From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.43) id 1E0Jah-0007q6-EQ for garchives@archives.gentoo.org; Wed, 03 Aug 2005 13:47:29 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.4/8.13.4) with SMTP id j73DhMKv003553; Wed, 3 Aug 2005 13:43:22 GMT Received: from viefep13-int.chello.at (viefep13-int.chello.at [213.46.255.15]) by robin.gentoo.org (8.13.4/8.13.4) with ESMTP id j73DhLMr028761 for ; Wed, 3 Aug 2005 13:43:21 GMT Received: from chello084115154242.2.graz.surfer.at ([84.115.154.242]) by viefep13-int.chello.at (InterMail vM.6.01.04.04 201-2131-118-104-20050224) with ESMTP id <20050803134349.MZZX26435.viefep13-int.chello.at@chello084115154242.2.graz.surfer.at> for ; Wed, 3 Aug 2005 15:43:49 +0200 Received: (qmail 7459 invoked by uid 1000); 3 Aug 2005 15:43:52 +0200 Date: Wed, 3 Aug 2005 15:43:52 +0200 (CEST) From: peter.gantner@stud.uni-graz.at X-X-Sender: nephros@scourge.crownest.net To: gentoo-server@lists.gentoo.org Subject: Re: [gentoo-server] Forthcoming 2.6.13 timer frequency changes & server performance In-Reply-To: <279fbba4050802212827223d38@mail.gmail.com> Message-ID: References: <279fbba4050802212827223d38@mail.gmail.com> X-Iron-Prison: The Empire never ended. Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-server@gentoo.org Reply-to: gentoo-server@lists.gentoo.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Archives-Salt: 18e12478-15a2-4ca4-9e52-5145555fb066 X-Archives-Hash: 09ba28d47b2f1ed363f518a885578eb3 Thanks for collecting the patches. Very handy. Quoth Kerin Millar (on Wednesday, the 3rd of August): > Hi folks. > > Another interesting point that is not mentioned above is that reducing > the timer frequency can significantly help to reduce time drift > (particularly on "real" SMP systems where this effect may be even more > pronounced). The reason that I am posting is twofold: What do you mean with "real" SMP? Is that real as opposed to fake==Hyperthreading, or real as in "more than a handful of nodes"? > http://www.recruit2recruit.net/kerframil/2.6.12-timing-fixes-rollup.patch > http://www.recruit2recruit.net/kerframil/2.6.12-gentoo-r7-timing-fixes-rollup.patch strangely enough, the gentoo patch applies cleanly to my 2.6.12.3 tree, the other does not. > What I would like is for anyone who is interested to put an alternate > value (100 or 250) to the test (if they are in a position to be able > to do so) and to determine whether there is any clear performance > improvement with their workload. Will report from dual-AthlonXP 1800 system soon. Cheers, Peter G. -- "I do not think the way you think I think." -- Kai, last of the Brunnen G -- gentoo-server@gentoo.org mailing list