From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Bityutskiy, Artem" Subject: Re: [PATCH] sysctl: Add a feature to drop caches selectively Date: Fri, 27 Jun 2014 09:09:33 +0000 Message-ID: <1403860172.3954.7.camel@sauron.fi.intel.com> References: <1403626213-7691-1-git-send-email-mcsim.planeta@gmail.com> <1403677528.7903.103.camel@sauron.fi.intel.com> <20140626010606.GT4453@dastard> <1403763199.20275.39.camel@sauron.fi.intel.com> <53ABF7C4.1000906@itwm.fraunhofer.de> <1403782263.20275.59.camel@sauron.fi.intel.com> <20140627084139.GA29704@citd.de> <1403860094.3954.6.camel@sauron.fi.intel.com> Reply-To: "Bityutskiy, Artem" Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "linux-kernel@vger.kernel.org" , "mcsim.planeta@gmail.com" , "bernd.schubert@itwm.fraunhofer.de" , "lczerner@redhat.com" , "viro@zeniv.linux.org.uk" , "thomas.knauth@gmx.de" , "rientjes@google.com" , "linux-fsdevel@vger.kernel.org" , "david@fromorbit.com" To: "ms@citd.de" Return-path: In-Reply-To: <1403860094.3954.6.camel@sauron.fi.intel.com> Content-Language: en-US Content-ID: <49BEF8476532AD4E85F94D8BA5AC9506@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org T24gRnJpLCAyMDE0LTA2LTI3IGF0IDEyOjA4ICswMzAwLCBBcnRlbSBCaXR5dXRza2l5IHdyb3Rl Og0KPiBUbyBtYWtlIDEwMCUgc3VyZSB5b3UnZCBub3Qgb25seSBuZWVkIHRvIGRyb3AgVkZTLWxl dmVsIGNhY2hlcyBidXQgYWxzbw0KPiBmaWxlLXN5c3RlbS1sZXZlbCBjYWNoZXMuIEluZGVlZCwg ZmlsZS1zeXN0ZW1zIGhhdmUgdGhlaXIgb3duIHJhdGhlcg0KU29ycnksIEkgd2FudGVkIHRvIHNh eSAicmF0aGVyIGNvbXBsZXgiIGhlcmUNCj4gYnVmZmVycyBmb3IgZGlmZmVyZW50IGluZGV4aW5n IGRhdGEtc3RydWN0dXJlcywgZXRjLiBUaGUgdW5tb3VudC9tb3VudA0KPiBzZXF1ZW5jZSB0YWtl cyBjYXJlIG9mIHRoYXQuDQo+IA0KDQotLSANCkJlc3QgUmVnYXJkcywNCkFydGVtIEJpdHl1dHNr aXkNCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLQpJbnRlbCBGaW5sYW5kIE95ClJlZ2lzdGVyZWQgQWRkcmVzczogUEwg MjgxLCAwMDE4MSBIZWxzaW5raSAKQnVzaW5lc3MgSWRlbnRpdHkgQ29kZTogMDM1NzYwNiAtIDQg CkRvbWljaWxlZCBpbiBIZWxzaW5raSAKClRoaXMgZS1tYWlsIGFuZCBhbnkgYXR0YWNobWVudHMg bWF5IGNvbnRhaW4gY29uZmlkZW50aWFsIG1hdGVyaWFsIGZvcgp0aGUgc29sZSB1c2Ugb2YgdGhl IGludGVuZGVkIHJlY2lwaWVudChzKS4gQW55IHJldmlldyBvciBkaXN0cmlidXRpb24KYnkgb3Ro ZXJzIGlzIHN0cmljdGx5IHByb2hpYml0ZWQuIElmIHlvdSBhcmUgbm90IHRoZSBpbnRlbmRlZApy ZWNpcGllbnQsIHBsZWFzZSBjb250YWN0IHRoZSBzZW5kZXIgYW5kIGRlbGV0ZSBhbGwgY29waWVz Lgo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753220AbaF0JJ7 (ORCPT ); Fri, 27 Jun 2014 05:09:59 -0400 Received: from mga03.intel.com ([143.182.124.21]:20840 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753151AbaF0JJ5 (ORCPT ); Fri, 27 Jun 2014 05:09:57 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,559,1400050800"; d="scan'208";a="450677129" From: "Bityutskiy, Artem" To: "ms@citd.de" CC: "linux-kernel@vger.kernel.org" , "mcsim.planeta@gmail.com" , "bernd.schubert@itwm.fraunhofer.de" , "lczerner@redhat.com" , "viro@zeniv.linux.org.uk" , "thomas.knauth@gmx.de" , "rientjes@google.com" , "linux-fsdevel@vger.kernel.org" , "david@fromorbit.com" Subject: Re: [PATCH] sysctl: Add a feature to drop caches selectively Thread-Topic: [PATCH] sysctl: Add a feature to drop caches selectively Thread-Index: AQHPkeeCpfMUQ+EQuE+W4K3+jm90aQ== Date: Fri, 27 Jun 2014 09:09:33 +0000 Message-ID: <1403860172.3954.7.camel@sauron.fi.intel.com> References: <1403626213-7691-1-git-send-email-mcsim.planeta@gmail.com> <1403677528.7903.103.camel@sauron.fi.intel.com> <20140626010606.GT4453@dastard> <1403763199.20275.39.camel@sauron.fi.intel.com> <53ABF7C4.1000906@itwm.fraunhofer.de> <1403782263.20275.59.camel@sauron.fi.intel.com> <20140627084139.GA29704@citd.de> <1403860094.3954.6.camel@sauron.fi.intel.com> In-Reply-To: <1403860094.3954.6.camel@sauron.fi.intel.com> Reply-To: "Bityutskiy, Artem" Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.237.72.81] Content-Type: text/plain; charset="utf-8" Content-ID: <49BEF8476532AD4E85F94D8BA5AC9506@intel.com> MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id s5R9A9OR023878 On Fri, 2014-06-27 at 12:08 +0300, Artem Bityutskiy wrote: > To make 100% sure you'd not only need to drop VFS-level caches but also > file-system-level caches. Indeed, file-systems have their own rather Sorry, I wanted to say "rather complex" here > buffers for different indexing data-structures, etc. The unmount/mount > sequence takes care of that. > -- Best Regards, Artem Bityutskiy --------------------------------------------------------------------- Intel Finland Oy Registered Address: PL 281, 00181 Helsinki Business Identity Code: 0357606 - 4 Domiciled in Helsinki This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I