What does that mean? UDMA66 and hw.ata.ata_dma=0 ?
Hmmm, that is interesting, 2 suggestion to determine what is going on: - run diskinfo -t on your disks and let us know the results - use sysctl to set hw.ata.ata_dma=1 and see what happens
And why then is UDMA66 not automatically choosen at bootup?
At a guess I would suggest that dma is broken for your motherboards in 5.3 (what were they again?).
regards
Mark
P.s : My diskinfo results FYI:
zmori# diskinfo -t /dev/ad1s1a /dev/ad1s1a 512 # sectorsize 18946621952 # mediasize in bytes (18G) 37005121 # mediasize in sectors 36711 # Cylinders according to firmware. 16 # Heads according to firmware. 63 # Sectors according to firmware.
Seek times:
Full stroke: 250 iter in 5.024736 sec = 20.099 msec
Half stroke: 250 iter in 3.989959 sec = 15.960 msec
Quarter stroke: 500 iter in 6.864865 sec = 13.730 msec
Short forward: 400 iter in 3.010462 sec = 7.526 msec
Short backward: 400 iter in 1.247889 sec = 3.120 msec
Seq outer: 2048 iter in 0.490103 sec = 0.239 msec
Seq inner: 2048 iter in 0.457750 sec = 0.224 msec
Transfer rates:
outside: 102400 kbytes in 2.418307 sec = 42344 kbytes/sec
middle: 102400 kbytes in 2.571397 sec = 39823 kbytes/sec
inside: 102400 kbytes in 4.105673 sec = 24941 kbytes/sec
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