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Date:      Mon, 16 Oct 2006 23:25:23 +0200
From:      Ivan Voras <ivoras@fer.hr>
To:        Kian Mohageri <kian.mohageri@gmail.com>
Cc:        freebsd-smp@freebsd.org
Subject:   Re: xeon 2.8GHz SMP/NOT test results
Message-ID:  <4533F8C3.90301@fer.hr>
In-Reply-To: <fee88ee40610161359t537c2768tacd5d8192befe688@mail.gmail.com>
References:  <fee88ee40610151610g4af70cbfi1b79ed256cc78995@mail.gmail.com>	<f ee88ee40610161115y5df70233te4f403c55331962c@mail.gmail.com>	<4533EE53.90106 03@fer.hr> <fee88ee40610161359t537c2768tacd5d8192befe688@mail.gmail.com>

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Kian Mohageri wrote:

>    I noticed somebody suggested trying SMP with hyperthreading disabled
>    in the BIOS, and I'm a little bit confused as to what sort of results
>    should I expect from that.

To see how much overhead does the SMP support in kernel bring, as
compared to the UP kernel. There's a relatively big difference in how
internal scheduling and synchronization works in these two cases.

The purpose of the benchmark is to show if, in the long term, the SMP
kernel could be made the default one.




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