Messages in this thread | | | Date | Wed, 19 Nov 2008 21:14:44 +0100 | From | Ingo Molnar <> | Subject | Re: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 |
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* Christoph Lameter <cl@linux-foundation.org> wrote:
> On Mon, 17 Nov 2008, Ingo Molnar wrote: > > > Christoph, as per the recent analysis of Mike: > > > > http://fixunix.com/kernel/556867-regression-benchmark-throughput-loss-a622cf6-f7160c7-pull.html > > > > all scheduler components of this regression have been eliminated. > > > > In fact his numbers show that scheduler speedups since 2.6.22 have > > offset and hidden most other sources of tbench regression. (i.e. the > > scheduler portion got 5% faster, hence it was able to offset a > > slowdown of 5% in other areas of the kernel that tbench triggers) > > Ok will rerun the tests tomorrow. Just got back from SC08 need some > time to catch up. > > Looks like a lot of work was done on this issue. Thanks!
You might also want to try net-next:
[remote "net-next"] url = git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6.git fetch = +refs/heads/*:refs/remotes/net-next/*
Some good stuff is in there too, impacting this workload.
Ingo
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