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Date: Sat, 1 Jan 2000 00:19:15 +0000
From: Pavel Machek <pavel@suse.cz>
To: Andi Kleen <ak@suse.de>
Cc: Jeff Garzik <jgarzik@mandrakesoft.com>, linux-kernel@vger.kernel.org,
        netdev@oss.sgi.com
Subject: Re: New net features for added performance
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Hi!

> > an alloc of a PKT_BUF_SZ'd skb immediately follows a free of a
> > same-sized skb.  100% of the time.
> 
> Free/Alloc gives the mm the chance to throttle it by failing, and also to 
> recover from fragmentation by packing the slabs. If you don't do it you need
> to add a hook somewhere that gets triggered on low memory situations and 
> frees the buffers.

And what? It makes allocation longer lived. Our MM should survive that just
fine.

-- 
Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt,
details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.

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