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...