From: Denys Fedoryschenko <denys@visp.net.lb>
To: Vladimir Ivashchenko <hazard@francoudi.com>
Cc: "Paweł Staszewski" <pstaszewski@itcare.pl>,
"Linux Network Development list" <netdev@vger.kernel.org>
Subject: Re: htb parallelism on multi-core platforms
Date: Fri, 8 May 2009 21:07:58 +0300 [thread overview]
Message-ID: <200905082107.59144.denys@visp.net.lb> (raw)
In-Reply-To: <1241805312.7242.21.camel@hazard2.francoudi.com>
Btw shared L2 cache have higher latency, than dedicated one.
Thats why Core i7 rules (tested recently).
On Friday 08 May 2009 20:55:12 Vladimir Ivashchenko wrote:
> > >> It is correct, I have 2 quad-core CPUs. If adjacent
> >
> > kernel-identified
> >
> > >> CPUs are on the same physical CPU (e.g. CPU0, CPU1, CPU2 and CPU3)
> >
> > - and
> >
> > >> it is very probable - then I think the L2 cache was actually
> >
> > shared.
> >
> > >> That's because the used CPUs where either 0-3 or 4-7 but never a
> >
> > mix of
> >
> > >> them. So perhaps there is another explanation (maybe
> >
> > driver/hardware).
>
> Keep in mind that on Intel quad-core CPU cache is shared between pairs
> of cores, not for all four cores.
>
> http://www.intel.com/cd/channel/reseller/asmo-na/eng/products/desktop/proce
>ssor/processors/core2quad/feature/index.htm
next prev parent reply other threads:[~2009-05-08 18:08 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-17 10:40 htb parallelism on multi-core platforms Radu Rendec
2009-04-17 11:31 ` David Miller
2009-04-17 11:33 ` Badalian Vyacheslav
2009-04-17 22:41 ` Jarek Poplawski
2009-04-18 0:21 ` Denys Fedoryschenko
2009-04-18 7:56 ` Jarek Poplawski
2009-04-22 14:02 ` Radu Rendec
2009-04-22 21:29 ` Jesper Dangaard Brouer
2009-04-23 8:20 ` Jarek Poplawski
2009-04-23 13:56 ` Radu Rendec
2009-04-23 18:19 ` Jarek Poplawski
2009-04-23 20:19 ` Jesper Dangaard Brouer
2009-04-24 9:42 ` Radu Rendec
2009-04-28 10:15 ` Jesper Dangaard Brouer
2009-04-29 10:21 ` Radu Rendec
2009-04-29 10:31 ` Jesper Dangaard Brouer
2009-04-29 11:03 ` Radu Rendec
2009-04-29 12:23 ` Jarek Poplawski
2009-04-29 13:15 ` Radu Rendec
2009-04-29 13:38 ` Jarek Poplawski
2009-04-29 16:21 ` Radu Rendec
2009-04-29 22:49 ` Calin Velea
2009-04-29 23:00 ` Re[2]: " Calin Velea
2009-04-30 11:19 ` Radu Rendec
2009-04-30 11:44 ` Jesper Dangaard Brouer
2009-04-30 14:04 ` Re[2]: " Calin Velea
2009-05-08 10:15 ` Paweł Staszewski
2009-05-08 17:55 ` Vladimir Ivashchenko
2009-05-08 18:07 ` Denys Fedoryschenko [this message]
2009-04-23 12:31 ` Radu Rendec
2009-04-23 18:43 ` Jarek Poplawski
2009-04-23 19:06 ` Jesper Dangaard Brouer
2009-04-23 19:14 ` Jarek Poplawski
2009-04-23 19:47 ` Jesper Dangaard Brouer
2009-04-23 20:00 ` Jarek Poplawski
2009-04-23 20:09 ` Jeff King
2009-04-24 6:01 ` Jarek Poplawski
[not found] ` <1039493214.20090424135024@gemenii.ro>
2009-04-24 11:19 ` Jarek Poplawski
2009-04-24 11:35 ` Re[2]: " Calin Velea
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