From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] Re: strange performance behaviour with floats
Date: Mon, 24 Feb 2003 01:50:41 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590709805911@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590709805910@msgid-missing>
>>>>> On Mon, 24 Feb 2003 12:45:10 +1100, Keith Owens <kaos@sgi.com> said:
Keith> generated a two bundle loop as you suggested, but BogoMIPS went down,
Keith> not up.
Note: 2 bundle != 2 cycle, but even ignoring that: what did you
expect? BogoMIPS counts 2 instructions per loop iteration no matter
how many instructions are being executed. Perhaps you can get the
compiler to unroll the loop. Then you'd see a higher BogoMIPS.
--david
next prev parent reply other threads:[~2003-02-24 1:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-24 1:45 [Linux-ia64] Re: strange performance behaviour with floats Keith Owens
2003-02-24 1:50 ` David Mosberger [this message]
2003-02-24 2:01 ` Keith Owens
2003-02-24 2:16 ` David Mosberger
2003-02-24 2:25 ` Keith Owens
2003-02-24 19:12 ` David Mosberger
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