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From "Boyle Owen" <Owen.Bo...@swx.com>
Subject RE: [users@httpd] Question about strange problem when using graceful
Date Mon, 12 Nov 2007 14:41:41 GMT
> -----Original Message-----
> From: Ali Nebi [mailto:anebi@iguanait.com] 
> Sent: Monday, November 12, 2007 1:15 PM
> To: users@httpd.apache.org
> Subject: [users@httpd] Question about strange problem when 
> using graceful
> 
> Hi, 
> 
> i have a problem, i don't know if it is bug or not. Sometimes when we
> use graceful the old threads don't stop and system is going 
> to overload.
> What can i do to solve this problem ? Is it a bug?

It is likely a bug in your underlying OS.. A graceful just sends a
SIGUSR1 signal to the apache process, which is jsut supposed to make it
reload the config. But since this is really an OS operation, it is
reliant on the OS handling it well. I have seen this sort of thing
happen with some OSes (usually just stuck threads and memory leakage).

The simplest fix is to do a complete stop/start. If this is undesireable
due to load, try doing the graceful during busy times (I guess it takes
a while for the problem to get really bad) and then schedule a
stop/start for when the system is quiet.

Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored. 

> 
> After graceful in output from top i see many httpd active processes.
> 
> 
> 
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