On Wed, 30 Aug 2000, Matt Sergeant wrote:
> On Wed, 30 Aug 2000, Stas Bekman wrote:
>
> > On Wed, 30 Aug 2000, Matt Sergeant wrote:
> >
> > > On Wed, 30 Aug 2000, Douglas Wilson wrote:
> > >
> > > > Forgive me if this is a stupid question, but I am rather
> > > > ignorant in regards to mod_perl, and I'm curious about
> > > > something.
> > > >
> > > > If you reload modules, does that increase the size of the
> > > > forked children of the parent process? Or does just the
> > > > parent reload, with the children having to die and respawn?
> > >
> > > It increases the size - you lose shared memory. But only on modules that
> > > actually get reloaded.
> > >
> > > > Or do we care? :)
> >
> > We care a lot.
> > http://perl.apache.org/guide/performance.html#Sharing_Memory
> >
> > But only in production. This module is used mostly for the development.
>
> This module is actually designed so that it makes reasonable sense in
> production too. The touch file thing makes sure that you can update
> modules and make them live before you have scheduled downtime. I think
> that's very useful for a live server, even if it does use a bit more RAM.
But adds an additional stat() call for each request, which might be not
desired for "some" sites... I know it's quite fast. See:
http://thingy.kcilink.com/modperlguide/performance/Reducing_the_Number_of_stat_Ca.html
But, yeah it's cool!
-- performance psycho :)
>
> --
> <Matt/>
>
> Fastnet Software Ltd. High Performance Web Specialists
> Providing mod_perl, XML, Sybase and Oracle solutions
> Email for training and consultancy availability.
> http://sergeant.org | AxKit: http://axkit.org
>
>
_____________________________________________________________________
Stas Bekman JAm_pH -- Just Another mod_perl Hacker
http://stason.org/ mod_perl Guide http://perl.apache.org/guide
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