From: Stephen Hemminger <shemminger@osdl.org>
To: David Miller <davem@davemloft.net>
Cc: herbert@gondor.apana.org.au, mingo@elte.hu, akpm@osdl.org,
wenji@fnal.gov, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: Bug 7596 - Potential performance bottleneck for Linxu TCP
Date: Tue, 19 Dec 2006 21:11:24 -0800 [thread overview]
Message-ID: <20061219211124.061b5c2d@localhost.localdomain> (raw)
In-Reply-To: <20061219.185525.41636407.davem@davemloft.net>
On Tue, 19 Dec 2006 18:55:25 -0800 (PST)
David Miller <davem@davemloft.net> wrote:
> From: Herbert Xu <herbert@gondor.apana.org.au>
> Date: Wed, 20 Dec 2006 10:52:19 +1100
>
> > Stephen Hemminger <shemminger@osdl.org> wrote:
> > > I noticed this bit of discussion in tcp_recvmsg. It implies that a better
> > > queuing policy would be good. But it is confusing English (Alexey?) so
> > > not sure where to start.
> >
> > Actually I think the comment says that the current code isn't the
> > most elegant but is more efficient.
>
> It's just explaining the hierarchy of queues that need to
> be purged, and in what order, for correctness.
>
> Alexey added that code when I mentioned to him, right after
> we added the prequeue, that it was possible process the
> normal backlog before the prequeue, which is illegal.
> In fixing that bug, he added the comment we are discussing.
It was the realtime/normal comments that piqued my interest.
Perhaps we should either tweak process priority or remove
the comments.
next prev parent reply other threads:[~2006-12-20 5:12 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <HNEBLGGMEGLPMPPDOPMGKEAJCGAA.wenji@fnal.gov>
2006-11-29 23:27 ` [Changelog] - Potential performance bottleneck for Linxu TCP Wenji Wu
2006-11-29 23:28 ` [patch 1/4] " Wenji Wu
2006-11-29 23:29 ` [patch 2/4] " Wenji Wu
2006-11-29 23:30 ` [patch 3/4] " Wenji Wu
2006-11-29 23:31 ` [patch 4/4] " Wenji Wu
2006-11-30 0:53 ` [patch 1/4] " David Miller
2006-11-30 1:08 ` Andrew Morton
2006-11-30 1:13 ` David Miller
2006-11-30 6:04 ` Mike Galbraith
2006-11-29 23:36 ` [Changelog] " Martin Bligh
2006-11-29 23:42 ` Bug 7596 " Andrew Morton
2006-11-30 6:32 ` Ingo Molnar
2006-12-19 18:37 ` Stephen Hemminger
2006-12-19 23:52 ` Herbert Xu
2006-12-20 2:55 ` David Miller
2006-12-20 5:11 ` Stephen Hemminger [this message]
2006-12-20 5:15 ` David Miller
2006-11-30 1:01 ` David Miller
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