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 4.60) (envelope-from ) id 1FyFUh-0003iD-CI for garchives@archives.gentoo.org; Wed, 05 Jul 2006 22:05:15 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.7/8.13.6) with SMTP id k65M2m5M016330; Wed, 5 Jul 2006 22:02:48 GMT Received: from poseidon.rz.tu-clausthal.de (poseidon.rz.tu-clausthal.de [139.174.2.21]) by robin.gentoo.org (8.13.7/8.13.6) with ESMTP id k65LtHuw024984 for ; Wed, 5 Jul 2006 21:55:17 GMT Received: from poseidon.rz.tu-clausthal.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 0B19E2013CB for ; Wed, 5 Jul 2006 23:55:17 +0200 (CEST) Received: from tu-clausthal.de (poseidon [139.174.2.21]) by poseidon.rz.tu-clausthal.de (Postfix) with ESMTP id E38112013C8 for ; Wed, 5 Jul 2006 23:55:16 +0200 (CEST) Received: from energy.heim10.tu-clausthal.de ([139.174.241.94] verified) by tu-clausthal.de (CommuniGate Pro SMTP 5.1c.1) with ESMTP id 14907188 for gentoo-user@lists.gentoo.org; Wed, 05 Jul 2006 23:55:16 +0200 From: "Hemmann, Volker Armin" To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] linux' IO performance sucks Date: Wed, 5 Jul 2006 23:55:16 +0200 User-Agent: KMail/1.9.3 References: <44AB97C6.4040801@ilievnet.com> In-Reply-To: <44AB97C6.4040801@ilievnet.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="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200607052355.16400.volker.armin.hemmann@tu-clausthal.de> X-Virus-Scanned: by PureMessage V4.7 at tu-clausthal.de X-Archives-Salt: fa88e1e2-b945-4f48-890a-a11848f33b92 X-Archives-Hash: 781d5e9cc031d9ad3233ebcefd653380 On Wednesday 05 July 2006 12:43, Daniel wrote: > > You could also disable all write caching by issuing the command: > > hdparm -W0 /dev/ > emm, no, That only deactivates the on-disk cache and has nothing to do with the kernel caches&buffers. In fact, it has nothing to do with the kernel at all. Deactivating the cache might be a good thing in certain situations, but it usually just decreases performance. So it is usually a BAD THING(tm). -- gentoo-user@gentoo.org mailing list