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 4.62) (envelope-from ) id 1HEXOL-0006yr-PJ for garchives@archives.gentoo.org; Tue, 06 Feb 2007 20:58:18 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l16KuNaO018400; Tue, 6 Feb 2007 20:56:23 GMT Received: from um2.unlimitedmail.net (139.Red-80-26-111.staticIP.rima-tde.net [80.26.111.139]) by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l16Kl2JA002076 for ; Tue, 6 Feb 2007 20:47:03 GMT Received: from ppp.zz ([137.204.208.98]) (authenticated bits=0) by um2.unlimitedmail.net (8.13.7/8.13.4) with ESMTP id l16Kkuqc022358 for ; Tue, 6 Feb 2007 21:46:57 +0100 From: Etaoin Shrdlu To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Performance problem at writing big files and Multitasking Date: Tue, 6 Feb 2007 22:16:45 +0100 User-Agent: KMail/1.9.5 References: <6142e6140702061231x5a517c2fvf29f87efacb2f576@mail.gmail.com> In-Reply-To: <6142e6140702061231x5a517c2fvf29f87efacb2f576@mail.gmail.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200702062216.45220.shrdlu@unlimitedmail.org> X-UnlimitedMail-MailScanner-From: shrdlu@unlimitedmail.org X-Archives-Salt: bd67aea6-6021-4a91-a7b3-e494394d9d27 X-Archives-Hash: 88498a75a458ab5a16aab6a70f7130f4 On Tuesday 6 February 2007 21:31, Daniel Pielmeier wrote: > On the other i recently recognized when i doing some video editing > i.e. demultiplex the movie with projectx which shows the speed of > writing video and audio to the disk. It writes about 200MB with about > 25MB/s then it halts for about 2-3 seconds and starts again writing > data to the disk, after another 200MB it halts again and starts over > again and so on. I also recognize the same behavior when i multiplex > the video and audio together with mplex. What could cause this > problems What I/O scheduler are you using? Did you try to experiment with the deadline or the cfq I/O schedulers? If you have them enabled in your kernel config, read Documentation/block/switching-sched.txt and see if things get better after changing the I/O scheduler for your hard disk. Of course, your problem might be caused by something else altogether. -- gentoo-user@gentoo.org mailing list