On Thu, Aug 09, 2012 at 08:36:12AM -0600, Jim Schutt wrote: > Hi Mel, > > On 08/09/2012 07:49 AM, Mel Gorman wrote: > >Changelog since V2 > >o Capture !MIGRATE_MOVABLE pages where possible > >o Document the treatment of MIGRATE_MOVABLE pages while capturing > >o Expand changelogs > > > >Changelog since V1 > >o Dropped kswapd related patch, basically a no-op and regresses if fixed (minchan) > >o Expanded changelogs a little > > > >Allocation success rates have been far lower since 3.4 due to commit > >[fe2c2a10: vmscan: reclaim at order 0 when compaction is enabled]. This > >commit was introduced for good reasons and it was known in advance that > >the success rates would suffer but it was justified on the grounds that > >the high allocation success rates were achieved by aggressive reclaim. > >Success rates are expected to suffer even more in 3.6 due to commit > >[7db8889a: mm: have order> 0 compaction start off where it left] which > >testing has shown to severely reduce allocation success rates under load - > >to 0% in one case. There is a proposed change to that patch in this series > >and it would be ideal if Jim Schutt could retest the workload that led to > >commit [7db8889a: mm: have order> 0 compaction start off where it left]. > > I was successful at resolving my Ceph issue on 3.6-rc1, but ran > into some other issue that isn't immediately obvious, and prevents > me from testing your patch with 3.6-rc1. Today I will apply your > patch series to 3.5 and test that way. > > Sorry for the delay. > No need to be sorry at all. I appreciate you taking the time and as there were revisions since V1 you were better off waiting even if you did not have the Ceph issue! Thanks. -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>