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@xxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>