NYCPHP Meetup

[Andrew Yochum]

Nicholas,

On Sun, Apr 30, 2006 at 01:48:45PM -0400, Nicholas Tang wrote:
> We were benchmarking our new beta setup - Apache 2, PHP 5, and APC 3 -
> and seeing absolutely terrible results.  Really, really bad.
> Atrocious.  As in, I had momentary fears we'd have to pick between a
> rewrite in PHP 4 or double the size of our webserver farm to manage
> it.
...
> Amazingly, while I did tweak some settings here and there, and we did
> nudge a few things in the code, the biggest change?  We downgraded our
> servers from Red Hat Enterprise 4 Update 3 to Update 2.  That was it.
> Approximately 90% of the difference in the two tests came from that
> one shift - a shift that should have been completely inconsequential.
...

I'm curious... What made you try downgrading from 3 to 2 to discover
this?  Are you using prefork or another MPM?  Have you compared
callgrind data when running 3 vs. 2?

Please send more details and/or updates.  I, for one, would like to hear
more.

Regards,
Andrew

-- 
Andrew Yochum
Plexpod
andrew at plexpod.com
718-360-0879