From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.devel Subject: Re: instruction-level tracing Date: Thu, 16 Sep 2010 22:29:49 +0200 Message-ID: <877hill9du.fsf@gnu.org> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: dough.gmane.org 1284670492 15536 80.91.229.12 (16 Sep 2010 20:54:52 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 16 Sep 2010 20:54:52 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Thu Sep 16 22:54:50 2010 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1OwLTm-0001cY-EG for guile-devel@m.gmane.org; Thu, 16 Sep 2010 22:54:50 +0200 Original-Received: from localhost ([127.0.0.1]:59329 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwLTl-0000wK-4L for guile-devel@m.gmane.org; Thu, 16 Sep 2010 16:54:49 -0400 Original-Received: from [140.186.70.92] (port=52786 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwL61-0005U3-T9 for guile-devel@gnu.org; Thu, 16 Sep 2010 16:31:16 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OwL5l-0002d0-Fm for guile-devel@gnu.org; Thu, 16 Sep 2010 16:30:02 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:50954) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OwL5l-0002c2-9W for guile-devel@gnu.org; Thu, 16 Sep 2010 16:30:01 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OwL5g-0003MD-JU for guile-devel@gnu.org; Thu, 16 Sep 2010 22:29:56 +0200 Original-Received: from yoda.fdn.fr ([80.67.169.18]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 16 Sep 2010 22:29:56 +0200 Original-Received: from ludo by yoda.fdn.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 16 Sep 2010 22:29:56 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 19 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: yoda.fdn.fr X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 30 Fructidor an 218 de la =?iso-8859-1?Q?R=E9volutio?= =?iso-8859-1?Q?n?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 83C4 F8E5 10A3 3B4C 5BEA D15D 77DD 95E2 EA52 ECF4 X-OS: x86_64-unknown-linux-gnu User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) Cancel-Lock: sha1:6GN7MSDvfHZdsM/4hzds4PS5ExA= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:10925 Archived-At: Hi Andy, Andy Wingo writes: > I de-bitrotted instruction-level tracing in the VM. Ideally it would > display like ,disassemble does, but that would take some more work. > > Still, Guile's speed is mostly proportional to how many instructions are > executed, besides amount of garbage consed, and this view can be > interesting to people looking to squeeze more performance out of their > code, or find ways that the compiler does things wrong. > > scheme@(guile-user)> (use-modules (srfi srfi-1)) > scheme@(guile-user)> ,trace (fold cons '() '(a b c d)) #:instructions? #t This looks like a useful tool, yes! Thanks, Ludo’.