I'm running a Dual Celeron setup (300A's on BP6 oc'd to 477). I noticed
during boot the following:
Nov 3 20:28:49 anthrax kernel: raid5: measuring checksumming speed
Nov 3 20:28:49 anthrax kernel: raid5: MMX detected, trying high-speed MMX checksum
routines
Nov 3 20:28:49 anthrax kernel: pII_mmx : 1069.467 MB/sec
Nov 3 20:28:49 anthrax kernel: p5_mmx : 1115.949 MB/sec
Nov 3 20:28:49 anthrax kernel: 8regs : 819.531 MB/sec
Nov 3 20:28:49 anthrax kernel: 32regs : 481.965 MB/sec
Nov 3 20:28:49 anthrax kernel: using fastest function: p5_mmx (1115.949 MB/sec)
I see that the p5_mmx instructions are actually faster than the pII_mmx
instructions. I've also read that this condition is present in the P-III
CPUs. Would the P-III patches help in this case? I doubt it, but I
suppose anything's possible.
The above came from the stock 2.2.12-20smp kernel. I'm currently running
2.2.13 without the RAID patches (they didn't seem to get along w/ the
new IDE patches that add support for the HPT366 onboard the BP6). Would the
P-III patches and compiling w/P-III optimization add performance, or would
that just be a waste of cycles?
--
Jason Costomiris <><
Technologist, cryptogeek, human.
jcostom {at} jasons {dot} org | http://www.jasons.org/
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