From: Jarek Poplawski <jarkao2@gmail.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Matheos Worku <Matheos.Worku@Sun.COM>,
David Miller <davem@davemloft.net>,
jesse.brandeburg@intel.com, netdev@vger.kernel.org,
hadi@cyberus.ca
Subject: Re: 2.6.24 BUG: soft lockup - CPU#X
Date: Fri, 28 Mar 2008 16:29:53 +0100 [thread overview]
Message-ID: <20080328152953.GB14642@ami.dom.local> (raw)
In-Reply-To: <20080328145634.GA24712@gondor.apana.org.au>
On Fri, Mar 28, 2008 at 10:56:34PM +0800, Herbert Xu wrote:
> On Fri, Mar 28, 2008 at 03:39:53PM +0100, Jarek Poplawski wrote:
> >
> > Probably some backlog would be necessary, similarly to RX. The main
>
> Sorry but I still don't understand how this would differ from
> what we do now. As it stands the packet would be queued for
> later processing if another CPU is doing a qdisc run.
But during this, now limited, time of qdisc_run() there is a contention
for queue_lock and probably some additional cache updating because of
this other enqueuing, which could be delayed especially if queue length
is above some level.
Cheers,
Jarek P.
next prev parent reply other threads:[~2008-03-28 15:22 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-26 16:46 2.6.24 BUG: soft lockup - CPU#X Matheos Worku
2008-03-26 17:31 ` Rick Jones
2008-03-26 20:14 ` Jarek Poplawski
2008-03-26 20:26 ` Matheos Worku
2008-03-26 21:46 ` Jarek Poplawski
2008-03-26 21:53 ` Jarek Poplawski
2008-03-27 10:33 ` Jarek Poplawski
2008-03-27 23:18 ` Brandeburg, Jesse
2008-03-27 23:45 ` Matheos Worku
2008-03-28 0:02 ` David Miller
2008-03-28 0:19 ` Matheos Worku
2008-03-28 0:34 ` David Miller
2008-03-28 1:22 ` Herbert Xu
2008-03-28 1:38 ` David Miller
2008-03-28 10:29 ` Herbert Xu
2008-03-28 10:56 ` Ingo Molnar
2008-03-28 11:06 ` Herbert Xu
2008-03-28 11:29 ` Herbert Xu
2008-03-28 12:19 ` jamal
2008-03-28 13:26 ` Herbert Xu
2008-03-28 14:07 ` jamal
2008-03-28 14:12 ` Ingo Molnar
2008-03-28 23:25 ` David Miller
2008-03-28 14:09 ` Ingo Molnar
2008-03-28 1:58 ` Matheos Worku
2008-03-28 10:33 ` jamal
2008-03-28 17:00 ` Matheos Worku
2008-03-28 10:38 ` Herbert Xu
2008-03-28 13:38 ` Jarek Poplawski
2008-03-28 13:53 ` Herbert Xu
2008-03-28 14:39 ` Jarek Poplawski
2008-03-28 14:56 ` Herbert Xu
2008-03-28 15:29 ` Jarek Poplawski [this message]
2008-03-28 15:47 ` Jarek Poplawski
2008-03-29 1:06 ` Herbert Xu
2008-03-29 9:11 ` Jarek Poplawski
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