From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932669AbcJLKND (ORCPT ); Wed, 12 Oct 2016 06:13:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36496 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752865AbcJLKM5 (ORCPT ); Wed, 12 Oct 2016 06:12:57 -0400 Date: Wed, 12 Oct 2016 12:12:53 +0200 From: Jiri Olsa To: Laura Abbott Cc: Andi Kleen , Arnaldo Carvalho de Melo , Peter Zijlstra , Linux Kernel Mailing List , Ingo Molnar Subject: Re: Intermittent perf build failures Message-ID: <20161012101253.GA18362@krava> References: <5812c8e3-4bb3-6419-4e3e-c20748e44f96@redhat.com> <20161011205927.GA24518@krava> <0babd89f-dd38-89f5-7073-6b74c6692995@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0babd89f-dd38-89f5-7073-6b74c6692995@redhat.com> User-Agent: Mutt/1.7.0 (2016-08-17) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Wed, 12 Oct 2016 10:12:56 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 11, 2016 at 02:18:49PM -0700, Laura Abbott wrote: > On 10/11/2016 01:59 PM, Jiri Olsa wrote: > > On Tue, Oct 11, 2016 at 01:43:36PM -0700, Laura Abbott wrote: > > > Hi, > > > > > > While building today's Fedora rawhide kernel, there was a failure > > > building perf with -j4 [1]: ok, the -j 4 is the problem running "make -j 4 install-bin install-traceevent-plugins" BUILD: Doing 'make -j4' parallel build BUILD: Doing 'make -j4' parallel build will run paralel make instances for install-bin and install-traceevent-plugins which will eventually touch same files and crash.. the main perf Makefile is actualy detecting number of cpus and runs Makefile.perf with -j X option so there's no need to specify it on top level.. you can always customize it via JOBS=X make variable so if you don't specify the -j X option it will run the 'Makefile.perf install-bin install-traceevent-plugins' with -j X set and it should execute sequentialy and fix your problem thanks, jirka