* Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds) [not found] ` <Pine.LNX.4.64.0710231305050.20095@schroedinger.engr.sgi.com> @ 2007-10-23 20:41 ` Pekka Enberg 2007-10-24 16:56 ` Christoph Lameter 0 siblings, 1 reply; 2+ messages in thread From: Pekka Enberg @ 2007-10-23 20:41 UTC (permalink / raw) To: Christoph Lameter; +Cc: Alexey Dobriyan, linux-kernel, Linux MM Hi Christoph, (I fixed linux-mm cc to kvack.org.) On 10/23/07, Christoph Lameter <clameter@sgi.com> wrote: > The number of objects per page is reduced by enabling full debugging. That > triggers a potential of more order 1 allocations but we are failing at > order 0 allocs. Yeah, but we're _not failing_ when debugging is enabled. Thus, it's likely, that the _failing_ (non-debug) case has potential for more order 0 allocs, no? I am just guessing here but maybe it's slab_order() behaving differently from calculate_slab_order() so that we see more order 0 pressure in SLUB than SLAB? Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds) 2007-10-23 20:41 ` SLUB 0:1 SLAB (OOM during massive parallel kernel builds) Pekka Enberg @ 2007-10-24 16:56 ` Christoph Lameter 0 siblings, 0 replies; 2+ messages in thread From: Christoph Lameter @ 2007-10-24 16:56 UTC (permalink / raw) To: Pekka Enberg; +Cc: Alexey Dobriyan, linux-kernel, Linux MM On Tue, 23 Oct 2007, Pekka Enberg wrote: > Yeah, but we're _not failing_ when debugging is enabled. Thus, it's > likely, that the _failing_ (non-debug) case has potential for more > order 0 allocs, no? I am just guessing here but maybe it's > slab_order() behaving differently from calculate_slab_order() so that > we see more order 0 pressure in SLUB than SLAB? Seesm that order 0 pressure is better than order 1? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2007-10-24 16:56 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <20071023181615.GA10377@martell.zuzino.mipt.ru>
[not found] ` <Pine.LNX.4.64.0710231227590.19626@schroedinger.engr.sgi.com>
[not found] ` <84144f020710231304h6cba8626na4ab4bec0acda7a0@mail.gmail.com>
[not found] ` <Pine.LNX.4.64.0710231305050.20095@schroedinger.engr.sgi.com>
2007-10-23 20:41 ` SLUB 0:1 SLAB (OOM during massive parallel kernel builds) Pekka Enberg
2007-10-24 16:56 ` Christoph Lameter
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).