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Date:      Wed, 22 Sep 2010 17:35:53 +0300
From:      nickolasbug@gmail.com
To:        Tom Evans <tevans.uk@googlemail.com>
Cc:        Adam Vande More <amvandemore@gmail.com>, Peter Jeremy <peterjeremy@acm.org>, Bryce <bryce@bryce.net>, Ian Smith <smithi@nimnet.asn.au>, freebsd-stable@freebsd.org
Subject:   Re: SuperMicro i7 (UP) - very slow performance
Message-ID:  <AANLkTikzgiFSYfnLLa13ndTdNov6=7SX=EQbuH3ObZH0@mail.gmail.com>
In-Reply-To: <AANLkTik3bFuh9FR8vvwf=FfO2ojQYzHxWD8MODj22x1a@mail.gmail.com>
References:  <AANLkTin2XH8Gs0ytgHsuF50iUJ3JFQU_OO3xSRfq3-C8@mail.gmail.com> <mailpost.1284981513.7745206.53335.mailing.freebsd.stable@FreeBSD.cs.nctu.edu.tw> <10b0bdef-2bb1-44c8-9ffb-7d3167147a4f@q2g2000vbk.googlegroups.com> <20100922081230.GA20489@server.vk2pj.dyndns.org> <20100922230552.D11124@sola.nimnet.asn.au> <AANLkTik3bFuh9FR8vvwf=FfO2ojQYzHxWD8MODj22x1a@mail.gmail.com>

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> md5 -t is quite a small benchmark, even with his misfunctioning CPU it
> took <6 seconds to complete.
>
> If his problem is a misapplied heatsink/fan, then his CPU could be
> throttling when it gets hot, the hotter it gets the more it throttles,
> which could explain his massive buildworld walltime. Perhaps running
> something like:
>
> =A0apply -0 "md5 -t" `jot 10`
>
> would display a notable difference.


You may also run openssl speed or "linpack" test
(/usr/ports/math/linpack) or hpl (/usr/ports/benchmarks/hpl) to load
your CPU



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