lkml.org 
[lkml]   [2009]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 2/3] slub: scan partial list for free slabs when thrashing
On Sun, 29 Mar 2009, David Rientjes wrote:

> Whenever a cpu cache satisfies a fastpath allocation, a fastpath counter
> is incrememted. This counter is cleared whenever the slowpath is
> invoked. This tracks how many fastpath allocations the cpu slab has
> fulfilled before it must be refilled.

That adds fastpath overhead and it shows for small objects in your tests.

> A new statistic, /sys/kernel/slab/cache/deferred_partial, indicates how
> many times a partial list was deferred because no slabs could satisfy
> the requisite number of objects for CONFIG_SLUB_STATS kernels.

Interesting approach.



\
 
 \ /
  Last update: 2009-03-30 16:45    [W:0.143 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site