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Date:      Mon, 16 Oct 2006 13:01:29 +0200
From:      "Attilio Rao" <attilio@freebsd.org>
To:        kian.mohageri@gmail.com, "Ivan Voras" <ivoras@fer.hr>,  freebsd-smp@freebsd.org
Subject:   Re: xeon 2.8GHz SMP/NOT test results
Message-ID:  <3bbf2fe10610160401u72748b2fi919994fb18f422e5@mail.gmail.com>
In-Reply-To: <egvn2j$fmv$1@sea.gmane.org>
References:  <fee88ee40610151610g4af70cbfi1b79ed256cc78995@mail.gmail.com> <egvn2j$fmv$1@sea.gmane.org>

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2006/10/16, Ivan Voras <ivoras@fer.hr>:
> Kian Mohageri wrote:
>
> > I've never used sysbench (I essentially picked it randomly) so if you know
> > it to be a crappy benchmark tool for this sort of thing, do tell.  I'm also
> > pretty new at testing performance in general, but I hope someone finds it
> > useful anyway.
>
> Maybe you'll be interested in ports/benchmark/unixbench, especially the
> context switch and shell scripts benchmarks?
>
> > http://www.zampanosbits.com/smp_tests/
>
> Interesting results, especially for such an early version of the
> processor (wrt HTT) - I'd expect much lower gain from HTT. While you're
> at it, maybe you could add more results to your benchmark, like change
> the timecounter to TSC, use various gcc optimization flags, twiddle
> machdep.cpu_idle_hlt, use SMP kernel with HTT disabled in BIOS?

What about PREEMPTION/FULL_PREEMPTION?

Attilio


-- 
Peace can only be achieved by understanding - A. Einstein



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