Re: ppc: bogomips at 73 when CPU is at 1GHz

To: Junichi Uekawa <dancer@netfort.gr.jp>
Cc: linux-kernel@vger.kernel.org, debian-powerpc@lists.debian.org
Subject: Re: ppc: bogomips at 73 when CPU is at 1GHz
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed, 17 May 2006 08:37:13 +1000
Message-id: <[🔎] 1147819034.6753.17.camel@localhost.localdomain>
In-reply-to: <[🔎] 87ac9hzn1g.dancerj%dancer@netfort.gr.jp>
References: <[🔎] 87ac9hzn1g.dancerj%dancer@netfort.gr.jp>

On Wed, 2006-05-17 at 06:18 +0900, Junichi Uekawa wrote:
> Hi,
> 
> I've noticed the very log value on bogomips on self-compiled 2.6.16.16
> on iBook G4.

 .../...

Normal. We don't use CPU bogo loops for short timings, we use the CPU
timebase instead, thus you now get bogomips derived from the timebae
frequency of the machine.

Ben.

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