From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754440Ab3LOMXx (ORCPT ); Sun, 15 Dec 2013 07:23:53 -0500 Received: from nm19-vm0.bullet.mail.bf1.yahoo.com ([98.139.213.162]:34300 "HELO nm19-vm0.bullet.mail.bf1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754085Ab3LOMXw convert rfc822-to-8bit (ORCPT ); Sun, 15 Dec 2013 07:23:52 -0500 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 376344.93298.bm@omp1041.mail.bf1.yahoo.com DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=yUkZfEQUvfFIowjGYTmavFrIeO6QUDZNg/VJrkBa7mnGes+yGhoElyIDKWQ6s8QruiZYnPJjCXjX1/wfw07irZapC1xIZsgZ0juAHgiZ2eK1fGE8h4/qGjS/VrJkBrB8rwPQO0uf//9uzLpgdJmycVyMQn4Z8ciNmAoROYTXqmk=; X-YMail-OSG: tWgV3vgVM1kSX7R_RjnGQC0tSBLPtdj2vieQ499ujbOWgU5 xbW0cZjvoZIInBNykhu5FtsXgHxR6oilaaK6n0BXzcJUW5U_Q2ruMzscCzo1 IZwrWWO3ZZ4RqfH7vDhP1xuX4vQkq9VjB1S5ulbYk76Q8Wr5aYjiHKco.Edp SRjW.kggADeByNJ1H.oKJHBt75AmlsLXoy396T7aq3wULH44ORjwHGBQvQPO X3ZKrMMJQPPmzNWz5dAv17Nm1rp3YftocCcd9wJVJLsy7HmmT2xHJlno4Z50 da7mMiDxYpYXGloCWEidk4icmltvOSQKMW6NyAphK7wgXNOqnV9598XPaVs5 IlcbatHim1lSv3MKHbLnxTE3AYti7lrOKfGbIiqHTgrT940q34M0dz6Gny_d IdLALQzfFNfsqrsqDG9g.c1s3T2bBfeWahimdhhqQJ974PWdE9672.hE0UjF 2DHMw6oNlF0VgAGpMPqqXxQ4qV2FZ4ZcMBHWUfgG.wNYieQ_LW6lUxhQCu3. vEjhfjehY_3BScEpOMPbRZMxN1Qz.znBYIpFSOhpUlW8Qn1IWJmiQXSIfUly aiJNLz0I4t5I1kPd9Tomf1ox328ISrjicBf0h5bKO47vRCFvASQSLcoZBw3S J3f8_G1OPQkBdTJAVTS2GEEJuVu6hXlrH2NNjzs19WkrchUx0DwEZ809ht2a JEM5zFG.cmjzFTM8- X-Rocket-MIMEInfo: 002.001,PiBGcm9tOiBBdXN0aW4gUyBIZW1tZWxnYXJuIDw.Cj4gVGhpcyByZWFsbHkgZGVwZW5kcyBvbiBob3cgeW91IGRlZmluZSAnYmlnJy7CoCBFdmVuIGEgMSUgcGVyZm9ybWFuY2UKPiBpbmNyZWFzZSBpcyBzaWduaWZpY2FudCBmb3IgYSByZWFsdGltZSBzeXN0ZW0sIGFuZCBmb3Igc29tZW9uZSB3aXRoIGEKPiBjbHVzdGVyIG9mIHN5c3RlbXMsIGdldHRpbmcgZXZlbiBhIHNtYWxsIGltcHJvdmVtZW50IGluIHBlcmZvcm1hbmNlIG9uCj4gYWxsIG9mIHRoZSBzeXN0ZW1zIGNvdWxkIG1lYW4gYSBodWdlIGluY3IBMAEBAQE- X-Mailer: YahooMailWebService/0.8.169.609 References: <1386518000.90452.YahooMailNeo@web140004.mail.bf1.yahoo.com> <864985fbeb1d8148439e25ec01f47a67@ixit.cz> <52AAFF89.5080509@gmail.com> Message-ID: <1387110231.99571.YahooMailNeo@web140006.mail.bf1.yahoo.com> Date: Sun, 15 Dec 2013 04:23:51 -0800 (PST) From: John Reply-To: John Subject: Re: [PATCH] expand micro-optimizations in kernel to newer model CPUs To: Austin S Hemmelgarn , David Heidelberger Cc: lkml In-Reply-To: <52AAFF89.5080509@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > From: Austin S Hemmelgarn <> > This really depends on how you define 'big'.  Even a 1% performance > increase is significant for a realtime system, and for someone with a > cluster of systems, getting even a small improvement in performance on > all of the systems could mean a huge increase in effective processing power. > I have resubmitted per H. Peter Anvin's request: http://lkml.indiana.edu/hypermail/linux/kernel/1312.1/04844.html Please cc me on any replies as I am not subscribed to lkml.