document Length: 6724 bytes Concurrency Level: 100 Time taken for tests: 51.277226 seconds Complete requests: 10000 Failed requests: 20 (Connect: 0, Length: 20, Exceptions: 0) Write errors: 0 Non-2xx responses: 20 Total transferred: 69465480 bytes HTML transferred: 67116200 bytes Requests per second: 195.02 [#/sec] (mean) Time per request: 512.772 [ms] (mean) Time per request: 5.128 [ms] (mean, across all concurrent requests) Transfer rate: 1322.95 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.4 0 7 Processing: 0 489 4464.7 0 51032 Waiting: 0 489 4464.7 0 51032 Total: 0 489 4464.7 0 51032 Percentage of the requests served within a particular time (ms) 50% 0 66% 0 75% 17 80% 18 90% 32 95% 37 98% 67 99% 13000 100% 51032 (longest request) See 99 and 100%, why are those taking so long in comparison to the rest? Is it normal that this stuff is so high and so much during an ab test: Quote: Real memory: 3.86 GB total / 1.70 GB free Swap space: 8 GB total / 7.98 GB free 18024 apache 866880 kB /usr/sbin/httpd.worker <--- 896MB ?... 17872 apache 801488 kB /usr/sbin/httpd.worker 17838 apache 801340 kB /usr/sbin/httpd.worker 2669 mysql 419436 kB /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-f ... 18166 apache 409768 kB /usr/sbin/httpd.worker 18164 apache 409756 kB /usr/sbin/httpd.worker 3141 root 240748 kB /usr/bin/python -tt /usr/sbin/yum-updatesd 7528 example 223900 kB /usr/bin/php-cgi <--- 223MB per php-cgi process? (well is this some sort of virtual memory since obviously it can't be really all that big) 7520 example 223068 kB /usr/bin/php-cgi 8203 example 215388 kB /usr/bin/php-cgi 8653 example 215388 kB /usr/bin/php-cgi 9550 example 215388 kB /usr/bin/php-cgi 10357 example 215388 kB /usr/bin/php-cgi 10446 example 215388 kB /usr/bin/php-cgi 10895 example 215388 kB /usr/bin/php-cgi 11078 example 215388 kB /usr/bin/php-cgi 11440 example 215388 kB /usr/bin/php-cgi 11702 example 215388 kB /usr/bin/php-cgi 11956 example 215388 kB /usr/bin/php-cgi 12743 example 215388 kB /usr/bin/php-cgi 13009 example 215388 kB /usr/bin/php-cgi 13532 example 215388 kB /usr/bin/php-cgi 13928 example 215388 kB /usr/bin/php-cgi 14436 example 215388 kB /usr/bin/php-cgi 8296 example 215384 kB /usr/bin/php-cgi 8566 example 215384 kB /usr/bin/php-cgi 8739 example 215384 kB /usr/bin/php-cgi 9730 example 215384 kB /usr/bin/php-cgi 10990 example 215384 kB /usr/bin/php-cgi 11746 example 215384 kB /usr/bin/php-cgi 11831 example 215384 kB /usr/bin/php-cgi 12219 example 215384 kB /usr/bin/php-cgi 13100 example 215384 kB /usr/bin/php-cgi 13187 example 215384 kB /usr/bin/php-cgi 13449 example 215384 kB /usr/bin/php-cgi 14095 example 215384 kB /usr/bin/php-cgi 15038 example 215384 kB /usr/bin/php-cgi 15380 example 215384 kB /usr/bin/php-cgi 7684 example 215380 kB /usr/bin/php-cgi 7686 example 215380 kB /usr/bin/php-cgi 7795 example 215380 kB /usr/bin/php-cgi 9188 example 215380 kB /usr/bin/php-cgi 9818 example 215380 kB /usr/bin/php-cgi 9993 example 215380 kB /usr/bin/php-cgi 10626 example 215380 kB /usr/bin/php-cgi 10709 example 215380 kB /usr/bin/php-cgi 11350 example 215380 kB /usr/bin/php-cgi 12306 example 215380 kB /usr/bin/php-cgi 12656 example 215380 kB /usr/bin/php-cgi 13204 example 215380 kB /usr/bin/php-cgi 13838 example 215380 kB /usr/bin/php-cgi 14011 example 215380 kB /usr/bin/php-cgi 14525 example 215380 kB /usr/bin/php-cgi 14859 example 215380 kB /usr/bin/php-cgi 15036 example 215380 kB /usr/bin/php-cgi 15296 example 215380 kB /usr/bin/php-cgi 12044 example 215376 kB /usr/bin/php-cgi 13360 example 215376 kB /usr/bin/php-cgi 7687 example 215264 kB /usr/bin/php-cgi 7690 example 215264 kB /usr/bin/php-cgi 8162 example 215264 kB /usr/bin/php-cgi 9006 example 215264 kB /usr/bin/php-cgi 9371 example 215264 kB /usr/bin/php-cgi 9462 example 215264 kB /usr/bin/php-cgi 10084 example 215264 kB /usr/bin/php-cgi 11612 example 215264 kB /usr/bin/php-cgi 12389 example 215264 kB /usr/bin/php-cgi 12831 example 215264 kB /usr/bin/php-cgi 12920 example 215264 kB /usr/bin/php-cgi 13667 example 215264 kB /usr/bin/php-cgi 14246 example 215264 kB /usr/bin/php-cgi 7691 example 215260 kB /usr/bin/php-cgi 7692 example 215260 kB /usr/bin/php-cgi 7694 example 215260 kB /usr/bin/php-cgi 8833 example 215260 kB /usr/bin/php-cgi 10267 example 215260 kB /usr/bin/php-cgi 11265 example 215260 kB /usr/bin/php-cgi 14260 example 215260 kB /usr/bin/php-cgi 14703 example 215260 kB /usr/bin/php-cgi 15129 example 215260 kB /usr/bin/php-cgi 7685 example 215256 kB /usr/bin/php-cgi 7693 example 215256 kB /usr/bin/php-cgi 7981 example 215256 kB /usr/bin/php-cgi 8070 example 215256 kB /usr/bin/php-cgi 8474 example 215256 kB /usr/bin/php-cgi 8920 example 215256 kB /usr/bin/php-cgi 9098 example 215256 kB /usr/bin/php-cgi 9277 example 215256 kB /usr/bin/php-cgi 10171 example 215256 kB /usr/bin/php-cgi 12484 example 215256 kB /usr/bin/php-cgi 12514 example 215256 kB /usr/bin/php-cgi 13755 example 215256 kB /usr/bin/php-cgi 14349 example 215256 kB /usr/bin/php-cgi 14611 example 215256 kB /usr/bin/php-cgi 14946 example 215256 kB /usr/bin/php-cgi 7688 example 215252 kB /usr/bin/php-cgi 7888 example 215252 kB /usr/bin/php-cgi 8386 example 215252 kB /usr/bin/php-cgi 9640 example 215252 kB /usr/bin/php-cgi 9907 example 215252 kB /usr/bin/php-cgi 10532 example 215252 kB /usr/bin/php-cgi 10806 example 215252 kB /usr/bin/php-cgi 11173 example 215252 kB /usr/bin/php-cgi 11526 example 215252 kB /usr/bin/php-cgi 12134 example 215252 kB /usr/bin/php-cgi 13547 example 215252 kB /usr/bin/php-cgi 15467 example 215252 kB /usr/bin/php-cgi 6842 apache 128268 kB /usr/sbin/httpd.worker 5778 root 128232 kB /usr/sbin/httpd.worker <-- is this normal (root) ? These stay loaded even after the ab has finished running. (hours later, still there) This was a server that had 300MB ram in use when using mod_php.. After checking the error log, these are the errors i found: in /home/example/logs/error_log Quote: [Wed Dec 17 10:29:57 2008] [warn] (104)Connection reset by peer: mod_fcgid: read data from fastcgi server error. [Wed Dec 17 10:29:57 2008] [error] [client 69.65.x.x] Premature end of script headers: index.php (multiple times) in /var/log/httpd/error_log Quote: [Wed Dec 17 10:30:01 2008] [notice] mod_fcgid: call /home/example/public_html/index.php with wrapper /home/example/fcgi-bin/php5.fcgi [Wed Dec 17 10:30:10 2008] [notice] mod_fcgid: process /home/example/public_html/index.php(7693) exit(normal exit), terminated by calling exit(), return code: 0 (multiple times) Quote: [Wed Dec 17 10:30:10 2008] [warn] mod_fcgid: cleanup zombie process 7693 Here are my config files: My fcgi wrapper: Code: #!/bin/sh PHPRC=$PWD/../etc/php5 export PHPRC umask 022 SCRIPT_FILENAME=$PATH_TRANSLATED export SCRIPT_FILENAME exec /usr/bin/php-cgi fcgid.conf (apache) Code: AddHandler fcgid-script .php # Sane place to put sockets and shared memory file SocketPath run/mod_fcgid SharememPath run/fcgid_shm IdleTimeout 3600 ProcessLifeTime 7200 IPCConnectTimeout 30 IPCCommTimeout 45 MaxRequestsPerProcess 500 Virtualhost: Code: SuexecUserGroup example example ... AddHandler fcgid-script .php FCGIWrapper /home/example/fcgi-bin/php5.fcgi .php ... Any help is appreciated, thanks.
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