RE: syscall improvement patch [0/12]

From: Luck, Tony <tony.luck_at_intel.com>
Date: 2005-03-25 09:07:42
>That's very strange.  The branch-prediction may or may not help,
>depending on your test program.  The srlz.d elimination definitely
>should help, though.  What test-program are you using?  Also, are you
>using McKinley or Madison?

Madison ... but it might be an oddball stepping (it is very old).  I have
a home-grown test that reads ar.itc before/after the getpid() and saves the
difference in an array.  The program repeats 1000 times, then prints the min,
max and median number of cycles.

-Tony
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Received on Thu Mar 24 17:07:59 2005

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