lkml.org 
[lkml]   [2012]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 24/25] memcg/slub: shrink dead caches
On Mon, 18 Jun 2012, Glauber Costa wrote:

> In the slub allocator, when the last object of a page goes away, we
> don't necessarily free it - there is not necessarily a test for empty
> page in any slab_free path.

This is the same btw in SLAB which keeps objects in per cpu caches and
keeps empty slab pages on special queues.

> This patch marks all memcg caches as dead. kmem_cache_shrink is called
> for the ones who are not yet dead - this will force internal cache
> reorganization, and then all references to empty pages will be removed.

You need to call this also for slab to drain the caches and free the pages
on the empty list.



\
 
 \ /
  Last update: 2012-07-06 18:01    [W:0.270 / U:3.912 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site