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RE: [PING] Re: String Functions for x86-64
- From: "Menezes, Evandro" <evandro dot menezes at amd dot com>
- To: "H. J. Lu" <hjl at lucon dot org>, "Rene Rebe" <rene at exactcode dot de>
- Cc: libc-alpha at sourceware dot org, "Ulrich Drepper" <drepper at redhat dot com>, "Meissner, Michael" <michael dot meissner at amd dot com>
- Date: Fri, 28 Jul 2006 14:37:47 -0500
- Subject: RE: [PING] Re: String Functions for x86-64
Hi, HJ.
> We took a closer look at the new memcpy. We found that the new memcpy
> was faster than the old one for sizes 1-1024 bytes, but much slower
> than the old one for sizes > 1024 bytes. We are still investigating.
Did you observe differences slow downs in the order of 0.5% in some cases as in http://sources.redhat.com/ml/libc-alpha/2006-05/txt00001.txt too?
How about the other routines submitted, what did you find out about them?
Thanks,
--
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Evandro Menezes AMD Austin, TX