Message-ID: <628900C9F8A7D51188E000A0C9F3FDFA024FF09D@S-NY-EXCH01>
From: Robert Sinko <RSinko@island.com>
To: "'Hubbard, Dwight'" <DHubbard@midamerican.com>, Matt_Domsch@Dell.com,
       linux-kernel@vger.kernel.org
Subject: RE: Wrong CPU count
Date: Thu, 18 Jul 2002 16:35:29 -0400
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That's interesting.  Can it be disabled?

-----Original Message-----
From: Hubbard, Dwight [mailto:DHubbard@midamerican.com]
Sent: Thursday, July 18, 2002 4:30 PM
To: Matt_Domsch@Dell.com; RSinko@island.com;
linux-kernel@vger.kernel.org
Subject: RE: Wrong CPU count


And doubles the cost of licensing software that uses per cpu licensing while
giving marginally better performance.

-----Original Message-----
From: Matt_Domsch@Dell.com [mailto:Matt_Domsch@Dell.com]
Sent: Thursday, July 18, 2002 3:01 PM
To: RSinko@island.com; linux-kernel@vger.kernel.org
Subject: RE: Wrong CPU count


> After upgrading  from kernel 2.4.7-10smp to 2.4.9-34smp using 
> the Red Hat
> RPM downloaded from RH Network, the CPU count on the machine 
> reported by
> dmesg and listed in /proc/cpuinfo was 4 rather than the actual 2.
> 
> This has occured on all 4 Dell 2650's that I've installed 
> this patch on.  I
> don't have any other mult-processor machines available to 
> test this with.

Congratulations, you purchased a fine PowerEdge 2650 with processors which
contain HyperThreading technology.  Each physical processor appears as two
logical processors.  This behaviour is expected, and correct. :-)

Thanks,
Matt

--
Matt Domsch
Sr. Software Engineer, Lead Engineer, Architect
Dell Linux Solutions www.dell.com/linux
Linux on Dell mailing lists @ http://lists.us.dell.com
#1 US Linux Server provider for 2001 and Q1/2002! (IDC May 2002)

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