FC4 test (x86_64) poor performance

[Vlad]

lastly, if it will make someones choice of the platform easier:
same test.php on P4-3Ghz-1Gb, FC3-386 shows 540 RPS - comparable to
Athlon 3000+ results on FC3 i386, but noticeably lesser than what same
Athlon shows in 64 environment.

On 5/29/05, Vlad <marchenko at gmail.com> wrote:
> I forgot to mention -m64 flag that I also used.
> 
> On 5/29/05, Vlad <marchenko at gmail.com> wrote:
> > 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
> >
> 
> 
> --
> 
> Vlad
> 


-- 

Vlad