Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: A question about MMX. | Date | Sat, 21 Apr 2001 12:59:07 +0100 (BST) | From | Alan Cox <> |
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> I have a Intel Pentium MMX machine and it acts as a mailserver, webserver, > ftp and I use X on it. I would like to know if the MMX instructions are > used by the kernel in this operations or not (networking, X etc.).
In almost all cases - no. The MMX instructions are mostly not useful. A few graphics operations benefit from them such as mpeg players but that is about it.
On the AMD and Cyrix machines 3Dnow is used extensively by Mesa (3D) and by many of the mp3 players. The winchip and athlon kernels also use mmx for block copies but this isnt a win in the pentium case.
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