Re: [PHP-DEV] Memory persistence with apache question

[Mike Leddy]

Unfortunately I can't ask my clients to upgrade to a CVS version -
v1.3.2 isn't available yet :-(

But more generally wouldn't it be nice if PHP could GUARANTEE that
memory resources are recovered on script termination ?

Lot's of scripts are written without proper consideration for memory -
and ISPs suffer because of it.

I use apache that forks children so I can sidestep the issue with
MaxRequestsPerChild  (at a performance hit for other clients)... 

What it I was using a threading model in apache 2.0 ? 

Mike

On Mon, 2002-11-18 at 22:52, Marcus Börger wrote:
> Problems that could arise:
> The sytem tries to open images and does not unset the variables...and
> such.
> I guess when everything is working you cannot do anything against. If
> you want 
> to investigate more you would need a debug version from php to verify
> if all
> memory is freed.
> 
> But this is the post from the developer who is assigned to the bug on
> Sourceforge:
> 
> >Date: 2002-10-23 17:59
> >Sender: bharat
> >Logged In: YES 
> >user_id=42211
> >
> >This is fixed in v1.3.2
> 
> marcus
> 
> At 04:33 19.11.2002, Mike Leddy wrote:
> > Hello,
> > 
> > I administer a linux 2.4.19/apache 1.3.26/php 4.1.2 server in an
> > ISP.  
> > 
> > Recently some clients started using a gallery php script:
> > http://gallery.sf.net
> > 
> > that causes excessive memory utilization on the server:
> > 
>http://sourceforge.net/tracker/index.php?func=detail&aid=498028&group_id=7130&atid=107130
> > So here goes the question:
> > 
> > In what situations will memory allocated to a script remain with the
> > apache process after the script has terminated ?
> > 
> > I always thought that memory allocated would be released on script
> > termination - Am I wrong in this assumption ? 
> > 
> > Could it be that the heap in the apache process stays at the
> > maximally
> > used level ?
> > 
> > Thanks for any pointers or how I should approach resolving this
> > problem.
> > (I am already using 'MaxRequestsPerChild 5' in apache as a stopgap
> > measure)
> > 
> > Mike
> > 
> > 
> > 
> > -- 
> > PHP Development Mailing List <http://www.php.net/>
> > To unsubscribe, visit: http://www.php.net/unsub.php
-- 
Atenciosamente

Mike Leddy,
Systems Administrator,
Braslink Network Inc., Miami, FL.
Tel +1 305 279 3232


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[PHP-DEV] Memory persistence with apache question

[Mike Leddy]

Hello,

I administer a linux 2.4.19/apache 1.3.26/php 4.1.2 server in an ISP.  

Recently some clients started using a gallery php script:
http://gallery.sf.net

that causes excessive memory utilization on the server:
http://sourceforge.net/tracker/index.php?func=detail&aid=498028&group_id=7130&atid=107130
 
So here goes the question:

In what situations will memory allocated to a script remain with the
apache process after the script has terminated ?

I always thought that memory allocated would be released on script
termination - Am I wrong in this assumption ? 

Could it be that the heap in the apache process stays at the maximally
used level ?

Thanks for any pointers or how I should approach resolving this problem.
(I am already using 'MaxRequestsPerChild 5' in apache as a stopgap
measure)

Mike



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