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xen-devel
Re: [Xen-devel] horrible nfs server performance on domU
Rik van Riel wrote:
On Fri, 4 Mar 2005, Tupshin Harper wrote:
the "fileserver" domU has 256Mb allocated with 512MB of swap. I'm gettin
horrendous nfs performance (samba not really tested yet), and the fileserver
domU frequently is pegged at 99+% system cpu all being use by pdflush. The
swap is active but is not being used.
Time to try out whether profiling works in domU, so we can
figure out exactly where cpu time is being spent. I'm willing
to help you debug this problem.
Great. Let me know of anything I can try. I'm happy to build custom
kernels, try experimental patches, etc. I've never done any kernel
profiling, but I'm happy to give it a shot. If you are referring to
CONFIG_OPROFILE, then it seems that it's not selectable in a xen kernel atm
-Tupshin
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