netdev - Re: 2.6.24-rc3, 4GB RAM, swiotlb, r8169, out of space

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Message-Id: <200711250148.31695.alistair@devzero.co.uk>
Date:	Sun, 25 Nov 2007 01:48:31 +0000
From:	Alistair John Strachan <alistair@...zero.co.uk>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: 2.6.24-rc3, 4GB RAM, swiotlb, r8169, out of space

On Sunday 25 November 2007 00:25:10 Francois Romieu wrote:
> Alistair John Strachan <alistair@...zero.co.uk> :
> [...]
>
> > The "choke" affects other devices on the system too, notably libata,
> > which does not recover gracefully. In my logs, I see a stream of:
> >
> > DMA: Out of SW-IOMMU space for 7222 bytes at device 0000:04:00.0
> > DMA: Out of SW-IOMMU space for 7222 bytes at device 0000:04:00.0
>
> You are using jumbo frames, aren't you ?

Yes, 7200 byte frames. I'll certainly try out your patch and report back.

-- 
Cheers,
Alistair.

137/1 Warrender Park Road, Edinburgh, UK.
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