From: David Miller <davem@davemloft.net>
To: sven@thebigcorporation.com
Cc: ghaskins@novell.com, vernux@us.ibm.com, andi@firstfloor.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rt-users@vger.kernel.org, pmullaney@novell.com
Subject: Re: High contention on the sk_buff_head.lock
Date: Wed, 18 Mar 2009 18:54:41 -0700 (PDT) [thread overview]
Message-ID: <20090318.185441.138157931.davem@davemloft.net> (raw)
In-Reply-To: <1237427007.8204.55.camel@quadrophenia.thebigcorporation.com>
From: Sven-Thorsten Dietrich <sven@thebigcorporation.com>
Date: Wed, 18 Mar 2009 18:43:27 -0700
> Do we have to rule-out per-CPU queues, that aggregate into a master
> queue in a batch-wise manner?
That would violate the properties and characteristics expected by
the packet scheduler, wrt. to fair based fairness, rate limiting,
etc.
The only legal situation where we can parallelize to single device
is where only the most trivial packet scheduler is attached to
the device and the device is multiqueue, and that is exactly what
we do right now.
next prev parent reply other threads:[~2009-03-19 1:54 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-18 17:24 High contention on the sk_buff_head.lock Vernon Mauery
2009-03-18 19:07 ` Eric Dumazet
2009-03-18 20:17 ` Vernon Mauery
2009-03-20 23:29 ` Jarek Poplawski
2009-03-23 8:32 ` Eric Dumazet
2009-03-23 8:37 ` David Miller
2009-03-23 8:50 ` Jarek Poplawski
2009-04-02 14:13 ` Herbert Xu
2009-04-02 14:15 ` Herbert Xu
2009-03-18 20:54 ` Andi Kleen
2009-03-18 21:03 ` David Miller
2009-03-18 21:10 ` Vernon Mauery
2009-03-18 21:38 ` David Miller
2009-03-18 21:49 ` Vernon Mauery
2009-03-19 1:02 ` David Miller
2009-03-18 21:54 ` Gregory Haskins
2009-03-19 1:03 ` David Miller
2009-03-19 1:13 ` Sven-Thorsten Dietrich
2009-03-19 1:17 ` David Miller
2009-03-19 1:43 ` Sven-Thorsten Dietrich
2009-03-19 1:54 ` David Miller [this message]
2009-03-19 5:49 ` Eric Dumazet
2009-03-19 5:58 ` David Miller
2009-03-19 14:04 ` [PATCH] net: reorder struct Qdisc for better SMP performance Eric Dumazet
2009-03-20 8:33 ` David Miller
2009-03-19 13:45 ` High contention on the sk_buff_head.lock Andi Kleen
2009-03-19 3:48 ` Gregory Haskins
2009-03-19 5:38 ` David Miller
2009-03-19 12:42 ` Gregory Haskins
2009-03-19 20:52 ` David Miller
2009-03-19 12:50 ` Peter W. Morreale
2009-03-19 7:15 ` Evgeniy Polyakov
2009-03-18 21:07 ` Vernon Mauery
2009-03-18 21:45 ` Eilon Greenstein
2009-03-18 21:51 ` Vernon Mauery
2009-03-18 21:59 ` Andi Kleen
2009-03-18 22:19 ` Rick Jones
2009-03-19 12:59 ` Peter W. Morreale
2009-03-19 13:36 ` Peter W. Morreale
2009-03-19 13:46 ` Andi Kleen
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