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Re: optimised memcpy

Subject: Re: optimised memcpy
From: Garth Cummings <email@hidden>
Date: Wed, 23 May 2007 11:10:29 -0700
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Hi Brett,

On May 23, 2007, at 11:07 AM, Brett George wrote:

I am using memcpy on an x86 machine and finding it to be quite slow compared to other optimised routines.

I am moving 16384 words of 32-bit floating point data and it's taking around 49us.

Your mention of floating point leads me to verify whether you're talking about the memcpy in the kernel or the one in userland?

Thanks,

--gc

____________________________________________________________________

Garth Cummings email@hidden

Sr. Software Engineer

Apple Developer Technical Support

<http://developer.apple.com/technicalsupport>

WWDC 2007 • June 11-15 • Moscone West • San Francisco, CA

<http://developer.apple.com/wwdc/>

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