Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754385AbaBFPYJ (ORCPT ); Thu, 6 Feb 2014 10:24:09 -0500 Received: from mail-oa0-f45.google.com ([209.85.219.45]:56406 "EHLO mail-oa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752176AbaBFPYH (ORCPT ); Thu, 6 Feb 2014 10:24:07 -0500 MIME-Version: 1.0 In-Reply-To: <20140206140936.GC26955@infradead.org> References: <20140206135627.GA26955@infradead.org> <20140206140705.GB26955@infradead.org> <20140206140936.GC26955@infradead.org> Date: Thu, 6 Feb 2014 16:24:07 +0100 Message-ID: Subject: Re: [BUG] perf top: --stdio causes continuous refresh From: Stephane Eranian To: Arnaldo Carvalho de Melo Cc: LKML , Peter Zijlstra , "mingo@elte.hu" , Jiri Olsa , Eric Dumazet Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Feb 6, 2014 at 3:09 PM, Arnaldo Carvalho de Melo wrote: > Em Thu, Feb 06, 2014 at 12:07:05PM -0200, Arnaldo Carvalho de Melo escreveu: >> Em Thu, Feb 06, 2014 at 02:58:01PM +0100, Stephane Eranian escreveu: >> > On Thu, Feb 6, 2014 at 2:56 PM, Arnaldo Carvalho de Melo >> > wrote: >> > > Em Wed, Feb 05, 2014 at 10:25:09PM +0100, Stephane Eranian escreveu: >> > >> If you run perf top on 3.14 but you force --stdio mode, perf top >> > >> goes crazy and constantly refreshes the output. >> >> > >> It does that with many older versions of the perf as well on 3.14. >> > >> It runs fine with newt mode. >> >> > >> Works fine with my 3.11 kernel. So something must be broken >> > >> with 3.14. >> >> > >> Can you reproduce the problem as well? >> >> > > Not so far, using my perf/urgent branch: >> >> > I am using tip.git. Or try 3.11, 3.10. > > But my tests are on top of: > > [acme@ssdandy linux]$ uname -r > 3.11.4-101.fc18.x86_64 > > I thought it was a 3.14ish one, building one to try there... > The kernel must be 3.14-rcX, the tool can be any version. > - Arnaldo -- 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/