Dear all,
1. I'm using Linux 2.6.16.29 and running on i686 Intel(R) Pentium(R) 4 CPU
3.00GHz GNU/Linux
2. The below info are my machine config and log output
3. Kindly advise how to resolve intermittent apache crash even after
performance tuning
*httpd.conf output
*# prefork MPM [DEFAULT IF USE=-threads]
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule prefork.c>
StartServers 2
MinSpareServers 4
MaxSpareServers 6
MaxClients 100
MaxRequestsPerChild 500
</IfModule>
# worker MPM [DEFAULT IF USE=threads]
# StartServers: initial number of server processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule worker.c>
StartServers 2
MaxClients 100
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 500
</IfModule>
*top output
*top - 00:09:00 up 157 days, 23:12, 2 users, load average: 0.67, 0.85,
0.80
Tasks: 47 total, 1 running, 46 sleeping, 0 stopped, 0 zombie
Cpu(s): 8.3% us, 1.4% sy, 0.0% ni, 88.0% id, 2.2% wa, 0.0% hi, 0.0% si
Mem: 917652k total, 858880k used, 58772k free, 142820k buffers
Swap: 1048568k total, 37844k used, 1010724k free, 434476k cached
*apache2 error log
**** glibc detected *** /usr/sbin/apache2: double free or corruption
(fasttop): 0x08b4faf0 ***
[Tue Dec 15 13:04:22 2009] [error] server reached MaxClients setting,
consider raising the MaxClients setting
*** glibc detected *** /usr/sbin/apache2: double free or corruption
(fasttop): 0x086a1170 ***
*** glibc detected *** /usr/sbin/apache2: double free or corruption
(fasttop): 0x08b48c08 ***
[Wed Dec 16 23:53:07 2009] [warn] child process 1325 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:07 2009] [warn] child process 19910 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:07 2009] [warn] child process 10569 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:07 2009] [warn] child process 16964 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:07 2009] [warn] child process 19718 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:09 2009] [warn] child process 1325 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:09 2009] [warn] child process 19910 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:09 2009] [warn] child process 10569 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:09 2009] [warn] child process 16964 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:09 2009] [warn] child process 19718 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:11 2009] [warn] child process 1325 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:11 2009] [warn] child process 19910 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:11 2009] [warn] child process 10569 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:11 2009] [warn] child process 16964 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:11 2009] [warn] child process 19718 still did not exit,
sending a SIGTERM
[Wed Dec 16 23:53:13 2009] [error] child process 1325 still did not exit,
sending a SIGKILL
[Wed Dec 16 23:53:13 2009] [error] child process 19910 still did not exit,
sending a SIGKILL
[Wed Dec 16 23:53:13 2009] [error] child process 10569 still did not exit,
sending a SIGKILL
[Wed Dec 16 23:53:13 2009] [error] child process 16964 still did not exit,
sending a SIGKILL
*Joomla / PHP / Apache
*System Information
*PHP built On:* Linux trillian 2.6.16.29-ab1-xenU #1 SMP Sat Sep 23
19:20:15 SGT 2006 i686 *Database Version:* 5.0.24a-log *PHP
Version:* 5.1.6-pl4-gentoo
*Web Server:* Apache *WebServer to PHP interface:* apache2handler
*Joomla!
Version:* Joomla! 1.0.15 Stable [ Daytime ] 22 February 2008 23:00 UTC *User
Agent:* Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.15)
Gecko/2009101601 Firefox/3.0.15 (.NET CLR 3.5.30729)
*Mysql
*mysql Ver 14.12 Distrib 5.0.24a, for pc-linux-gnu (i686) using readline
5.1
