Does anyone have a benchmark of chunk sizes with SW RAID5?

[Justin Piszcz]

I am running one with 64,128,256,512,1024,2048,4096,8192,16384,32768,65536 
it it accepts up that high..  With XFS and _ALL_ default mount and 
filesystem settings to target this specific tunable.

p34:~# /usr/bin/time ./benchraid.sh
Tue Jun 26 10:25:21 EDT 2007: Creating RAID5 array with 64 chunk size...
Tue Jun 26 10:25:21 EDT 2007: Increasing RAID rebuild speed...
Tue Jun 26 10:25:21 EDT 2007: RAID is still building...
Tue Jun 26 10:35:21 EDT 2007: RAID is still building...

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