netdev - Re: TCP stalls in current git, possibly splice related

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Date:	Mon, 16 Jul 2007 10:45:45 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	James Morris <jmorris@...ei.org>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: TCP stalls in current git, possibly splice related

On Fri, 2007-07-13 at 13:05 +0200, Jens Axboe wrote:
> On Fri, Jul 13 2007, Johannes Berg wrote:
> > On Thu, 2007-07-12 at 16:12 -0400, James Morris wrote:
> > > I'm seeing TCP connection stalls with current git, and a bisect found the 
> > > following as a possible cause:
> > 
> > I'm also seeing stalls with synergy.
> 
> Please try the below.

I usually see stalls sending data from machine A to machine B. I just
upgraded machine B to commit 8d9107e8c50e1c4ff43c91c8841805833f3ecfb9
(Fri Jul 13 16:53:18 2007 -0700) and the tree includes this patch. This
did not, however, fix the problem so I guess the problem is on the
sender side. Due to wireless-dev lagging behind I there still have
2.6.22-something where this patch doesn't apply. I hope John will merge
again soon and then I'll report back whether I still see the stalling
behaviour with a current tree that includes this patch.

johannes

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