From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19689 invoked by alias); 3 Feb 2011 22:04:40 -0000 Received: (qmail 19679 invoked by uid 22791); 3 Feb 2011 22:04:39 -0000 X-SWARE-Spam-Status: No, hits=-6.8 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,TW_EG,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 03 Feb 2011 22:04:33 +0000 Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id p13M4El1006559 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 3 Feb 2011 17:04:15 -0500 Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p13M4EDr032484; Thu, 3 Feb 2011 17:04:14 -0500 Received: from opsy.redhat.com (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id p13M4CuP031149; Thu, 3 Feb 2011 17:04:13 -0500 Received: by opsy.redhat.com (Postfix, from userid 500) id 83B863784E1; Thu, 3 Feb 2011 15:04:12 -0700 (MST) From: Tom Tromey To: "Ulrich Weigand" Cc: markus@hyperion-imrt.org (Markus Alber), msnyder@vmware.com (Michael Snyder), gdb@sourceware.org, pedro@codesourcery.com Subject: Re: performance of multithreading gets gradually worse under gdb References: <201102032140.p13Le89f031563@d06av02.portsmouth.uk.ibm.com> Date: Thu, 03 Feb 2011 22:04:00 -0000 In-Reply-To: <201102032140.p13Le89f031563@d06av02.portsmouth.uk.ibm.com> (Ulrich Weigand's message of "Thu, 3 Feb 2011 22:40:08 +0100 (CET)") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2011-02/txt/msg00021.txt.bz2 >>>>> "Ulrich" == Ulrich Weigand writes: Ulrich> I guess we should just remove the current_regcache = NULL line now. Yes, it seems so to me as well. Ulrich> (Actually, now that every thread always has a thread_info, the Ulrich> best thing would probably be anyway to hang each thread's regcaches Ulrich> off the thread_info, and do away with the global list completely.) I suppose in this case, invalidating could simply clear a regcache instead of deleting (and subsequently recreating) it. Is that correct? Tom