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Date:      Tue, 23 Oct 2007 16:16:54 -0400
From:      "Josh Carroll" <josh.carroll@gmail.com>
To:        "Josh Paetzel" <josh@tcbug.org>
Cc:        Kip Macy <kip.macy@gmail.com>, freebsd-performance@freebsd.org
Subject:   Re: ULE vs. 4BSD in RELENG_7
Message-ID:  <8cb6106e0710231316w48c2ce59w5df70103771642a1@mail.gmail.com>
In-Reply-To: <200710231509.03771.josh@tcbug.org>
References:  <8cb6106e0710230902x4edf2c8eu2d912d5de1f5d4a2@mail.gmail.com> <b1fa29170710231047i50859fa7gde2904985a7a8c20@mail.gmail.com> <8cb6106e0710231257k154e9c6ev4b4ba8c3692206fb@mail.gmail.com> <200710231509.03771.josh@tcbug.org>

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> Just curious, but are these results obtained while you are
> overclocking your 2.4ghz CPU to  3.4ghz?  That might be a useful
> datapoint.

Yes they are with the CPU overclocked. I have verified the results
when not overclocked as well (running at stock).

> It also might be useful to know what sort of disks you are using.
> SATA is notoriously bad at parallel access, and compiling is of
> course horribly disk bound to begin with.

I'm sure disk I/O is a factor here. ULE is supposed to provide better
interactiveness during high load (and I/O load), right? Perhaps the
scheduler is being too liberal with time slices for I/O?

Josh



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