FC4 and xen0 performance

Felipe Alfaro Solana lkml at mac.com
Tue Apr 5 21:56:48 UTC 2005


On 5 Apr 2005, at 20:53, Jeffrey Buell wrote:

> I installed FC4 test1 and xen0 straight from Fedora and ran some simple
> kernel microbenchmarks (loops over getpid, fork/wait, signal, etc.) 
> and the
> 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
> comment on how FC4 and xen0 were built. debug? asserts? One difference
> between FC4 and xen0 is that FC4 was configured with HIGHMEM and xen0 
> wasn't.

Did you moved /lib/tls to /lib/tls.disabled?




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