Re: Incredible amount of memory allocated by Apache?

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----- Original Message -----
> On Wed, Feb 16, 2011 at 11:28 AM, Tony Mobily <merc@xxxxxxxxxxx>
> wrote:
> > Hi,
> >
> > The real question then is: how come another server running Symfony
> > gives me:
> >
> > ÂPID USER Â Â ÂPR ÂNI ÂVIRT ÂRES ÂSHR S %CPU %MEM Â ÂTIME+ ÂCOMMAND
> > 20010 apache  Â16  0 69008 Â33m Â25m S Â1.8 Â0.9  0:18.35 httpd
> > 20161 apache  Â16  0 70552 Â34m Â24m S Â0.0 Â1.0  0:12.20 httpd
> > 27109 apache  Â15  0 67868 Â30m Â23m S Â0.0 Â0.9  0:04.61 httpd
> > 25365 apache  Â15  0 67192 Â30m Â23m S Â0.0 Â0.8  0:06.80 httpd
> > 25924 apache  Â15  0 67432 Â30m Â23m S Â0.0 Â0.8  0:04.73 httpd
> > 25931 apache  Â15  0 68248 Â30m Â23m S Â0.0 Â0.9  0:05.13 httpd
> > 27112 apache  Â15  0 70808 Â33m Â23m S Â0.0 Â0.9  0:02.88 httpd
> > 27034 apache  Â15  0 68528 Â30m Â23m S Â1.3 Â0.9  0:02.94 httpd
> > 25402 apache  Â15  0 70560 Â32m Â23m S Â0.0 Â0.9  0:07.16 httpd
> > 27102 apache  Â15  0 66920 Â28m Â22m S Â0.0 Â0.8  0:03.98 httpd
> >
> > ...?
> > Is it _really_ possible? Seriously, the Symgony one is only around
> > 30Mb, and the Drupal one is *ten* times bigger?

30MB is still quite big (IMO)

> Yes
> 
> > So my real question is: what is this information? REs is Â"
> > Resident
> > size (kb): ÂThe non-swapped physical memory a task has used. RES =
> > CODE + DATA." Surely, Drupal is not 2.9Gb of code?
> 
> Probably not, it probably is leaking memory from somewhere. If you
> disassociate PHP from Apache, you'll see this much more clearly.

Take a look at http://www.xdebug.org/docs/ for debugging and profiling.
You can even send it through Valgrind. All in all you will see exactly
where you're wasting memory.


Finally: Consider Caching static exports

To quote Theo Schlossnagle: "Your dynamic content isn't as dynamic as
you think it is"

see: http://www.slideshare.net/postwait/velocity-2010-scalable-internet-architectures

(And see everything else he wrote ;)
http://omniti.com/seeds/fast-by-default and
http://lethargy.org/~jesus/writes/perform-or-die

Otherwise, if Drupal and Symphony don't support static exports,
you might take a look at one of my silly writings:
http://blag.esotericsystems.at/2010/02/introducing-more-caching/

> Cheers
> 
> Tom


i


-- 
Igor GaliÄ

Tel: +43 (0) 664 886 22 883
Mail: i.galic@xxxxxxxxxxxxxx
URL: http://brainsware.org/

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