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