[users@httpd] Apache child heap size grew to 230 MB

[Qingshan Xie <xi...@yahoo.com>]

Hello, 

I have an Apache-2.0.52 installed on a Solaris 8 host.
 It is configured to be a worker MPM.  Usually Apache
child's RSS is around ~14 MB.  However sometimes it
grew to ~230 MB.  after run the command
"/usr/proc/bin/pmap pid#", it prompted that, the heap
size of the child is around 230 M.
......
00084000 229072K read/write/exec     [ heap ]
......

After that, the child never released its heap or the
memory it holds.  I suspect there is a memory leak but
not sure how to trace it.  

Could some one shed some light on it? 
Appreciate!
Q.Xie


	
		
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Re: [users@httpd] Apache child heap size grew to 230 MB

[Joshua Slive <js...@gmail.com>]

On 9/13/05, Qingshan Xie <xi...@yahoo.com> wrote:
> I have an Apache-2.0.52 installed on a Solaris 8 host.
>  It is configured to be a worker MPM.  Usually Apache
> child's RSS is around ~14 MB.  However sometimes it
> grew to ~230 MB.  after run the command
> "/usr/proc/bin/pmap pid#", it prompted that, the heap
> size of the child is around 230 M.
> ......
> 00084000 229072K read/write/exec     [ heap ]
> ......
> 
> After that, the child never released its heap or the
> memory it holds.  I suspect there is a memory leak but
> not sure how to trace it.

This is essentially the same problem as the one I just responded to
for win32.  The answer is the same: figure out what requests are
causing problems by tracking memory usage per process over time and
correlating that with the access_log or server-status display.

Joshua.

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