[rt-users] apache 100% cpu usage

[Payam Poursaied]

Hi

Do you mean that looping email would be the source of the problem?

I haven’t seen any looped email in our system. Also I have defined all email address in $RTAddressRegexp. So I think it would prevent loop. Isn’t it?

 

From: Mathieu Longtin [mailto:mathieu at closetwork.org] 
Sent: Sunday, March 20, 2011 4:02 PM
To: Payam Poursaied
Cc: rt-users at lists.bestpractical.com
Subject: Re: [rt-users] apache 100% cpu usage

 

I found out a while ago that looping emails would cause RT to go crazy like that.

I disabled $LoopsToRTOwner and the problem disappeared. I didn't have time to debug the issue further...

--
Mathieu Longtin
1-514-803-8977



On Sun, Mar 20, 2011 at 4:19 AM, Payam Poursaied <me at payam124.com> wrote:


Hi all
We are using rt3.8.8 and we  faced with a problem using apache 1.3.42 on FreeBSD 8.0-RELEASE.
The problem is that httpd processes frequently reach 100% CPU usage and stay
at this level of CPU usage.
This is a sample of top output.

 PID USERNAME   THR PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
77051 www          1 118    0   208M 86080K CPU4    4  87.6H 100.00% httpd
 9403 www          1 118    0   215M 93340K CPU2    2  65.0H 100.00% httpd
78430 www          1 118    0   226M   100M CPU0    0  58:57 100.00% httpd

I think there might be a bug that caused something like endless loop but I
am newbie to gdb and debugging and I could not find any relevant point to
get into it.
I tried to compile apache in debug mode and then wait to see a suspicious
process and then attached GDB66 to that cpu intensive httpd process to find
out what is going on.
But I could not go further more.

I have also consulted with apache-freebsd mailing list but there wasn't any success.

Could anyone help me to drill down this problem?

Best Regards
Payam Poursaied

Using "next" says:
(gdb) next
Cannot find bounds of current function
And here below is output of "where" command in gdb66.
(gdb) where
#0  0x000000080093a73b in ?? () from /lib/libc.so.7
#1  0x000000080093d505 in ?? () from /lib/libc.so.7
#2  0x00000008009401bc in ?? () from /lib/libc.so.7
#3  0x0000000800942ec4 in malloc () from /lib/libc.so.7
#4  0x0000000803079946 in Perl_safesysmalloc () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so



 

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