Free memory after upgrade to 7.1

[Tom Evans]

On Wed, 2009-02-04 at 18:42 +0100, Tomas Randa wrote:
> Yes, I do portupgrade -Rrfia after upgrade of course.
> I don`t think it is some "new" PHP bug, because my friend have same 
> problem with memory and he do not upgraded ports. But his box do not 
> free memory after apache reload, my yes
> 
> Any other suggestions ?
> 
> Thanks TR
> 
> 
> 
> Tom Evans napsal(a):
> > On Wed, 2009-02-04 at 17:08 +0100, Tomas Randa wrote:
> >   
> >> Hello,
> >>
> >> I have i386/PAE system (php, apache22, mysql) running on 7-STABLE and I 
> >> can see strange behavior after upgrade from 7.0: Apache does not free 
> >> memory, for example:
> >>
> >> CPU: 31.2% user, 0.0% nice, 12.8% system, 0.7% interrupt, 55.3% idle
> >> Mem: 3520M Active, 3705M Inact, 465M Wired, 314M Cache, 112M Buf, 12M Free
> >> Swap: 4096M Total, 105M Used, 3991M Free, 2% Inuse
> >>
> >> then apachectl graceful
> >>
> >> CPU: 28.3% user, 0.0% nice, 8.6% system, 0.0% interrupt, 63.1% idle
> >> Mem: 631M Active, 3126M Inact, 353M Wired, 213M Cache, 112M Buf, 3693M Free
> >> Swap: 4096M Total, 1844K Used, 4094M Free
> >>
> >> Some graph: http://max.af.czu.cz/memoryload.png
> >>
> >> I know before upgrade was memory using about 2,5GB, now much more, 
> >> apache sometimes crash.
> >>
> >> Thanks for some help
> >>
> >> Tomas Randa
> >>     
> >
> > What is apache doing to use so much memory? This looks more like a
> > memory leak in PHP, which is reclaimed after apache restarts its
> > children.
> >
> > When you upgraded the OS, did you also upgrade ports? Could a new
> > version of PHP be at fault here?
> >
> > Cheers
> >
> > Tom
> >

Well, apache + its regular modules dont tend to leak memory, which is
what is happening. Can you run tests, eg by running your application on
apache with valgrind, to determine exactly where the leak occurs.

Tom