Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752871AbdGMTgK (ORCPT <rfc822;w@1wt.eu>);
        Thu, 13 Jul 2017 15:36:10 -0400
Received: from mail-it0-f54.google.com ([209.85.214.54]:38780 "EHLO
        mail-it0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1752545AbdGMTgI (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 13 Jul 2017 15:36:08 -0400
Date: Thu, 13 Jul 2017 20:36:04 +0100
From: Matt Fleming <matt@codeblueprint.co.uk>
To: Andy Lutomirski <luto@kernel.org>
Cc: X86 ML <x86@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Borislav Petkov <bp@alien8.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Mel Gorman <mgorman@suse.de>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        Nadav Amit <nadav.amit@gmail.com>, Rik van Riel <riel@redhat.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Arjan van de Ven <arjan@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v4 00/10] PCID and improved laziness
Message-ID: <20170713193604.GA10316@codeblueprint.co.uk>
References: <cover.1498751203.git.luto@kernel.org>
 <20170630124422.GA12077@codeblueprint.co.uk>
 <20170711113233.GA19177@codeblueprint.co.uk>
 <CALCETrVf87m6CRG3-m=i3wP5DyD5gfcMVJA4KDXb8TarCps2iA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CALCETrVf87m6CRG3-m=i3wP5DyD5gfcMVJA4KDXb8TarCps2iA@mail.gmail.com>
User-Agent: Mutt/1.5.24+42 (6e565710a064) (2015-08-30)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 298
Lines: 10

On Tue, 11 Jul, at 08:00:47AM, Andy Lutomirski wrote:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/luto/misc-tests.git/
> 
> I did:
> 
> $ ./context_switch_latency_64 0 process same

Ah, that's better. I see about a 3.3% speedup with your patches when
running the context-switch benchmark.