RE: Wrong CPU count

From: Robert Sinko (RSinko@island.com)
Date: Thu Jul 18 2002 - 15:35:29 EST

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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