Date: Tue, 28 Jun 2005 18:51:58 +0200 From: Roman Neuhauser <neuhauser@sigpipe.cz> To: Michael Schuh <michael.schuh@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD MySQL still WAY slower than Linux Message-ID: <20050628165158.GB51923@isis.sigpipe.cz> In-Reply-To: <1dbad31505062809292af0d294@mail.gmail.com> References: <1dbad315050621051525f4c6fc@mail.gmail.com> <200506211451.j5LEpA2W024350@lurza.secnetix.de> <20050628092126.GB48140@isis.sigpipe.cz> <1119973124.7900.20.camel@zappa.Chelsea-Ct.Org> <1dbad31505062809292af0d294@mail.gmail.com>
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# michael.schuh@gmail.com / 2005-06-28 18:29:59 +0200:
> 2005/6/28, Paul Mather <paul@gromit.dlib.vt.edu>:
> > On Tue, 2005-06-28 at 11:21 +0200, Roman Neuhauser wrote:
> > > # olli@lurza.secnetix.de / 2005-06-21 16:51:10 +0200:
> > > > For accurate measurements and comparisons, you have to make
> > > > sure to use _exactly_ the same physical location on the
> > > > disk.
> > >
> > > No you don't. You want to make a side-by-side comparison
> > > of two products, and if one of them underperforms, it just
> > > underperforms. You cannot use a poor location selection
> > > strategy in the driver as an excuse for poor operation.
> >
> > The point people are making is that location can have a significant
> > effect on performance, and so should not be dismissed out of hand.
>
> Yes, i know that and i agree with them.
> that was the reason, why my disk is tiled on first physical Gigabyte for Swap,
> and the rest for the system....
>
> my target was to compare 2 Versions not 2 Os-Types like FreeBSD and Linux,
> but FreeBSD and FreeBSD, in cases RELENG_4 with RELENG_5.
>
> so that the little difference between the different places for files,
> remember i install everytime at the beginning of second Gig on disk,
> should be flawlessy and not make the results so big, that the RELENG_4
> has the double of speed from RELENG_5!
I can feel your pain.
--
How many Vietnam vets does it take to screw in a light bulb?
You don't know, man. You don't KNOW.
Cause you weren't THERE. http://bash.org/?255991
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