From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1Mk43p-0006j6-O3 for garchives@archives.gentoo.org; Sat, 05 Sep 2009 22:48:46 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 891EBE0965; Sat, 5 Sep 2009 22:48:44 +0000 (UTC) Received: from ey-out-1920.google.com (ey-out-1920.google.com [74.125.78.144]) by pigeon.gentoo.org (Postfix) with ESMTP id 48B06E0965 for ; Sat, 5 Sep 2009 22:48:44 +0000 (UTC) Received: by ey-out-1920.google.com with SMTP id 13so752092eye.40 for ; Sat, 05 Sep 2009 15:48:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:from:to:subject:date :user-agent:references:in-reply-to:mime-version:content-type :content-transfer-encoding:message-id; bh=jphfxU1Z86SPyY1cBFsFPddV4h56I3hyhY2lXV5Zldk=; b=ORQBAiKtwEM9iiVxNShSkFcA9rVA8ziCmmjH+xTCwyhDsis8FEVpbd70MUz8S2ku6r Ekyn3OPbBo0mA+cLs4E2dONErRHwQ1Faqj2gX7NBsvi03jBPP7pYFWP7wEcXT391nwrk a6LCQf9OU+Ac4fHbomgZzy/nAq/2zXkHeRAIE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=from:to:subject:date:user-agent:references:in-reply-to:mime-version :content-type:content-transfer-encoding:message-id; b=Iv5uN1FkcVEhAOBL4pwzUqj661/822qWfTN/JB6doGjFW/Ab8yIbGHvI+k2SIbkTEa LP5S4ZVDS/1+l9OwiSAQDX6rdAv5LjMoDhCAsvTCt7XKsopJaL2jE5PM5ftSgGNjuZmr IrJeTpg9sosnZ0E2UgYsLAky0M7Oj9OfOTDzA= Received: by 10.216.1.68 with SMTP id 46mr1171257wec.77.1252190923698; Sat, 05 Sep 2009 15:48:43 -0700 (PDT) Received: from energy.localnet (energy.heim10.tu-clausthal.de [139.174.197.94]) by mx.google.com with ESMTPS id f13sm2489758gvd.8.2009.09.05.15.48.42 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sat, 05 Sep 2009 15:48:43 -0700 (PDT) From: Volker Armin Hemmann To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Kon Colivas is working again on a new scheduler for Desktop/Multimedia/Gaming PCs Date: Sun, 6 Sep 2009 00:48:40 +0200 User-Agent: KMail/1.12.1 (Linux/2.6.30.5r4; KDE/4.3.1; x86_64; ; ) References: <200909051659.11070.volkerarmin@googlemail.com> In-Reply-To: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Message-Id: <200909060048.40378.volkerarmin@googlemail.com> X-Archives-Salt: a4f37d6b-604d-4909-a779-83a002a373ea X-Archives-Hash: 02226524916003ac4e06740585477ca6 On Samstag 05 September 2009, Nikos Chantziaras wrote: > On 09/05/2009 05:59 PM, Volker Armin Hemmann wrote: > >> 1000 Hz timer freq > > > > change that to 300 > > > >> Did you mean tickless system with "noticks"? I have this enabled ATM > > > > deactivate that. > > Even with that, there still are problems. With composite enabled, move > an mplayer window around and see how the video starts to skip big > amounts of frames at the moment you start moving and when you "drop" it > again. The compositor takes away CPU time and mplayer starves for a > short time. BFS solves this. nope. No drops. vlc, xine, mplayer. At least no visible drop - and none of the three is complaining. But there is a pro-tip: use a non-broken X. aka one with fedora_dont_backfill_bg_none.patch > > Also, have you considered that you got it all backwards? The kernel > configuration tells you that for lower latencies, you should use 1000Hz > and PREEMPT. It even says "Desktop" right there. Why should I take > your word over that of the kernel devs who actually wrote that code? low latency means bad throughput and that hurts IO. > > > if that does not help: > >> And with extX I assume you meant the file systems? I'm aware that ext3 > >> is not very efficient with large files, but I can't/don't want to use > >> ext4 yet because I need to access the partition from windows. > > > > neither use ext3 nor ext4. > > The I/O blockage has nothing to do with the CPU scheduler. Or at least > not much. The "GUI freezes during file copy" problem is another beast. > BFS doesn't solve that. > it is a mixture of cpu-scheduler, 'harddisk'-scheduler, filesystem, drivers.