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RE: [Xen-devel] Time/cpu frequency is wrong on x86_64


  • To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>
  • From: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
  • Date: Mon, 15 Aug 2005 00:32:07 -0700
  • Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 15 Aug 2005 07:30:49 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcWhax8uun0Y1LTNRumc0NM4vQPiXwAACr1w
  • Thread-topic: [Xen-devel] Time/cpu frequency is wrong on x86_64

Keir Fraser wrote:
> On 15 Aug 2005, at 06:39, Nakajima, Jun wrote:
> 
>> I noticed that cpu MHz in /proc/cpuinfo is wrong:
>> 
>> Also
>> $ time sleep 3
>> real    0m15.042s
>> user    0m0.000s
>> sys     0m0.000s
>> 
>> I'm sure it used to be correct, i.e. close to 3.8 GHz.
> 
> I just fixed cpu MHz (which also fixes the cpu_khz variable). So you
> should see 3.8GHz reported again.
Thanks.

> 
> For the 'time sleep 3' problem -- does the sleep actually take 3 or 15
> seconds?
> 
>   -- Keir

Actually 3 seconds.

Jun
---
Intel Open Source Technology Center

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