From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Mueller <andreas@stapelspeicher.org>
Date: Tue, 28 Aug 2007 10:24:07 +0000
Subject: Re: [LARTC] cpufreq affects rate in, at least, htb
Message-Id: <20070828102407.GA3668@lintera>
List-Id: <lartc.vger.kernel.org>
References: <20070828074738.GF17475@DervishD>
In-Reply-To: <20070828074738.GF17475@DervishD>
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To: lartc@vger.kernel.org

Hi, DervishD

DervishD wrote:
>     Hi all :)
>=20
>     I've tested this and having a cpufreq that slows down the CPU
> affects the rate of HTB. My ondemand cpufreq governor scales down the
> CPU frequency about 40% and this is more or less the slowdown the rate
> suffers, 40%.
>=20
>     Any known way of dealing with this without having to disable
> cpufreq?
>=20
>     Thanks in advance :)
>=20
>     Ra=FAl N=FA=F1ez de Arenas Coronado
>=20

What kernel-version do you use?

In 2.6.22 another timer is used for psched.
Maybe NO_HZ could interfere on this issue too.

Bye,
 Andreas.
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