From: Gianni Tedesco <gianni@ecsc.co.uk>
To: chrisl@vmware.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: How to get number of physical CPU in linux from user space?
Date: 25 Oct 2002 09:26:39 +0100 [thread overview]
Message-ID: <1035534399.8301.1.camel@lemsip> (raw)
In-Reply-To: <20021024230229.GA1841@vmware.com>
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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.
>
> 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...
--
// Gianni Tedesco (gianni at ecsc dot co dot uk)
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next prev parent reply other threads:[~2002-10-25 8:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-24 23:02 How to get number of physical CPU in linux from user space? chrisl
2002-10-25 0:47 ` Andrew Walrond
2002-10-25 8:26 ` Gianni Tedesco [this message]
2002-10-25 8:27 ` Martin J. Bligh
2002-10-25 18:20 ` chrisl
2002-10-25 18:35 ` David T Hollis
2002-10-25 18:52 ` Martin J. Bligh
2002-10-25 12:38 ` Dave Jones
2002-10-25 19:07 ` chrisl
-- strict thread matches above, loose matches on Subject: below --
2002-10-25 18:54 Nakajima, Jun
2002-10-25 19:12 ` chrisl
2002-10-25 19:05 Nakajima, Jun
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