lkml.org 
[lkml]   [2007]   [Feb]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: SLUB: The unqueued Slab allocator
On Thu, 22 Feb 2007 10:42:23 -0800 (PST)
Christoph Lameter <clameter@sgi.com> wrote:

> > > G. Slab merging
> > >
> > > We often have slab caches with similar parameters. SLUB detects those
> > > on bootup and merges them into the corresponding general caches. This
> > > leads to more effective memory use.
> >
> > Did you do any tests on what that does to long term memory fragmentation?
> > It is against the "object of same type have similar livetime and should
> > be clustered together" theory at least.
>
> I have done no tests in that regard and we would have to assess the impact
> that the merging has to overall system behavior.
>
From a viewpoint of a crash dump user, this merging will make crash dump
investigation very very very difficult.
So please avoid this merging if the benefit is nog big.

-Kame

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-02-24 06:33    [W:0.055 / U:4.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site