lkml.org 
[lkml]   [2009]   [Jul]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC][PATCH] Check write to slab memory which freed already using mudflap
From
Date
Hi David,

On Fri, 10 Jul 2009, Ingo Molnar wrote:
> > > SLAB is (slowly) going away so you might want to port this to SLUB
> > > as well so we can merge both.
> >
> > and SLQB which will replace both? :-/

On Fri, 2009-07-10 at 02:04 -0700, David Rientjes wrote:
> I'm not sure what the status of slqb is, although I would have expected it
> to have been pushed for inclusion in 2.6.31 as a slab allocator
> alternative. Nick, any forecast for inclusion?

2.6.32 most likely. Nick has fixed a bunch of problems but there's still
one ppc boot time bug that's turning out to be hard to find.

On Fri, 2009-07-10 at 02:04 -0700, David Rientjes wrote:
> SLUB has a pretty noticeable performance degradation on benchmarks such as
> netperf TCP_RR with high numbers of threads (see my post about it:
> http://marc.info/?l=linux-kernel&m=123839191416472). CONFIG_SLAB is the
> optimal configuration for workloads that share similiar slab thrashing
> patterns (which my patchset dealt with in an indirect way and yet still
> didn't match slab's performance). I haven't yet seen data that suggests
> anything other than CONFIG_SLAB has parity with such a benchmark.

As I said before, I'm interesting in getting those patches merged. I
think Christoph raised some issues that need to be take care of before
we can do that, no?

Pekka



\
 
 \ /
  Last update: 2009-07-10 11:21    [W:1.277 / U:0.980 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site