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Message-ID: <489ecd0c0510271904p127df5a7pe8793ba47d635538@mail.gmail.com>
Date: Fri, 28 Oct 2005 10:04:35 +0800
From: Luke Yang <luke.adi@gmail.com>
To: Claudio Scordino <cloud.of.andor@gmail.com>
Subject: Re: The "best" value of HZ
Cc: linux-kernel@vger.kernel.org, kernelnewbies@nl.linux.org
In-Reply-To: <200510280118.42731.cloud.of.andor@gmail.com>
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References: <200510280118.42731.cloud.of.andor@gmail.com>
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  yes,  our Blackfin CPU (from Analog Device) is team interested in
it.  Dynamically modify HZ will be useful when we evaluate the
performance.

On 10/28/05, Claudio Scordino <cloud.of.andor@gmail.com> wrote:
> Hi,
>
>     during the last years there has been a lot of discussion about the "best"
> value of HZ... On i386 was 100, then became 1000, and finally was set to 250.
> I'm thinking to do an evaluation of this parameter using different
> architectures.
>
> Has anybody thought to give the possibility to modify the value of HZ at boot
> time instead of at compile time ? This would allow to easily test different
> values on different machines and create a table containing the "best" value
> for each architecture...  At this moment, instead, we have to recompile the
> kernel for each different value :(
>
> Do you think there would be much work to do that ?
> Do you think it would be a desired feature the knowledge of the best value for
> each architecture with more precision ?
>
> Thanks,
>
>       Claudio
> -
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