Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx2.netapp.com ([216.240.18.37]:52192 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753815Ab2EHN36 (ORCPT ); Tue, 8 May 2012 09:29:58 -0400 From: "Myklebust, Trond" To: "J. Bruce Fields" CC: Daniel Pocock , "linux-nfs@vger.kernel.org" Subject: Re: extremely slow nfs when sync enabled Date: Tue, 8 May 2012 13:29:40 +0000 Message-ID: <1336483786.2861.8.camel@lade.trondhjem.org> References: <4FA5E950.5080304@pocock.com.au> <1336328594.2593.14.camel@lade.trondhjem.org> <4FA6EBD4.7040308@pocock.com.au> <1336340993.2600.11.camel@lade.trondhjem.org> <4FA6F75E.6090300@pocock.com.au> <1336344160.2600.30.camel@lade.trondhjem.org> <4FA793AB.70107@pocock.com.au> <4FA7D54E.9080309@pocock.com.au> <20120507171759.GA10137@fieldses.org> <4FA90C63.7000505@pocock.com.au> <20120508124559.GA15448@fieldses.org> In-Reply-To: <20120508124559.GA15448@fieldses.org> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org List-ID: T24gVHVlLCAyMDEyLTA1LTA4IGF0IDA4OjQ1IC0wNDAwLCBKLiBCcnVjZSBGaWVsZHMgd3JvdGU6 DQo+IE9uIFR1ZSwgTWF5IDA4LCAyMDEyIGF0IDEyOjA2OjU5UE0gKzAwMDAsIERhbmllbCBQb2Nv Y2sgd3JvdGU6DQo+ID4gDQo+ID4gDQo+ID4gT24gMDcvMDUvMTIgMTc6MTgsIEouIEJydWNlIEZp ZWxkcyB3cm90ZToNCj4gPiA+IEhvdyBtYW55IGZpbGUgY3JlYXRlcyBwZXIgc2Vjb25kPw0KPiA+ ID4gDQo+ID4gDQo+ID4gSSByYW46DQo+ID4gbmZzc3RhdCAtcyAtbyBhbGwgLWwgLVo1DQo+ID4g YW5kIGR1cmluZyB0aGUgdGVzdCAodW5wYWNraW5nIHRoZSB0YXJiYWxsKSwgSSBzZWUgbnVtYmVy cyBsaWtlIHRoZXNlDQo+ID4gZXZlcnkgNSBzZWNvbmRzIGZvciBhYm91dCAyIG1pbnV0ZXM6DQo+ ID4gDQo+ID4gbmZzIHYzIHNlcnZlciAgICAgICAgdG90YWw6ICAgICAgMzE5DQo+ID4gLS0tLS0t LS0tLS0tLSAtLS0tLS0tLS0tLS0tIC0tLS0tLS0tDQo+ID4gbmZzIHYzIHNlcnZlciAgICAgIGdl dGF0dHI6ICAgICAgICAxDQo+ID4gbmZzIHYzIHNlcnZlciAgICAgIHNldGF0dHI6ICAgICAgMTI2 DQo+ID4gbmZzIHYzIHNlcnZlciAgICAgICBhY2Nlc3M6ICAgICAgICA2DQo+ID4gbmZzIHYzIHNl cnZlciAgICAgICAgd3JpdGU6ICAgICAgIDYxDQo+ID4gbmZzIHYzIHNlcnZlciAgICAgICBjcmVh dGU6ICAgICAgIDYxDQo+ID4gbmZzIHYzIHNlcnZlciAgICAgICAgbWtkaXI6ICAgICAgICAzDQo+ ID4gbmZzIHYzIHNlcnZlciAgICAgICBjb21taXQ6ICAgICAgIDYxDQo+IA0KPiBPSywgc28gaXQn cyBwcm9iYWJseSBjcmVhdGluZyBhYm91dCA2MCBuZXcgZmlsZXMsIGVhY2ggcmVxdWlyaW5nIGEN Cj4gY3JlYXRlLCB3cml0ZSwgY29tbWl0LCBhbmQgdHdvIHNldGF0dHJzPw0KPiANCj4gRWFjaCBv ZiB0aG9zZSBvcGVyYXRpb25zIGlzIHN5bmNocm9ub3VzLCBzbyBwcm9iYWJseSBoYXMgdG8gd2Fp dCBmb3IgYXQNCj4gbGVhc3Qgb25lIGRpc2sgc2Vlay4gIEFib3V0IDMwMCBzdWNoIG9wZXJhdGlv bnMgZXZlcnkgNSBzZWNvbmRzIGlzIGFib3V0DQo+IDYwIHBlciBzZWNvbmQsIG9yIGFib3V0IDE2 bXMgZWFjaC4gIFRoYXQgZG9lc24ndCBzb3VuZCBzbyBmYXIgb2ZmLg0KPiANCj4gKEkgd29uZGVy IHdoeSBpdCBuZWVkcyB0d28gc2V0YXR0cnM/KQ0KDQpJdCBpcyBhbiB1bnRhciB3b3JrbG9hZCwg c28gaXQgbmVlZHMgdG8gcmVzZXQgdGhlIGF0aW1lL210aW1lIGFmdGVyDQp3cml0aW5nIHRoZSBm aWxlLg0KDQpOb3RlIHRoYXQgdGhlIGFib3ZlIHdvcmtsb2FkIGlzIGV4YWN0bHkgdGhlIG9uZSBJ IHdhcyB0YXJnZXRpbmcgd2l0aCB0aGUNCnVuc3RhYmxlIGZpbGUgY3JlYXRpb24gZHJhZnQ6DQoN Cmh0dHA6Ly90b29scy5pZXRmLm9yZy9odG1sL2RyYWZ0LW15a2xlYnVzdC1uZnN2NC11bnN0YWJs ZS1maWxlLWNyZWF0aW9uLTAxDQoNCkknbSBnb2luZyB0byB0cnkgcHVzaGluZyB0aGF0IGFnYWlu IGZvciBORlN2NC4zLi4uDQoNCi0tIA0KVHJvbmQgTXlrbGVidXN0DQpMaW51eCBORlMgY2xpZW50 IG1haW50YWluZXINCg0KTmV0QXBwDQpUcm9uZC5NeWtsZWJ1c3RAbmV0YXBwLmNvbQ0Kd3d3Lm5l dGFwcC5jb20NCg0K