From: Andres Freund <andres@anarazel.de>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: Joao Correia <joaomiguelcorreia@gmail.com>,
Arun R Bharadwaj <arun@linux.vnet.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Stephen Hemminger <shemminger@vyatta.com>,
netdev@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: Soft-Lockup/Race in networking in 2.6.31-rc1+195 ( possibly?caused by netem)
Date: Mon, 6 Jul 2009 19:24:47 +0200 [thread overview]
Message-ID: <200907061924.48448.andres@anarazel.de> (raw)
In-Reply-To: <20090706163106.GA4559@ami.dom.local>
On Monday 06 July 2009 18:31:06 Jarek Poplawski wrote:
> On Mon, Jul 06, 2009 at 06:13:29PM +0200, Andres Freund wrote:
> > > > Btw, I ran netem with delay for more than 48h on around 80mbit...
> > > > That does not exclude such a rarely triggered race, but makes it a
> > > > bit more unlikely. (With migration thats around 3sec or so)
> > Sorry once more.
> Andres, the bisection + the above - you did 'the whole lotta work' and
> you shouldn't be sorry at all! ;-)
To be fair I have to admit I did run netem for 48hours for other reasons ;-)
I also ran my modified netem, but all it currently does is adjusing
delay/jitter by other means, so that should have no influence.
I am trying to produce artificial loss patterns similar to really occuring
network loss.
I just switched mail client btw ;-)
ATM I have no further ideas except maybe trying different timers or a lower
timer resolution?
Andres
next prev parent reply other threads:[~2009-07-06 17:24 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-03 1:31 Soft-Lockup/Race in networking in 2.6.31-rc1+195 ( possibly caused by netem) Andres Freund
2009-07-03 6:12 ` Soft-Lockup/Race in networking in 2.6.31-rc1+195 ( possibly?caused " Jarek Poplawski
2009-07-03 11:26 ` Andres Freund
2009-07-03 12:03 ` Jarek Poplawski
2009-07-03 12:30 ` Andres Freund
2009-07-03 20:22 ` David Miller
2009-07-03 22:56 ` Jarek Poplawski
2009-07-04 1:55 ` David Miller
2009-07-04 6:36 ` Jarek Poplawski
2009-07-04 15:18 ` Jarek Poplawski
2009-07-06 4:53 ` Joao Correia
2009-07-06 4:53 ` Joao Correia
2009-07-06 8:14 ` Jarek Poplawski
2009-07-06 11:28 ` Joao Correia
2009-07-06 11:28 ` Joao Correia
2009-07-06 14:19 ` Jarek Poplawski
2009-07-06 16:13 ` Andres Freund
2009-07-06 16:31 ` Jarek Poplawski
2009-07-06 17:23 ` Joao Correia
2009-07-06 17:23 ` Joao Correia
2009-07-06 17:26 ` Andres Freund
2009-07-07 6:50 ` Jarek Poplawski
2009-07-07 10:40 ` Joao Correia
2009-07-07 10:40 ` Joao Correia
2009-07-07 10:47 ` Andres Freund
[not found] ` <a5d9929e0907070403n698c9eb9p53a5bb07bafcc169@mail.gmail.com>
2009-07-07 11:05 ` Fwd: " Joao Correia
2009-07-07 11:05 ` Joao Correia
2009-07-07 13:18 ` Jarek Poplawski
2009-07-07 13:22 ` Andres Freund
2009-07-07 13:29 ` Jarek Poplawski
2009-07-07 13:34 ` Andres Freund
2009-07-07 13:57 ` Jarek Poplawski
2009-07-07 16:11 ` Andres Freund
2009-07-08 8:08 ` Jarek Poplawski
2009-07-08 8:29 ` Andres Freund
2009-07-08 9:13 ` Jarek Poplawski
2009-07-08 21:44 ` Joao Correia
2009-07-08 21:44 ` Joao Correia
2009-07-08 22:07 ` Jarek Poplawski
2009-07-08 22:27 ` Joao Correia
2009-07-08 22:27 ` Joao Correia
2009-07-08 22:42 ` Jarek Poplawski
2009-07-08 22:48 ` Joao Correia
2009-07-08 22:48 ` Joao Correia
2009-07-08 22:23 ` Andres Freund
2009-07-08 22:48 ` Jarek Poplawski
2009-07-09 10:31 ` Thomas Gleixner
2009-07-09 10:44 ` Jarek Poplawski
2009-07-09 12:03 ` Thomas Gleixner
2009-07-09 13:22 ` Jarek Poplawski
2009-07-09 14:15 ` Thomas Gleixner
2009-07-09 14:24 ` Jarek Poplawski
2009-07-09 14:25 ` Joao Correia
2009-07-09 14:25 ` Joao Correia
2009-07-09 14:28 ` Thomas Gleixner
2009-07-09 15:28 ` Andres Freund
2009-07-09 16:01 ` Thomas Gleixner
2009-07-09 16:46 ` Andres Freund
2009-07-09 17:44 ` Thomas Gleixner
2009-07-09 21:19 ` Joao Correia
2009-07-09 21:19 ` Joao Correia
2009-07-07 13:20 ` Jarek Poplawski
2009-07-06 17:24 ` Andres Freund [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-06-30 23:20 Soft-Lockup/Race in networking in 2.6.31-rc1+195 (possibly caused " Andres Freund
2009-07-01 18:39 ` Jarek Poplawski
2009-07-01 21:22 ` Andres Freund
2009-07-02 0:37 ` Andres Freund
2009-07-02 9:30 ` Jarek Poplawski
2009-07-02 10:12 ` Jarek Poplawski
2009-07-02 10:51 ` Joao Correia
2009-07-02 10:51 ` Joao Correia
2009-07-02 11:09 ` Jarek Poplawski
2009-07-02 11:11 ` Andres Freund
2009-07-02 11:43 ` Jarek Poplawski
2009-07-02 11:43 ` Andres Freund
2009-07-02 11:54 ` Jarek Poplawski
2009-07-02 11:59 ` Andres Freund
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