From: Samuel Flory <sflory@rackable.com>
To: root@chaos.analogic.com
Cc: Mark Cuss <mcuss@cdlsystems.com>, linux-kernel@vger.kernel.org
Subject: Re: Kernel reports 4 CPUS instead of 2...
Date: Wed, 16 Oct 2002 11:14:05 -0700 [thread overview]
Message-ID: <3DADAC6D.8080407@rackable.com> (raw)
In-Reply-To: Pine.LNX.3.95.1021016135105.150A-100000@chaos.analogic.com
Richard B. Johnson wrote:
>On Wed, 16 Oct 2002, Samuel Flory wrote:
>
>
>
>>>On Wed, 16 Oct 2002, Mark Cuss wrote:
>>>
>>>
>>>
>>>
>>>This is the correct behavior. If you don't like this, you can
>>>swap motherboards with me ;) Otherwise, grin and bear it!
>>>
>>>
>>>
>>>
>>>
>>
>> Wouldn't it be easier just to turn off the hypertreading or jackson
>>tech option in the bios ;-)
>>
>>
>>
>
>Why would you ever want to turn it off? You paid for a CPU with
>two execution units and you want to disable one? This makes
>no sense unless you are using Windows/2000/Professional, which
>will trash your disks and all their files if you have two
>or more CPUs (true).
>
>
>
Actually I can think of 3 obvious reasons:
1)Your app is cache bound, and not cpu bound.
2)Your system tends to only run 1 or 2 non thread activities at a time.
3)You don't trust hyperthreading.
next prev parent reply other threads:[~2002-10-16 18:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-16 17:24 Kernel reports 4 CPUS instead of 2 Mark Cuss
2002-10-16 17:35 ` Richard B. Johnson
2002-10-16 17:56 ` Samuel Flory
2002-10-16 17:54 ` Richard B. Johnson
2002-10-16 18:14 ` Samuel Flory [this message]
2002-10-16 19:28 ` James Cleverdon
2002-10-16 19:44 ` Mark Cuss
2002-10-16 20:10 ` Richard B. Johnson
2002-10-16 20:47 ` Samuel Flory
2002-10-16 21:44 ` Mark Mielke
2002-10-16 22:14 ` Samuel Flory
2002-10-16 22:21 ` Mark Cuss
2002-10-16 18:37 ` Mark Cuss
2002-10-16 23:21 ` Bryan Whitehead
2002-10-17 0:34 ` Mark Chernault
2002-10-17 12:56 ` Richard B. Johnson
2002-10-17 14:19 ` Dave Jones
2002-10-17 17:15 ` Bryan B Whitehead
2002-10-16 17:37 ` Joel Jaeggli
2002-10-16 17:48 ` Mark Cuss
2002-10-16 17:44 ` FD Cami
-- strict thread matches above, loose matches on Subject: below --
2002-10-16 18:08 Nakajima, Jun
2002-10-17 1:02 Matt_Domsch
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