[lkml]   [2009]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[RFC][PATCH v2 0/8] vmscan: AIM7 scalability improvement
Larry Woodman reported current VM has big performance regression when
AIM7 benchmark. It use very much processes and fork/exit/page-fault frequently.
(i.e. it makes serious lock contention of ptelock and anon_vma-lock.)

At 2.6.28, we removed calc_reclaim_mapped() and it made vmscan, then
vmscan always call page_referenced() although VM pressure is low.
It increased lock contention more, unfortunately.

Larry, can you please try this patch series on your big box?

 \ /
  Last update: 2009-12-10 08:31    [W:0.059 / U:4.100 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site