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Date:      Thu, 29 Jun 2000 09:28:30 -0700 (PDT)
From:      John Polstra <jdp@polstra.com>
To:        tpnelson@echidna.stu.cowan.edu.au
Cc:        alpha@freebsd.org
Subject:   Re: Cache line size for the Alpha
Message-ID:  <200006291628.JAA23243@vashon.polstra.com>
In-Reply-To: <395A0EE8.28E6C524@student.cowan.edu.au>
References:  <XFMail.000628213509.jdp@polstra.com> <395A0EE8.28E6C524@student.cowan.edu.au>

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In article <395A0EE8.28E6C524@student.cowan.edu.au>,
Trent Nelson  <tpnelson@echidna.stu.cowan.edu.au> wrote:

> 	21064, 21064A, 21066, 21066A, 21164 all have line sizes of 32-bytes.
> The 21264 has a 64-byte line size.

Thanks for the info!

Now does anybody know whether it makes a difference performance-wise
to put spinlocks in separate cache lines on the Alpha?  I understand
that it makes a big difference on the x86.  But one person told me in
private mail that he didn't think it mattered on the Alpha.

John
-- 
  John Polstra                                               jdp@polstra.com
  John D. Polstra & Co., Inc.                        Seattle, Washington USA
  "Disappointment is a good sign of basic intelligence."  -- Chögyam Trungpa



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