From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q39D3KJT128601 for ; Mon, 9 Apr 2012 08:03:20 -0500 Received: from smtp3-g21.free.fr (smtp3-g21.free.fr [212.27.42.3]) by cuda.sgi.com with ESMTP id 65bUFRXu96Ykk8vi for ; Mon, 09 Apr 2012 06:03:17 -0700 (PDT) Date: Mon, 9 Apr 2012 15:03:06 +0200 From: Emmanuel Florac Subject: Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?) Message-ID: <20120409150306.4644f98d@galadriel.home> In-Reply-To: References: <20350.9643.379841.771496@tree.ty.sabi.co.UK> <20350.13616.901974.523140@tree.ty.sabi.co.UK> <4F7F7C25.8040605@hardwarefreak.com> <4F8055E4.1000808@hardwarefreak.com> <20120409144847.117b42b5@galadriel.home> Mime-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Stefan Ring Cc: stan@hardwarefreak.com, Linux fs XFS TGUgTW9uLCA5IEFwciAyMDEyIDE0OjUzOjE0ICswMjAwIHZvdXMgw6ljcml2aWV6OgoKPiBJbiB0 aGlzIGNhc2UgaXQgd2FzIGEgMi1kaXNrIFJBSUQgMSwgc28gaXTigJlzIDE1MCBNQi9zIHBlciBk aXNrLiBTZWVtcwo+IHF1aXRlIHJpZ2h0IHRvIG1lLgoKWWVzIHNvcnJ5LCBJIHRob3VnaCBpdCB0 byBiZSB0aGUgNiBkcml2ZXMgYXJyYXkgc3BlZWQuIFNlZW4gaXQganVzdAphZnRlciBoaXR0aW5n ICJzZW5kIiwgYnV0IHRoZXJlIGlzIG5vICJzdXBlcnNlZGUiIGluIG1haWxpbmcgbGlzdHMgOi0p CgotLSAKLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tCkVtbWFudWVsIEZsb3JhYyAgICAgfCAgIERpcmVjdGlvbiB0 ZWNobmlxdWUKICAgICAgICAgICAgICAgICAgICB8ICAgSW50ZWxsaXF1ZQogICAgICAgICAgICAg ICAgICAgIHwJPGVmbG9yYWNAaW50ZWxsaXF1ZS5jb20+CiAgICAgICAgICAgICAgICAgICAgfCAg ICszMyAxIDc4IDk0IDg0IDAyCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KeGZzIG1haWxpbmcgbGlzdAp4ZnNAb3NzLnNnaS5j b20KaHR0cDovL29zcy5zZ2kuY29tL21haWxtYW4vbGlzdGluZm8veGZzCg==