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 q3AIDLch189173 for ; Tue, 10 Apr 2012 13:13:21 -0500 Received: from mail.lichtvoll.de (mondschein.lichtvoll.de [194.150.191.11]) by cuda.sgi.com with ESMTP id aLvRX4sVFaU17Z9x for ; Tue, 10 Apr 2012 11:13:19 -0700 (PDT) From: Martin Steigerwald Subject: Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?) Date: Tue, 10 Apr 2012 20:13:15 +0200 References: <201204072057.38286.Martin@lichtvoll.de> (sfid-20120410_161029_715945_ACEF67F7) In-Reply-To: MIME-Version: 1.0 Message-Id: <201204102013.15734.Martin@lichtvoll.de> 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: Christoph Hellwig , xfs@oss.sgi.com QW0gRGllbnN0YWcsIDEwLiBBcHJpbCAyMDEyIHNjaHJpZWIgU3RlZmFuIFJpbmc6Cj4gPiBBbmQg aXMgWEZTIGFsaWduZWQgdG8gdGhlIFJBSUQgNj8KPiA+IAo+ID4gV2hhdCBkb2VzIHhmc19pbmZv IGRpc3BsYXkgb24gaXQ/Cj4gCj4gWWVzLCBpdOKAmXMgYWxpZ25lZC4KPiAKPiBtZXRhLWRhdGE9 L2Rldi9tYXBwZXIvdmdfZGF0YS1sdmhvbWUgaXNpemU9MjU2ICAgIGFnY291bnQ9NCwKPiBhZ3Np emU9NzMyMzM2NTYgYmxrcwo+ICAgICAgICAgID0gICAgICAgICAgICAgICAgICAgICAgIHNlY3Rz ej01MTIgICBhdHRyPTIKPiBkYXRhICAgICA9ICAgICAgICAgICAgICAgICAgICAgICBic2l6ZT00 MDk2ICAgYmxvY2tzPTI5MjkzNDYyNCwKPiBpbWF4cGN0PTUgPSAgICAgICAgICAgICAgICAgICAg ICAgc3VuaXQ9OCAgICAgIHN3aWR0aD0zMiBibGtzCj4gbmFtaW5nICAgPXZlcnNpb24gMiAgICAg ICAgICAgICAgYnNpemU9NDA5NiAgIGFzY2lpLWNpPTAKPiBsb2cgICAgICA9aW50ZXJuYWwgICAg ICAgICAgICAgICBic2l6ZT00MDk2ICAgYmxvY2tzPTE0MzA0MCwgdmVyc2lvbj0yCj4gICAgICAg ICAgPSAgICAgICAgICAgICAgICAgICAgICAgc2VjdHN6PTUxMiAgIHN1bml0PTggYmxrcywKPiBs YXp5LWNvdW50PTEgcmVhbHRpbWUgPW5vbmUgICAgICAgICAgICAgICAgICAgZXh0c3o9NDA5NiAg IGJsb2Nrcz0wLAo+IHJ0ZXh0ZW50cz0wCgpIbW1tLCBzbyBpdHMgbm90IHRoZSBhbGlnbm1lbnQu IHhmc19pbmZvIG91dHB1dCBsb29rcyBzYW5lIG90aGVyd2lzZS4KCkkgaGF2ZSBubyBmdXJ0aGVy IGlkZWFzIGZvciBub3cuIEJ1dCBvdGhlcnMgaGFkIGl0IHNlZW1zLiAoUmVhZGluZyByZXN0IG9m IApuZXcgbWVzc2FnZXMgaW4gdGhyZWFkLikKCkNpYW8sCi0tIApNYXJ0aW4gJ0hlbGlvcycgU3Rl aWdlcndhbGQgLSBodHRwOi8vd3d3LkxpY2h0dm9sbC5kZQpHUEc6IDAzQjAgMEQ2QyAwMDQwIDA3 MTAgNEFGQSAgQjgyRiA5OTFCIEVBQUMgQTU5OSA4NEM3CgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwp4ZnMgbWFpbGluZyBsaXN0Cnhmc0Bvc3Muc2dpLmNv bQpodHRwOi8vb3NzLnNnaS5jb20vbWFpbG1hbi9saXN0aW5mby94ZnMK