[opensuse-kernel] CFS patch for kernel 2.6.22
Hello! Recently I was made aware of the fact that Ingo Molnar released a patch which brings CFS to earlier kernel versions including 2.6.22. Since anecdotal evidence strongly suggests that the new scheduler performs better for various desktop related workloads I would like to ask if it is still possible to merge this patch with the current 10.3 kernel. Since stability is probably a concern of the kernel release team I'd like to mention that I've read reports that no severe issues have arisen with CFS for several months now. Link to patches: http://people.redhat.com/mingo/cfs-scheduler/ With best regards, Erunno -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-kernel+help@opensuse.org
On Fri, Aug 24, 2007 at 07:29:38PM +0200, Erunno wrote:
Recently I was made aware of the fact that Ingo Molnar released a patch which brings CFS to earlier kernel versions including 2.6.22. Since anecdotal evidence strongly suggests that the new scheduler performs
My impression was that it wasn't that strong, but ok. In fact it is extremly hard to get desktop numbers because there are very few benchmarks and humans are generally untrustworthy in measuring schedulers.
better for various desktop related workloads I would like to ask if it
It also has serious performance regressions in some benchmarks. We're probably better off letting it cook longer. Besides it's too late now anyways. But you'll likely not notice too much difference anyways. I suspect the per task / per device dirty patches in -mm* would probably make much more user visible desktop difference, but they're unfortunately also not cooked enough to consider (and even if they were it again would be too late) -Andi -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-kernel+help@opensuse.org
On Fri, Aug 24, 2007 at 07:29:38PM +0200, Erunno wrote:
Hello!
Recently I was made aware of the fact that Ingo Molnar released a patch which brings CFS to earlier kernel versions including 2.6.22. Since anecdotal evidence strongly suggests that the new scheduler performs better for various desktop related workloads I would like to ask if it is still possible to merge this patch with the current 10.3 kernel. Since stability is probably a concern of the kernel release team I'd like to mention that I've read reports that no severe issues have arisen with CFS for several months now.
Sorry, but no, but adding such a major change, so late in the Beta release process, is not a good idea at all. If you really want to use the CFS-enabled kernel, try using one of the kernels in the build system that tracks the upstream kernel.org versions, they automatically have it in them. thanks, greg k-h -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-kernel+help@opensuse.org
participants (3)
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Andi Kleen -
Erunno -
Greg KH