Date: Fri, 15 Feb 2002 19:54:12 -0800 From: Rob <rob@pythonemproject.com> To: Terry Lambert <tlambert2@mindspring.com> Cc: Dag-Erling Smorgrav <des@ofug.org>, "freebsd-chat@FreeBSD.ORG" <freebsd-chat@FreeBSD.ORG> Subject: Re: Why is Python slower on FreeBSD than Windows? Message-ID: <3C6DD7E4.2F3DF868@pythonemproject.com> References: <3C6D22C2.268E6915@pythonemproject.com> <xzpheoilqr1.fsf@flood.ping.uio.no> <3C6DD1C7.4F3DEE06@mindspring.com>
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Terry Lambert wrote: > > Dag-Erling Smorgrav wrote: > > Rob <rob@pythonemproject.com> 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
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