FC4 test (x86_64) poor performance

[Vlad]

ok, here is the complete details:

Athlon64 3000+ (it's +20Mhz overclocked on the bus, i.e. running on
220Mhz x 9 - roughly on par with Athlon64 3200+).
NForce Ultra (MB: tyan k8e) with 1Gig.

php 5.0.4  + 1.3.33 statically compiled with -O3 -msse3 -m3dnow
-march=athlon64 -mcpu=athlon64; (can't recall if I did unroll loops
and omit frame pointer)

no extra switches or additional modules for configure.

the test.php script looked like 

<?php
phpinfo();
phpinfo(INFO_MODULES);
?>

then tested with 
/usr/local/apache/bin/ab -c 50 -n 20000 http://localhost/test.php

FC4 x86_64, kernel is 2.6.11-1.1363_FC4 - the RPS is 730.
FC3 x86_64, latests kernel - same results.
FC3 i386, latests kernel - 570 RPS.
FreeBSD 5.4-RELEASE (x86_64, stock kernel) - 670 RPS

same hardware in all tests, same optimization switches during compilation.

On 5/29/05, Dave Jones <davej at redhat.com> wrote:
> On Sun, May 29, 2005 at 06:40:55PM -0400, Vlad wrote:
>  > > > I've compiled apache+php and measured max requests per second (rps) of
>  > > > a simple php script (output of phpinfo(); php_info(INFO_MODULES)) with
>  > > > the apache's 'ab' application. The maximum RPS I managed for FC4 is
>  > > > 440 while FC3 showed up to 730. Network is not the issue cause I did
>  > > > measurement via lo0.
>  > > >
>  > > > It's the same server and I've ran yum update before tests in both
>  > > > cases. Any ideas?
>  > >
>  > > If you are running a kernel earlier than revision 2.6.11-1.1355, it'll
>  > > have extra debugging enabled which will impact memory allocations.
>  >
>  > I did the tests several days ago; following your advise I just ran yum
>  > update and tested once again with 2.6.11-1.1363_FC4. Things are much
>  > improved now.
> 
> Great! However, don't tease :-)  I'm sure I'm not the only person
> curious what RPS you now achieve :-)
> 
>                 Dave
> 


-- 

Vlad