Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752992Ab3IJNWX (ORCPT ); Tue, 10 Sep 2013 09:22:23 -0400 Received: from mail-bk0-f54.google.com ([209.85.214.54]:44828 "EHLO mail-bk0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752939Ab3IJNWU (ORCPT ); Tue, 10 Sep 2013 09:22:20 -0400 Date: Tue, 10 Sep 2013 15:22:15 +0200 From: Ingo Molnar To: eranian@gmail.com Cc: Ramkumar Ramachandra , Peter Zijlstra , Linus Torvalds , Linux Kernel Mailing List , Arnaldo Carvalho de Melo , Thomas Gleixner , Andi Kleen Subject: Re: PEBS bug on HSW: "Unexpected number of pebs records 10" (was: Re: [GIT PULL] perf changes for v3.12) Message-ID: <20130910132215.GA7537@gmail.com> References: <20130903132933.GA24955@gmail.com> <20130909100544.GI31370@twins.programming.kicks-ass.net> <20130910115306.GA6091@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 830 Lines: 29 * Stephane Eranian wrote: > On Tue, Sep 10, 2013 at 5:51 AM, Ramkumar Ramachandra > wrote: > > Stephane Eranian wrote: > >> a simple multithreaded program where > >> #threads >> #CPUs > > > > To put it another way, does Intel's HT work for CPU intensive and IO > > minimal tasks? I think HT assumes some amount of inefficient IO > > coupled with pure CPU usage. > > But your remark has nothing to do with the PMU issue. To quote Al Viro: "One name: Mark V. Shaney..." Update your email filters if it gets annoying. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/