From owner-freebsd-performance@FreeBSD.ORG Fri Feb 8 22:38:33 2008 Return-Path: <owner-freebsd-performance@FreeBSD.ORG> Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6883916A46E for <freebsd-performance@freebsd.org>; Fri, 8 Feb 2008 22:38:33 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id D27D513C4EE for <freebsd-performance@freebsd.org>; Fri, 8 Feb 2008 22:38:32 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1JNbra-00030f-5Z for freebsd-performance@freebsd.org; Fri, 08 Feb 2008 22:38:30 +0000 Received: from 78-0-94-116.adsl.net.t-com.hr ([78.0.94.116]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for <freebsd-performance@freebsd.org>; Fri, 08 Feb 2008 22:38:30 +0000 Received: from ivoras by 78-0-94-116.adsl.net.t-com.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for <freebsd-performance@freebsd.org>; Fri, 08 Feb 2008 22:38:30 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-performance@freebsd.org From: Ivan Voras <ivoras@freebsd.org> Date: Fri, 08 Feb 2008 23:38:12 +0100 Lines: 45 Message-ID: <foill0$dfn$1@ger.gmane.org> References: <4796C717.9000507@cederstrand.dk> <20080123193400.N63024@fledge.watson.org> <4797A245.7080202@cederstrand.dk> <20080123202433.E63024@fledge.watson.org> <4797A802.8060509@FreeBSD.org> <47A0BFE7.4070708@cederstrand.dk> <20080130190000.GA18333@lor.one-eyed-alien.net> <47AC15A5.5020009@cederstrand.dk> <20080208151756.GA35423@lor.one-eyed-alien.net> <foibab$a2g$1@ger.gmane.org> <9D27D745-2465-4FB2-B7E0-3C5DD411E9B9@mac.com> <foieub$mj6$1@ger.gmane.org> <967A7CF9-D9FE-454F-92E1-68D21CBDFA5E@mac.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig3936F310693C58B92DFA45C0" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 78-0-94-116.adsl.net.t-com.hr User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) In-Reply-To: <967A7CF9-D9FE-454F-92E1-68D21CBDFA5E@mac.com> X-Enigmail-Version: 0.95.6 Sender: news <news@ger.gmane.org> Subject: Re: Performance Tracker project update X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning <freebsd-performance.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>, <mailto:freebsd-performance-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-performance> List-Post: <mailto:freebsd-performance@freebsd.org> List-Help: <mailto:freebsd-performance-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>, <mailto:freebsd-performance-request@freebsd.org?subject=subscribe> X-List-Received-Date: Fri, 08 Feb 2008 22:38:33 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig3936F310693C58B92DFA45C0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Chuck Swiger wrote: > On Feb 8, 2008, at 12:43 PM, Ivan Voras wrote: >>> Historically, the Python optimizer wasn't capable of doing much,=20 >>> true, but the more recent versions of the optimizer can actually do=20 >>> some peephole optimizations like algorithmic simplification and=20 >>> constant folding: >>> http://docs.python.org/whatsnew/other-lang.html#SECTION00013200000000= 00000000=20 >>> >> >> A quick test with the built-in pystone mini-benchmark (taken out of=20 >> the standard library so the optimization can be varied) yields [*]: >> >> python without -O : 5802.36 >> python with -O : 5781.39 >=20 > That's ~ 0.4% difference, or low enough to be lost in the noise, agreed= =2E Ah sorry, fatal omission: that's loops per second, and it's consistent=20 across several runs of with and without -O. I.e. I'm getting _lower_=20 performance with -O :) --------------enig3936F310693C58B92DFA45C0 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHrNneldnAQVacBcgRAuIQAKDPeP3WnYpCnSbOl1XC6jqssBW9gwCgoohu AOsbWifo85uNFlEf7gRXz+A= =22ja -----END PGP SIGNATURE----- --------------enig3936F310693C58B92DFA45C0--