From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20753 invoked by alias); 7 Jul 2006 19:51:35 -0000 Received: (qmail 20745 invoked by uid 22791); 7 Jul 2006 19:51:35 -0000 X-Spam-Status: No, hits=-3.1 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 07 Jul 2006 19:51:32 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k67JpV9g025135; Fri, 7 Jul 2006 15:51:31 -0400 Received: from pobox.toronto.redhat.com (pobox.toronto.redhat.com [172.16.14.4]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k67JpUXZ029484; Fri, 7 Jul 2006 15:51:30 -0400 Received: from touchme.toronto.redhat.com (IDENT:postfix@touchme.toronto.redhat.com [172.16.14.9]) by pobox.toronto.redhat.com (8.12.8/8.12.8) with ESMTP id k67JpUve021300; Fri, 7 Jul 2006 15:51:30 -0400 Received: from ton.toronto.redhat.com (ton.toronto.redhat.com [172.16.14.15]) by touchme.toronto.redhat.com (Postfix) with ESMTP id 4E0A58002A2; Fri, 7 Jul 2006 15:51:30 -0400 (EDT) Received: from ton.toronto.redhat.com (localhost.localdomain [127.0.0.1]) by ton.toronto.redhat.com (8.13.1/8.13.1) with ESMTP id k67JpTAi012544; Fri, 7 Jul 2006 15:51:30 -0400 Received: (from fche@localhost) by ton.toronto.redhat.com (8.13.1/8.13.1/Submit) id k67JpNB0012541; Fri, 7 Jul 2006 15:51:23 -0400 X-Authentication-Warning: ton.toronto.redhat.com: fche set sender to fche@redhat.com using -f To: Heiko Carstens Cc: Martin Schwidefsky , Jan Glauber , systemtap@sources.redhat.com Subject: Re: [PATCH] kprobes for s390 architecture References: <20060623150344.GL9446@osiris.boeblingen.de.ibm.com> <20060623222106.GA25410@osiris.ibm.com> <20060624113641.GB10403@osiris.ibm.com> <1151421789.5390.65.camel@localhost> <20060628055857.GA9452@osiris.boeblingen.de.ibm.com> <20060707172333.GA12068@localhost.localdomain> <20060707172555.GA10452@osiris.ibm.com> From: fche@redhat.com (Frank Ch. Eigler) Date: Fri, 07 Jul 2006 19:51:00 -0000 In-Reply-To: <20060707172555.GA10452@osiris.ibm.com> Message-ID: User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q3/txt/msg00025.txt.bz2 Heiko Carstens writes: > [...] > > It works, and I guess at this point is the only way to do it. I'll send out a > > full patch with this and the other cleanups later. > > How fast is this if you have to exchange several hundred instructions? That's a very appropriate question. Related to it is in general how fast is it to insert and remove ordinary breakpoints on even non-s390 platforms. Several RH folks recently found that probe kernel.function("*") {} took only a few seconds to insert the probes, but a few *minutes* to remove them at session shutdown. - FChE