Messages in this thread |  | | Date | Thu, 8 Feb 2001 18:37:53 +0100 (CET) | From | (Arjan van de Ven) | Subject | Re: sse for fast_clear_page()? |
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In article <3A82D325.9068BC07@colorfullife.com> you wrote: > fast_clear_page() uses mmx instructions for clearing a page, what about > using sse instructions? > sse instructions can store 128 bit in one instruction, mmx only 64 bit.
the sse FP registers might be lossy. On my athlon, the in-kernel mmx functions are memory-bound (eg > 1 Gbyte/sec throughput)
Userspace program for the athlon code:
http://www.fenrus.demon.nl/athlon.c
Greetings, Arjan van de Ven
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