From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14784 invoked by alias); 7 Nov 2014 15:33:32 -0000 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org Received: (qmail 14718 invoked by uid 89); 7 Nov 2014 15:33:31 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.8 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Fri, 07 Nov 2014 15:33:25 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id sA7FX74N031871 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 7 Nov 2014 10:33:07 -0500 Received: from sandy.ghostprotocols.net (ovpn-113-171.phx2.redhat.com [10.3.113.171]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id sA7FX3jv032252 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 7 Nov 2014 10:33:06 -0500 Received: by sandy.ghostprotocols.net (Postfix, from userid 1000) id BB2D81F4F; Fri, 7 Nov 2014 13:33:02 -0200 (BRST) Date: Fri, 07 Nov 2014 15:33:00 -0000 From: Arnaldo Carvalho de Melo To: David Ahern Cc: Peter Zijlstra , Masami Hiramatsu , Hemant Kumar , Namhyung Kim , linux-kernel@vger.kernel.org, srikar@linux.vnet.ibm.com, oleg@redhat.com, hegdevasant@linux.vnet.ibm.com, mingo@redhat.com, systemtap@sourceware.org, aravinda@linux.vnet.ibm.com, penberg@iki.fi, brendan.d.gregg@gmail.com, "yrl.pp-manager.tt@hitachi.com" Subject: Re: [RFC] perf-cache command interface design Message-ID: <20141107153302.GB2137@redhat.com> References: <20141102105557.21708.19032.stgit@hemant-fedora> <87lhnr5sbl.fsf@sejong.aot.lge.com> <54588905.7040002@linux.vnet.ibm.com> <5458CD15.4010101@hitachi.com> <874muew2hk.fsf@sejong.aot.lge.com> <5459E865.6050207@hitachi.com> <545B1DDE.9000202@linux.vnet.ibm.com> <545C80F4.4020905@hitachi.com> <20141107084211.GC23531@worktop.programming.kicks-ass.net> <545CE239.6050205@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <545CE239.6050205@gmail.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.20 (2009-12-10) X-IsSubscribed: yes X-SW-Source: 2014-q4/txt/msg00125.txt.bz2 Em Fri, Nov 07, 2014 at 08:16:09AM -0700, David Ahern escreveu: > On 11/7/14, 1:42 AM, Peter Zijlstra wrote: > >On Fri, Nov 07, 2014 at 05:21:08PM +0900, Masami Hiramatsu wrote: > >>The paths of buildid cache of binary/symbols are not changed. > > > >Could we get an option in .perfconfig to disable the buildid cache? Its > >pointless diskspace wastage for some of us. > > I was going to respond with the same. This: > > [buildid] > # Default, disable using /dev/null > dir = /dev/null > > disables the build-id cache. Hopefully that extends to all the other > caches getting discussed. I think this can even be something Kconfig'ed, and we can provide a .config file for people like Peter that want as barebone a perf he can get over with :-) /me needs to try that last perf Kconfig patchkit... - Arnaldo