From owner-freebsd-chat Fri Feb 15 19:57:29 2002 Delivered-To: freebsd-chat@freebsd.org Received: from mail19b.rapidsite.net (mail19b.rapidsite.net [161.58.134.134]) by hub.freebsd.org (Postfix) with SMTP id D822C37B41D for ; Fri, 15 Feb 2002 19:57:14 -0800 (PST) Received: from 198.104.176.109 (198.104.176.109) by mail19b.rapidsite.net (RS ver 1.0.60s) with SMTP id 0108148502; Fri, 15 Feb 2002 23:01:33 -0500 (EST) Message-ID: <3C6DD7E4.2F3DF868@pythonemproject.com> Date: Fri, 15 Feb 2002 19:54:12 -0800 From: Rob X-Mailer: Mozilla 4.76 [en] (X11; U; FreeBSD 4.5-STABLE i386) X-Accept-Language: en MIME-Version: 1.0 To: Terry Lambert Cc: Dag-Erling Smorgrav , "freebsd-chat@FreeBSD.ORG" Subject: Re: Why is Python slower on FreeBSD than Windows? References: <3C6D22C2.268E6915@pythonemproject.com> <3C6DD1C7.4F3DEE06@mindspring.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Loop-Detect: 1 Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Terry Lambert wrote: > > Dag-Erling Smorgrav wrote: > > Rob writes: > > > I've been doing some prototyping of some number crunching programs on > > > Python, and I found that Python is consistently slower on my laptop on > > > FreeBSD than when I boot into Windows. For example, one program takes > > > 800sec to run on FreeBSD and 300sec to run when I boot into Win2k. I am > > > wondering if I should try setting -03 in make.conf and remake Python and > > > Numpy. Right now I have just -O. > > > > My bet: crappy compiler. And building with -O3 will probably result > > in incorrect code, BTW. > > Check the clock rate that FreeBSD displays. In some > power saving modes, which are normally only reset by > interaction with Windows ACPI after the boot is complete, > so are not reset by FreeBSD, the CPU clock rate is > reduced to reduce power consumption. It could be that > FreeBSD is, in fact, running the processor at a lower > clock rate than Windows. > > -- Terry Thanks, Terry. A very good point. I will check it out. Rob -- The Numeric Python EM Project www.pythonemproject.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message