From mboxrd@z Thu Jan 1 00:00:00 1970 From: DervishD Date: Tue, 28 Aug 2007 15:03:53 +0000 Subject: Re: [LARTC] cpufreq affects rate in, at least, htb Message-Id: <20070828150353.GA27642@DervishD> List-Id: References: <20070828074738.GF17475@DervishD> In-Reply-To: <20070828074738.GF17475@DervishD> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lartc@vger.kernel.org Hi Andreas :) * Andreas Mueller dixit: > 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 >=20 > What kernel-version do you use? Sorry, I forgot to include that documentation... I'm using 2.6.20.14, and I was waiting until 2.6.22 stable branch reached at least 10 (I'm tired of regressions with all 2.6.x kernels, so I try to avoid updating if possible). =20 > In 2.6.22 another timer is used for psched. I'll give it a try, then, but not before 2.6.22.10 at least. > Maybe NO_HZ could interfere on this issue too. Currently I have CONFIG_HZ_1000=3Dy and CONFIG_HZ=1000, and no tickless idle since that feature was introduced in a later kernel. Probably the problem is the shared timer and I will have to use 2.6.22 kernel to have it if I dare upgrading ;)) Thanks for the information, Andreas :) Ra=FAl N=FA=F1ez de Arenas Coronado --=20 Linux Registered User 88736 | http://www.dervishd.net It's my PC and I'll cry if I want to... RAmen! _______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc