Messages in this thread | | | Date | Fri, 25 Feb 2011 21:07:23 +0100 | From | Andrea Arcangeli <> | Subject | Re: [PATCH 0/2] Reduce the amount of time compaction disables IRQs for V2 |
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On Fri, Feb 25, 2011 at 08:04:57PM +0000, Mel Gorman wrote: > Changelog since V1 > o Fix initialisation of isolated (Andrea) > > The following two patches are aimed at reducing the amount of time IRQs are > disabled. It was reported by some ALSA people that transparent hugepages was > causing slowdowns on MIDI playback but I strongly suspect that compaction > running for smaller orders was also a factor. The theory was that IRQs > were being disabled for too long and sure enough, compaction was found to > be disabling IRQs for a long time. The patches reduce the length of time > IRQs are disabled when scanning for free pages and for pages to migrate. > > It's late in the cycle but the IRQs disabled times are sufficiently bad > that it would be desirable to have these merged for 2.6.38 if possible. > > mm/compaction.c | 35 ++++++++++++++++++++++++++++++----- > 1 files changed, 30 insertions(+), 5 deletions(-)
both patches:
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
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