Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds)

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To: Christoph Lameter <clameter@...>

Cc: Alexey Dobriyan <adobriyan@...>, Mel Gorman <mel@...>, Pekka Enberg <penberg@...>, <linux-kernel@...>, <linux-mm@...>

Subject: Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds)

Date: Wednesday, October 24, 2007 - 10:34 pm

On Thursday 25 October 2007 12:15, Christoph Lameter wrote:
quoted text> On Wed, 24 Oct 2007, Alexey Dobriyan wrote:
> > [12728.701398] DMA free:8032kB min:32kB low:40kB high:48kB active:2716kB
> > inactive:2208kB present:12744kB pages_scanned:9299 all_unreclaimable?
> > yes [12728.701567] lowmem_reserve[]: 0 2003 2003 2003 [12728.701654]
>
> Ummm... all unreclaimable is set! Are you mlocking the pages in memory? Or
> what causes this? All pages under writeback? What is the dirty ratio set
> to?

Why is SLUB behaving differently, though.

Memory efficiency wouldn't be the reason, would it? I mean, SLUB
should be more efficient than SLAB, plus have less data lying around
in queues.
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Messages in current thread:

SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Alexey Dobriyan, (Tue Oct 23, 2:16 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Christoph Lameter, (Tue Oct 23, 3:35 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Pekka Enberg, (Tue Oct 23, 4:04 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Christoph Lameter, (Tue Oct 23, 4:09 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Pekka Enberg, (Tue Oct 23, 4:41 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Christoph Lameter, (Wed Oct 24, 12:56 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Pekka Enberg, (Tue Oct 23, 3:48 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Christoph Lameter, (Tue Oct 23, 3:57 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Mel Gorman, (Wed Oct 24, 4:09 am)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Alexey Dobriyan, (Wed Oct 24, 3:28 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Christoph Lameter, (Wed Oct 24, 10:15 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Nick Piggin, (Wed Oct 24, 10:34 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Christoph Lameter, (Wed Oct 24, 10:43 pm)

Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds), Nick Piggin, (Wed Oct 24, 11:06 pm)


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Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds)

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