Re: adding swap workarounds oom - was: Re: Out of Memory: Killed process 16498 (java).

From: Jens Axboe
Date: Thu Mar 02 2006 - 07:24:22 EST


On Thu, Mar 02 2006, Andi Kleen wrote:
> On Thursday 02 March 2006 12:10, Jens Axboe wrote:
>
> > I'm waiting for Andi to render an opinion on the problem. It should have
> > no corruption implications, the PIO path will handle arbitrarily large
> > requests. I'm assuming the mapped sg table is correct, just odd looking
> > for some reason.
>
> I was waiting for feedback if iommu=nomerge changes anything. With that option
> the IOMMU code will never touch the layout of the sg list, just rewrite
> ->dma_address

Andy already reported that it didn't change anything. The output doesn't
looked merged anyways in most of the cases, it's the offsetting that
looks odd.

--
Jens Axboe

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