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From: Andi Kleen <ak@suse.de>
To: Arjan van de Ven <arjan@infradead.org>
Cc: "Langsdorf, Mark" <mark.langsdorf@amd.com>,
	"Deguara, Joachim" <joachim.deguara@amd.com>,
	discuss@x86-64.org, linux-kernel@vger.kernel.org,
	cpufreq@lists.linux.org.uk
Subject: Re: [discuss] Re: [PATCH] Allow all Opteron processors to change pstate at same time
Date: Tue, 11 Jul 2006 15:51:01 +0200	[thread overview]
Message-ID: <200607111551.01444.ak@suse.de> (raw)
In-Reply-To: <1152624850.3128.45.camel@laptopd505.fenrus.org>

On Tuesday 11 July 2006 15:34, Arjan van de Ven wrote:
> 
> > Customers in the field seem to want to use TSC for gtod,
> > so I want to know how awful an idea that is.
> 
> in userspace or in the kernel?

It has to be in kernel. User space is hopeless.

> And do you happen to know why they don't want to use hpet?

HPET is slow (although not as bad as PM) too and most BIOS don't 
enable it.

-Andi

  reply	other threads:[~2006-07-11 13:52 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-06 20:31 [PATCH] Allow all Opteron processors to change pstate at same time Mark Langsdorf
2006-07-07 12:10 ` Andi Kleen
2006-07-07 17:36   ` [discuss] " Langsdorf, Mark
2006-07-10 12:45     ` Joachim Deguara
2006-07-10 13:02       ` Joachim Deguara
2006-07-11 12:55   ` Joachim Deguara
2006-07-11 13:07     ` Andi Kleen
2006-07-11 13:14       ` Arjan van de Ven
2006-07-11 16:15         ` Alan Cox
2006-07-11 16:01           ` Arjan van de Ven
2006-07-11 16:04           ` Andi Kleen
2006-07-11 13:31       ` Langsdorf, Mark
2006-07-11 13:34         ` Arjan van de Ven
2006-07-11 13:51           ` Andi Kleen [this message]
2006-07-11 13:14     ` [OT] Evolution use (was: Re: [discuss] Re: [PATCH] Allow all Opteron processors to change pstate at same time) Xavier Bestel
2006-07-12 14:06     ` [discuss] Re: [PATCH] Allow all Opteron processors to change pstate at same time Joachim Deguara
2006-07-12 14:54       ` Andi Kleen
2006-07-25 21:47   ` Langsdorf, Mark
2006-07-26 11:31     ` Joachim Deguara
2006-07-26 16:42   ` Langsdorf, Mark
2006-07-26 16:54     ` Andi Kleen
2006-07-26 18:34       ` Langsdorf, Mark
2006-07-26 18:53         ` Andi Kleen
  -- strict thread matches above, loose matches on Subject: below --
2006-07-12 16:11 shin, jacob
2006-07-12 16:14 ` Langsdorf, Mark
2006-07-13 13:06 ` Pavel Machek
2006-07-13 14:32   ` Joachim Deguara
2006-07-16  1:56     ` Pavel Machek
2006-07-17  7:37       ` Joachim Deguara
2006-07-20 15:59         ` Pavel Machek
2006-07-13 13:37 Bhavana Nagendra

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