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: wip-cse Date: Wed, 25 Apr 2012 01:14:54 +0200 Message-ID: <87vckobu35.fsf@gnu.org> References: <87bomr30xz.fsf@pobox.com> <874nsjuzok.fsf@gnu.org> <87sjg31e11.fsf@pobox.com> <87vckyil6r.fsf@gnu.org> <87ehrdwnfm.fsf@pobox.com> <87mx61ytve.fsf@gnu.org> <87397tt1jx.fsf@pobox.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1335309304 9143 80.91.229.3 (24 Apr 2012 23:15:04 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 24 Apr 2012 23:15:04 +0000 (UTC) Cc: guile-devel@gnu.org To: Andy Wingo Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Wed Apr 25 01:15:04 2012 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1SMowp-0003MQ-DO for guile-devel@m.gmane.org; Wed, 25 Apr 2012 01:15:03 +0200 Original-Received: from localhost ([::1]:50611 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SMowo-0002t5-PH for guile-devel@m.gmane.org; Tue, 24 Apr 2012 19:15:02 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:56174) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SMowk-0002si-D5 for guile-devel@gnu.org; Tue, 24 Apr 2012 19:14:59 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SMowi-0007fq-NO for guile-devel@gnu.org; Tue, 24 Apr 2012 19:14:57 -0400 Original-Received: from xanadu.aquilenet.fr ([88.191.123.111]:40810) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SMowi-0007fR-HZ for guile-devel@gnu.org; Tue, 24 Apr 2012 19:14:56 -0400 Original-Received: from localhost (xanadu.aquilenet.fr [127.0.0.1]) by xanadu.aquilenet.fr (Postfix) with ESMTP id 6C5D5AABC; Wed, 25 Apr 2012 01:14:55 +0200 (CEST) Original-Received: from xanadu.aquilenet.fr ([127.0.0.1]) by localhost (xanadu.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mp+CbE6DOPxe; Wed, 25 Apr 2012 01:14:55 +0200 (CEST) Original-Received: from pluto (reverse-83.fdn.fr [80.67.176.83]) by xanadu.aquilenet.fr (Postfix) with ESMTPSA id AE78DAA55; Wed, 25 Apr 2012 01:14:54 +0200 (CEST) X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 7 =?iso-8859-1?Q?Flor=E9al?= an 220 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: 83C4 F8E5 10A3 3B4C 5BEA D15D 77DD 95E2 EA52 ECF4 X-OS: x86_64-unknown-linux-gnu In-Reply-To: <87397tt1jx.fsf@pobox.com> (Andy Wingo's message of "Tue, 24 Apr 2012 20:41:38 +0200") User-Agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.93 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 88.191.123.111 X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:14308 Archived-At: Hi, Andy Wingo skribis: > On Tue 24 Apr 2012 18:31, ludo@gnu.org (Ludovic Court=C3=A8s) writes: > >> Andy Wingo skribis: >> >>> I spent some time poking at vlists and ended up squeezing out a little >>> bit of performance. >> >> Any figures? > > Well, last time I checked, with the patch compiling peval.scm was 2.10 > seconds, compared to 2.35 without. Not tiny, not huge. OK. Would be nice to check with the micro-benchs in vlists.bm as well. >> Did you try fiddling with =E2=80=98block-growth-factor=E2=80=99, as sugg= ested earlier? > > No I did not. Another thing one could fiddle with would be the block > size for a new list head. I feel like we need more metrics though: a > distribution of sizes of blocks, numbers of blocks in a vlist, hash > collisions per block, etc. I'll merge this to master soon and we can > check what impact the new hash function has on performance. Nice. Thanks, Ludo=E2=80=99.