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
Date: Sat, 1 Jan 2000 00:19:15 +0000 [thread overview]
Message-ID: <20000101001915.A40@(none)> (raw)
In-Reply-To: <3A9842DC.B42ECD7A@mandrakesoft.com> <oupsnl3k5gs.fsf@pigdrop.muc.suse.de> <3A984BDA.190B4D8E@mandrakesoft.com> <20010225011211.A23853@gruyere.muc.suse.de>
In-Reply-To: <20010225011211.A23853@gruyere.muc.suse.de>; from ak@suse.de on Sun, Feb 25, 2001 at 01:12:11AM +0100
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.
next prev parent reply other threads:[~2001-03-01 20:35 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-24 23:25 New net features for added performance Jeff Garzik
2001-02-24 23:48 ` Andi Kleen
2001-02-25 0:03 ` Jeff Garzik
2001-02-25 0:12 ` Andi Kleen
2000-01-01 0:19 ` Pavel Machek [this message]
2001-03-04 1:19 ` LILO error with 2.4.3-pre1 Steven J. Hill
2001-03-04 1:39 ` Keith Owens
2001-03-04 2:27 ` Tom Sightler
2001-03-04 21:32 ` Mircea Damian
2001-03-04 23:05 ` Guest section DW
2001-03-04 2:39 ` Andre Tomt
2001-03-04 3:32 ` Steven J. Hill
2001-03-04 13:35 ` Alan Cox
2001-02-25 0:13 ` New net features for added performance Jeff Garzik
2001-02-25 0:16 ` Andi Kleen
2001-02-25 11:49 ` Rusty Russell
2001-02-26 23:48 ` David S. Miller
2001-02-27 0:03 ` Andi Kleen
2001-02-27 0:08 ` David S. Miller
2001-02-27 2:53 ` Jeremy Jackson
2001-02-27 19:59 ` kuznet
2001-02-25 1:55 ` Michael Richardson
2001-02-25 2:32 ` Jeremy Jackson
2001-02-25 3:23 ` Chris Wedgwood
2001-02-25 12:41 ` Werner Almesberger
2001-02-25 13:57 ` Chris Wedgwood
2001-02-25 2:38 ` Noah Romer
2001-03-03 23:32 ` Jes Sorensen
2001-02-25 12:01 ` Andrew Morton
2001-02-25 15:11 ` Jeremy Jackson
2001-02-25 12:22 ` Werner Almesberger
2001-03-12 15:08 ` Jes Sorensen
2001-02-25 13:08 ` Jonathan Morton
2001-02-26 23:46 ` David S. Miller
2001-02-27 0:07 ` Jeff Garzik
2001-02-27 0:10 ` David S. Miller
2001-03-01 21:06 ` Jes Sorensen
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