On Wed, 2005-04-06 at 07:06 -0400, Alan Cox wrote: > On Tue, Apr 05, 2005 at 11:53:33AM -0700, Jeffrey Buell wrote: > > results are pretty ugly compared to a 2.6.1 install. FC4 ranges from 1.5X to > > 20X slower, while xen0 is about 2X to 6X slower. Is this expected? I'm > > looking for configuration differences now, but I'm wondering if anybody can > > The fork ones are expected yes. The newest kernels have four level page tables > and while this allows for huge 64bit systems it has a cost and there is > optimisation work left to do. > > I've not checked the kernel config options but if you look at the src.rpm you > can see what debug is enabled early test kernels usually have all debugging stuff enabled that will have a HUGE performance hit in such benchmarks. But that is why it is test1 and not the final release...
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