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Posted to modperl@perl.apache.org by Edward Moon <em...@mooned.org> on 2000/08/16 00:46:38 UTC
[OT] mod_proxy tuning info?
I'm looking for docs or white papers on tuning apache/mod_proxy for
optimum performance when acting as a reverse proxy for a web farm.
Can anyone point me to a URL or a book that's a good reference?
Thanks,
Re: [OT] mod_proxy tuning info?
Posted by Stas Bekman <st...@stason.org>.
On Tue, 15 Aug 2000, Edward Moon wrote:
> Yes, I have read that part of the mod_perl guide. I'm looking for a more
> detailed discussion on mod_proxy configuration and performance.
>
> But it doesn't answer the questions I have regarding the use of mod_proxy:
> * What affect does CacheGcInterval have on performance?
> * Does setting CacheDirLevels to a high value cause a performance hit?
> * Does setting CacheDirLength to a small value increase performance?
> * How does performance scale with 1GB, 2GB, or 4GB of memory?
> * How do you determine the overall hit rate? The hit rate from ram? The
> hit
> rate from disk?
> * There are dynamic pages I want cached for a certain TTL. There are other
> dynamic pages I don't want cached at all. Do I have to use the NoCache
> directive on all the directories/files I don't want cached? Or is there a
> more effective way to do this?
Edward,
Can you please forward me the informaition you learn about the above
items and I'll complete the missing details to the Guide?
Thanks a lot!
> On Tue, 15 Aug 2000, ___cliff rayman___ wrote:
>
> > have u read this yet?
> > http://perl.apache.org/guide/scenario.html#mod_proxy
> >
> > Edward Moon wrote:
> >
> > > I'm looking for docs or white papers on tuning apache/mod_proxy for
> > > optimum performance when acting as a reverse proxy for a web farm.
> > >
> > > Can anyone point me to a URL or a book that's a good reference?
> > >
> > > Thanks,
> >
> > --
> > ___cliff rayman___cliff@genwax.com___http://www.genwax.com/
> >
> >
>
>
_____________________________________________________________________
Stas Bekman JAm_pH -- Just Another mod_perl Hacker
http://stason.org/ mod_perl Guide http://perl.apache.org/guide
mailto:stas@stason.org http://apachetoday.com http://jazzvalley.com
http://singlesheaven.com http://perlmonth.com perl.org apache.org
Re: [OT] mod_proxy tuning info?
Posted by Perrin Harkins <pe...@primenet.com>.
Hi Ed,
> * What affect does CacheGcInterval have on performance?
You might find it useful to split GC out into a separate process,
especially if you are sharing the cache directory over NFS.
> * How does performance scale with 1GB, 2GB, or 4GB of memory?
Your filesystem performance should improve with more memory, so I would
expect mod_proxy performance to improve as a result.
> * There are dynamic pages I want cached for a certain TTL. There are other
> dynamic pages I don't want cached at all. Do I have to use the NoCache
> directive on all the directories/files I don't want cached? Or is there a
> more effective way to do this?
You can do it with Expires headers. Make sure you send Last-Modified or
the pages won't get cached. If you don't want the rest of the world to
get your Expires headers, you'll have to modify mod_proxy to remove them.
- Perrin
Re: [OT] mod_proxy tuning info?
Posted by Edward Moon <em...@mooned.org>.
Yes, I have read that part of the mod_perl guide. I'm looking for a more
detailed discussion on mod_proxy configuration and performance.
But it doesn't answer the questions I have regarding the use of mod_proxy:
* What affect does CacheGcInterval have on performance?
* Does setting CacheDirLevels to a high value cause a performance hit?
* Does setting CacheDirLength to a small value increase performance?
* How does performance scale with 1GB, 2GB, or 4GB of memory?
* How do you determine the overall hit rate? The hit rate from ram? The
hit
rate from disk?
* There are dynamic pages I want cached for a certain TTL. There are other
dynamic pages I don't want cached at all. Do I have to use the NoCache
directive on all the directories/files I don't want cached? Or is there a
more effective way to do this?
On Tue, 15 Aug 2000, ___cliff rayman___ wrote:
> have u read this yet?
> http://perl.apache.org/guide/scenario.html#mod_proxy
>
> Edward Moon wrote:
>
> > I'm looking for docs or white papers on tuning apache/mod_proxy for
> > optimum performance when acting as a reverse proxy for a web farm.
> >
> > Can anyone point me to a URL or a book that's a good reference?
> >
> > Thanks,
>
> --
> ___cliff rayman___cliff@genwax.com___http://www.genwax.com/
>
>
Re: [OT] mod_proxy tuning info?
Posted by ___cliff rayman___ <cl...@genwax.com>.
have u read this yet?
http://perl.apache.org/guide/scenario.html#mod_proxy
Edward Moon wrote:
> I'm looking for docs or white papers on tuning apache/mod_proxy for
> optimum performance when acting as a reverse proxy for a web farm.
>
> Can anyone point me to a URL or a book that's a good reference?
>
> Thanks,
--
___cliff rayman___cliff@genwax.com___http://www.genwax.com/