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: Putting an end to "compiled closures" Date: Sun, 08 Mar 2009 17:18:46 +0100 Message-ID: <871vt8t2c9.fsf@gnu.org> References: <87ljs7cjtf.fsf@gnu.org> <87bpskzukl.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1236529649 2373 80.91.229.12 (8 Mar 2009 16:27:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 8 Mar 2009 16:27:29 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Sun Mar 08 17:28:46 2009 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 4.50) id 1LgLrn-0005PE-MC for guile-devel@m.gmane.org; Sun, 08 Mar 2009 17:28:44 +0100 Original-Received: from localhost ([127.0.0.1]:40532 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LgLqR-0000W7-SI for guile-devel@m.gmane.org; Sun, 08 Mar 2009 12:27:19 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LgLiO-0004Aw-VX for guile-devel@gnu.org; Sun, 08 Mar 2009 12:19:01 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LgLiM-00047u-Pt for guile-devel@gnu.org; Sun, 08 Mar 2009 12:19:00 -0400 Original-Received: from [199.232.76.173] (port=39245 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LgLiM-00047Z-Fu for guile-devel@gnu.org; Sun, 08 Mar 2009 12:18:58 -0400 Original-Received: from main.gmane.org ([80.91.229.2]:33722 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LgLiM-0001ds-07 for guile-devel@gnu.org; Sun, 08 Mar 2009 12:18:58 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1LgLiK-0006Ew-96 for guile-devel@gnu.org; Sun, 08 Mar 2009 16:18:56 +0000 Original-Received: from reverse-83.fdn.fr ([80.67.176.83]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 08 Mar 2009 16:18:56 +0000 Original-Received: from ludo by reverse-83.fdn.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 08 Mar 2009 16:18:56 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 33 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: reverse-83.fdn.fr X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 18 =?iso-8859-1?Q?Vent=F4se?= an 217 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 821D 815D 902A 7EAB 5CEE D120 7FBA 3D4F EB1F 5364 X-OS: i686-pc-linux-gnu User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.90 (gnu/linux) Cancel-Lock: sha1:vAp7WqkrBg3Omo9oJYc9e3ErHmQ= X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) 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:8244 Archived-At: Hello! I did some more fiddling with gsubrs: http://git.savannah.gnu.org/gitweb/?p=guile.git;a=commitdiff;h=8321ed20f69b4c56cb680563160cd30ecac8f509 The change adds a vararg function to invoke gsubrs when the number of arguments is known, thereby eliminating consing. The benchmark is as follows: - before ("subr.bm: subr invocation: simple subr" 700000 total 0.98) ("subr.bm: subr invocation: generic subr" 700000 total 1.39) ("subr.bm: subr invocation: generic subr with rest arg" 700000 total 1.32) ("subr.bm: subr invocation: generic subr with rest arg and 3+ parameters" 700000 total 1.63) - after ("subr.bm: subr invocation: simple subr" 700000 total 1.0) ("subr.bm: subr invocation: generic subr" 700000 total 1.1) ("subr.bm: subr invocation: generic subr with rest arg" 700000 total 1.19) ("subr.bm: subr invocation: generic subr with rest arg and 3+ parameters" 700000 total 1.65) That's again a 20% improvement for gsubrs with no rest argument (`hashq-ref', `substring', `open', `string-upcase', `gettext', etc.) and a 10% for procedures with a rest argument called with less than 3 arguments (e.g., `(cons* 1 2)', `(run-hook h 1)', `(throw 'foo 'bar)', `(make-regexp "foo")'). Thanks, Ludo'.