From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A38E5C47071 for ; Thu, 16 Nov 2023 16:58:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344093AbjKPQ6r (ORCPT ); Thu, 16 Nov 2023 11:58:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37954 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229472AbjKPQ6p (ORCPT ); Thu, 16 Nov 2023 11:58:45 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2D43D49 for ; Thu, 16 Nov 2023 08:58:41 -0800 (PST) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-195-esXLCCycM-uD2bJcbv0YGQ-1; Thu, 16 Nov 2023 16:58:39 +0000 X-MC-Unique: esXLCCycM-uD2bJcbv0YGQ-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Thu, 16 Nov 2023 16:58:44 +0000 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Thu, 16 Nov 2023 16:58:44 +0000 From: David Laight To: 'Linus Torvalds' , Borislav Petkov CC: David Howells , kernel test robot , "oe-lkp@lists.linux.dev" , "lkp@intel.com" , "linux-kernel@vger.kernel.org" , Christian Brauner , Alexander Viro , Jens Axboe , Christoph Hellwig , Christian Brauner , Matthew Wilcox , "ying.huang@intel.com" , "feng.tang@intel.com" , "fengwei.yin@intel.com" Subject: RE: [linus:master] [iov_iter] c9eec08bac: vm-scalability.throughput -16.9% regression Thread-Topic: [linus:master] [iov_iter] c9eec08bac: vm-scalability.throughput -16.9% regression Thread-Index: AQHaGKyzFfqMOen5JUCwmbDFX2u0nbB9KiKw Date: Thu, 16 Nov 2023 16:58:44 +0000 Message-ID: References: <202311061616.cd495695-oliver.sang@intel.com> <3865842.1700061614@warthog.procyon.org.uk> <20231115190938.GGZVUXcuUjI3i1JRAB@fat_crate.local> <20231116154406.GDZVY4xmFvRQt0wGGE@fat_crate.local> In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Li4uDQo+IE9mIGNvdXJzZSwgaXQncyBhbHNvIHBvc3NpYmxlIHRoYXQgd2l0aCBhbGwgdGhlIGZ1 bmN0aW9uIGNhbGwgb3ZlcmhlYWQNCj4gaW50cm9kdWNlZCBieSB0aGUgQ1BVIG1pdGlnYXRpb25z IG9uIG9sZGVyIENQVSdzLCB3ZSBzaG91bGQganVzdCBzYXkNCj4gInJlcCBtb3ZzYiIgaXMgYWx3 YXlzIGNvcnJlY3QgLSBpZiB5b3UgaGF2ZSBhIG5ldyBDUFUgd2l0aCBGU1JNIGl0J3MNCj4gZ29v ZCwgYW5kIGlmIHlvdSBoYXZlIGFuIG9sZCBDUFUgaXQncyBubyB3b3JzZSB0aGFuIHRoZSBob3Jy ZW5kb3VzIENQVQ0KPiBtaXRpZ2F0aW9uIG92ZXJoZWFkIGZvciBmdW5jdGlvbiBjYWxsL3JldHVy bnMuDQoNClVubGVzcyB5b3UgYXJlIHN0dXBpZCBlbm91Z2ggdG8gdXNlIGEgUDQgOi0pDQoNCkkg YWN0dWFsbHkgZG91YnQgYW55b25lIGNhcmVzIChlc3AuIGZvciA2NGJpdCkgYWJvdXQgYW55DQpj cHUgdGhhdCBkb24ndCBvcHRpbWlzZSBsb25nICdyZXAgbW92c2InIChwcmUgc2FuZHkgYnJpZGdl KS4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBS b2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9u IE5vOiAxMzk3Mzg2IChXYWxlcykNCg==