Date: Sat, 31 Jan 2009 09:16:04 +1100
From: Herbert Xu <herbert@gondor.apana.org.au>
To: David Miller <davem@davemloft.net>
Cc: jarkao2@gmail.com, zbr@ioremap.net, w@1wt.eu, dada1@cosmosbay.com,
       ben@zeus.com, mingo@elte.hu, linux-kernel@vger.kernel.org,
       netdev@vger.kernel.org, jens.axboe@oracle.com
Subject: Re: [PATCH v2] tcp: splice as many packets as possible at once
Message-ID: <20090130221604.GD11381@gondor.apana.org.au>
References: <20090126212130.GA4338@ioremap.net> <20090126.221056.174077798.davem@davemloft.net> <20090127074048.GA4197@ff.dom.local> <20090130.134227.123379239.davem@davemloft.net>
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On Fri, Jan 30, 2009 at 01:42:27PM -0800, David Miller wrote:
> 
> Hmmm, Jarek's comments here made me realize that we might be
> able to do some hack with cooperation with SLAB.
> 
> Basically the idea is that if the page count of a SLAB page
> is greater than one, SLAB will not use that page for new
> allocations.
> 
> It's cheesy and the SLAB developers will likely barf at the
> idea, but it would certainly work.

I'm not going anywhere near that discussion :)

> Back to real life, I think long term the thing to do is to just do the
> cached page allocator thing we'll be doing after Jarek's socket page
> patch is integrated, and for best performance the driver has to
> receive it's data into pages, only explicitly pulling the ethernet
> header into the linear area, like NIU does.

Yes that sounds like the way to go.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
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