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From: Sujit K M <sjt.kar@gmail.com>
To: Primiano Tucci <p.tucci@gmail.com>
Cc: RT <linux-rt-users@vger.kernel.org>
Subject: Re: Strange behavior of pthread_setaffinity_np
Date: Mon, 19 Apr 2010 17:31:59 +0530	[thread overview]
Message-ID: <y2y921ca19c1004190501xdd8506a3j3f4337caf272c55c@mail.gmail.com> (raw)
In-Reply-To: <w2n921ca19c1004190501n36c7f10ch484cda701e261ee9@mail.gmail.com>

On Mon, Apr 19, 2010 at 5:31 PM, Sujit K M <sjt.kar@gmail.com> wrote:
> On Mon, Apr 19, 2010 at 5:21 PM, Primiano Tucci <p.tucci@gmail.com> wrote:
>> Hi Sujit,
>> thanks for your reply, but I have not completely understood your point.
>> Does the kernel make (from the thread viewpoint) differences between
>> Cores of a Processor, or multiple processors?
>
> Yes, It certainly does for Kernel Level Routines. But on User level
> Applications,
> These Might not be the case.
>
>> In my previous speak I generally used the term CPU #0 and #1 to refer
>> to two different cores of a same Processor (a quad core Q9550).
>
> What I had in mind for Quad was Four Cores per Processors.
>
>> Do you mean I need a different API to sett affinity on a per-core
>> basis rather than a per-processor basis? It sound strange to me, as in
>> my little knowledge Cores are viewed, by the system, as different
>> processor, just as in the case of a regular Multi Processor system.
>
> I donot think these API's Have been developed.
>



-- 
-- Sujit K M

blog(http://kmsujit.blogspot.com/)

  parent reply	other threads:[~2010-04-19 12:02 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-19  9:45 Strange behavior of pthread_setaffinity_np Primiano Tucci
2010-04-19 11:07 ` Sujit K M
2010-04-19 11:51   ` Primiano Tucci
     [not found]     ` <w2n921ca19c1004190501n36c7f10ch484cda701e261ee9@mail.gmail.com>
2010-04-19 12:01       ` Sujit K M [this message]
2010-04-19 20:18 ` Primiano Tucci

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