[RCD] Revisiting ancient issue - Apache2 100% CPU when competing for UW-IMAP

Rimas Kudelis rq at akl.lt
Tue Sep 28 14:42:00 CEST 2010


  2010.09.28 15:15, David Harris rašė:
>
> On Sep 28, 2010, at 7:10 AM, Rimas Kudelis wrote:
>> The thing is: if I restart Apache, I lose the dead process, and the time
>> it appears next time will be rather unpredictable. Is there perhaps
>> anything possible that doesn't involve apache restarts?
>
>
> You could always strace the process to see what system calls it is 
> running, or connect with gdb and see what function it is in. For gdb 
> you'll want to have apache and PHP compiled with debugging symbols. 
> This will show you where it is running inside of the C code of Apache 
> and PHP, which will be different from where you are in the PHP code of 
> roundcube. You may be able to poke around and find some clues about 
> where you are in roundcube. It's a start.

hm, I downloaded the debug symbols and ran gdb. Now what? I ran a lot of 
step's, but all I see are zend_* filenames...

By the way, strace just attaches to the process, but doesn't output 
anything...

Rimas

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