Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx2.netapp.com ([216.240.18.37]:42487 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759340Ab2CAOAe (ORCPT ); Thu, 1 Mar 2012 09:00:34 -0500 From: "Myklebust, Trond" To: Steven Wilton CC: "linux-nfs@vger.kernel.org" Subject: Re: NFS client (3.0.0-3.2.8) high system CPU Date: Thu, 1 Mar 2012 14:00:32 +0000 Message-ID: <1330610432.6218.11.camel@lade.trondhjem.org> References: <33F3252F24B63C42BA48F5636E0C821001FA434BBCA3@exchange.corporate.eftel.com> In-Reply-To: <33F3252F24B63C42BA48F5636E0C821001FA434BBCA3@exchange.corporate.eftel.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org List-ID: T24gVGh1LCAyMDEyLTAzLTAxIGF0IDA4OjUyICswODAwLCBTdGV2ZW4gV2lsdG9uIHdyb3RlOg0K PiBIaSwNCj4gDQo+IEkndmUgYmVlbiB0cnlpbmcgdG8gdHJhY2sgZG93biBhbiBpc3N1ZSB3ZSd2 ZSBzdGFydGVkIHNlZWluZyBvbiBhIGJ1bmNoIG9mIE5GUyBjbGllbnRzIHdoZXJlIHRoZSBwZXJj ZW50YWdlIG9mIENQVSB0aW1lIHNwZW50IGJ5IHRoZSBzeXN0ZW0gaGFzIGluY3JlYXNlZCBmb3Ig dGhlIHBhc3QgbW9udGggKGl0IHdhcyBwcmV2aW91c2x5IHVzaW5nIHJvdWdobHkgZXF1YWwgc3lz dGVtL3VzZXIgdGltZSwgd2hpbGUgbm93IHRoZSBzeXN0ZW0gdGltZSBpcyBhcm91bmQgM3ggdGhl IHVzZXIgdGltZSkuICBUaGUgaW5mb3JtYXRpb24gdGhhdCBJIGhhdmUgaXMgYXMgZm9sbG93czoN Cj4gDQo+IC0gQWZ0ZXIgcmVib290aW5nIHRoZSBzZXJ2ZXIsIHRoZSB1c2VyL3N5c3RlbSBDUFUg dGltZXMgbG9vayBnb29kIChyb3VnaGx5IGVxdWFsKQ0KPiAtIEFmdGVyIDI0IGhvdXJzIG9mIGhl YXZ5IGFjdGl2aXR5IHRoZSBzeXN0ZW0gQ1BVIHRpbWUgaW5jcmVhc2VzIHRvIGFyb3VuZCAzLTR4 IHRoZSB1c2VyIENQVSB0aW1lDQo+IC0gSWYgSSBydW4gImVjaG8gMiA+IC9wcm9jL3N5cy92bS9k cm9wX2NhY2hlcyIgdGhlIHN5c3RlbSBDUFUgdGltZSBkcm9wcyBiYWNrIGRvd24gdG8gcm91Z2hs eSB0aGUgc2FtZSBhcyB1c2VyDQo+IA0KPiBUaGUgbWFpbiBkaWZmZXJlbmNlIHRoYXQgSSBjYW4g c2VlIGluIHNsYWJ0b3AgYmV0d2VlbiBhIHN5c3RlbSBydW5uaW5nIGF0IGhpZ2ggbG9hZCBhbmQg Im5vcm1hbCIgbG9hZCBpcyB0aGUgbnVtYmVyIG9mIG5mc19pbm9kZV9jYWNoZSBvYmplY3RzIChh cyBzaG93biBiZWxvdykuICBJIHRyaWVkIHRvIGluY3JlYXNlIHRoZSBpaGFzaF9lbnRyaWVzIGFu ZCBkaGFzaF9lbnRyaWVzIGtlcm5lbCBwYXJhbWV0ZXJzLCBidXQgdGhpcyBkaWQgbm90IGZpeCB0 aGUgcHJvYmxlbS4gIEkgaGF2ZSBub3QgZm91bmQgYW55IG90aGVyIHN1Z2dlc3Rpb25zIG9uIGhv dyB0byByZXNvbHZlIGlzc3VlcyBjYXVzZWQgYnkgbGFyZ2UgbmZzIGlub2RlIGNhY2hlcy4NCj4g DQo+IEkgaGF2ZSB0cmllZCB2YXJpb3VzIGtlcm5lbHMgYmV0d2VlbiAzLjAuMCBhbmQgMy4yLjQs IGFuZCB0aGUgbWFjaGluZXMgYXJlIGN1cnJlbnRseSBydW5uaW5nIGEgMy4wLjIyIGtlcm5lbC4g IFRoZSBtYWNoaW5lcyBoYXZlIDhHQiBSQU0sIGFuZCBoYXZlIDMgTkZTdjQgbW91bnRzIGFuZCBv bmUgTkZTdjMgbW91bnQgKHdpdGggdGhlIG1ham9yaXR5IG9mIHRoZSBmaWxlcyB0aGF0IHRoZXkg YWNjZXNzIGJlaW5nIG9uIG9uZSBvZiB0aGUgTkZTdjQgbW91bnQgcG9pbnRzLCBiZWluZyBhIG1h aWxkaXIgc3R5bGUgbWFpbCBzcG9vbCkuDQo+IA0KPiBJIGhhdmUgaW5jcmVhc2VkIC9wcm9jL3N5 cy92bS92ZnNfY2FjaGVfcHJlc3N1cmUgdG8gMTAwMDAsIHdoaWNoIGhhcyByZXNvbHZlZCB0aGUg cHJvYmxlbSBmb3Igbm93LCBob3dldmVyIEkgYmVsaWV2ZSB0aGF0IHRoZSByZWFzb24gd2Ugc3Rh cnRlZCBzZWVpbmcgdGhlIGlzc3VlIGlzIHRoYXQgd2UgYWRkZWQgYSBsb3Qgb2YgZXh0cmEgdXNl cnMgb250byB0aGUgc3lzdGVtLCByZXN1bHRpbmcgaW4gYWNjZXNzIHRvIGEgbGFyZ2VyIG51bWJl ciBvZiBmaWxlcyBmb3IgZWFjaCBvZiB0aGUgY2xpZW50cy4gIEkgYW0gbm90IGNvbmZpZGVudCB0 aGF0IGZ1dHVyZSBncm93dGggd2lsbCBzdGF5IGJlbG93IHdoYXRldmVyIHRocmVzaG9sZCB3ZSBo YWQgZXhjZWVkZWQgdG8gY2F1c2UgdGhlIGV4Y2Vzc2l2ZSBzeXN0ZW0gQ1BVIGxvYWQsIHNpbmNl IHRoZSBwcm9ibGVtIHNlZW1lZCB0byBhcHBlYXIgYXQgYXJvdW5kIDEsMDAwLDAwMCBuZnNfaW5v ZGVfY2FjaGUgZW50cmllcyBpbiBzbGFidG9wLCBhbmQgdGhlIE5GUyBjbGllbnRzIGFyZSBmbG9h dGluZyBiZXR3ZWVuIDUwMCwwMDAgYW5kIDkwMCwwMDAgaW5vZGVfY2FjaGUgZW50cmllcy4NCj4g DQo+IEhlbHAgcGxlYXNlIDopLCBhbmQgcGxlYXNlIGxldCBtZSBrbm93IGlmIEkgY2FuIHByb3Zp ZGUgYW55IG1vcmUgaW5mb3JtYXRpb24gdG8gYXNzaXN0IGluIGRlYnVnZ2luZy4NCg0KVGhpcyBs b29rcyBsaWtlIG1vcmUgb2YgYSBwcm9ibGVtIGZvciB0aGUgbWVtb3J5IG1hbmFnZW1lbnQgZm9s a3MgcmF0aGVyDQp0aGFuIHRoZSBORlMgdGVhbS4gVGhlIE5GUyBjbGllbnQgaGFzIHZlcnkgbGlt aXRlZCBjb250cm9sIG92ZXIgdGhlDQpjYWNoaW5nIG9mIGlub2Rlcy4NCg0KT25lIHRoaW5nIHRo YXQgeW91IG1pZ2h0IHRyeSBkb2luZyBpcyB0dXJuaW5nIG9mZiByZWFkZGlycGx1cyAodXNpbmcg dGhlDQotb25vcmRpcnBsdXMgbW91bnQgb3B0aW9uKSBhbmQgc2VlaW5nIGlmIHRoYXQgY2F1c2Vz IGZld2VyIGlub2RlcyB0byBiZQ0KY3JlYXRlZCBpbiB0aGUgZmlyc3QgcGxhY2UuDQoNCkNoZWVy cw0KICBUcm9uZA0KLS0gDQpUcm9uZCBNeWtsZWJ1c3QNCkxpbnV4IE5GUyBjbGllbnQgbWFpbnRh aW5lcg0KDQpOZXRBcHANClRyb25kLk15a2xlYnVzdEBuZXRhcHAuY29tDQp3d3cubmV0YXBwLmNv bQ0KDQo=