Dave, 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. thank you. On 5/29/05, Dave Jones <davej@xxxxxxxxxx> wrote: > On Sun, May 29, 2005 at 09:32:56AM -0400, Vlad wrote: > > Hello, > > > > I've ran a series of tests on FC4 x86_64 and FC3 x86_64. Found that > > the performance is quite poor under FC4 (Athlon64 on nForce 4 Ultra). > > > > 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. > > Are you running the latest rawhide ? > > Dave > > -- Vlad