Subject: Re: How to get number of physical CPU in linux from user space?
From: Gianni Tedesco <gianni@ecsc.co.uk>
To: chrisl@vmware.com
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20021024230229.GA1841@vmware.com>
References: <20021024230229.GA1841@vmware.com>
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Date: 25 Oct 2002 09:26:39 +0100
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On Fri, 2002-10-25 at 00:02, chrisl@vmware.com wrote:
> It seems that /proc/cpuinfo will return the number of logical CPU.
> If the machine has Intel Hyper-Thread enabled, that number is bigger
> than physical CPU number. Usually twice as big.
>=20
> My question is, what is the reliable way for user space program
> to detect the number of physical CPU in the current machine?

I believe there was talk about representing the CPUs in driverfs
somehow. Not sure of the details though...

--=20
// Gianni Tedesco (gianni at ecsc dot co dot uk)
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8646BE7D: 6D9F 2287 870E A2C9 8F60 3A3C 91B5 7669 8646 BE7D

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