Messages in this thread | | | Date | Wed, 18 Sep 2002 20:30:52 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] zerocopy NFS for 2.5.36 |
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Aaron Lehmann wrote: > > > akpm:/usr/src/cptimer> ./cptimer -d -s > > nbytes=10240 from_align=0, to_align=0 > > copy_32: copied 19.1 Mbytes in 0.078 seconds at 243.9 Mbytes/sec > > __copy_duff: copied 19.1 Mbytes in 0.090 seconds at 211.1 Mbytes/sec > > It's disappointing that this program doesn't seem to support > benchmarking of MMX copy loops (like the ones in arch/i386/lib/mmx.c). > Those seem to be the more interesting memcpy functions on modern > systems.
Well the source is there, and the licensing terms are most reasonable.
But then, the source was there eighteen months ago and nothing happened. Sigh.
I think in-kernel MMX has fatal drawbacks anyway. Not sure what they are - I prefer to pretend that x86 CPUs execute raw C. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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