On 3/2/06, Alex Zbyslaw <[EMAIL PROTECTED]> wrote: > [snipped] > > Why not happy? Transfer rates from 53 to 92Mb/s, give or take; what's > wrong with that? On a plain sata disk I get: > > Seek times: > Full stroke: 250 iter in 4.717248 sec = 18.869 msec > Half stroke: 250 iter in 5.342099 sec = 21.368 msec > Quarter stroke: 500 iter in 8.870424 sec = 17.741 msec > Short forward: 400 iter in 2.753187 sec = 6.883 msec > Short backward: 400 iter in 1.390941 sec = 3.477 msec > Seq outer: 2048 iter in 0.426796 sec = 0.208 msec > Seq inner: 2048 iter in 0.487280 sec = 0.238 msec > Transfer rates: > outside: 102400 kbytes in 1.652736 sec = 61958 kbytes/sec > middle: 102400 kbytes in 1.697364 sec = 60329 kbytes/sec > inside: 102400 kbytes in 1.834759 sec = 55811 kbytes/sec > > A second, different, disk gives me better seek times but roughly similar > transfer rates. So I beat your inside transfer rate, but you're 50% up > on the outside rate. > > If you have windows anywhere, then download sandra-lite. Among other > things, it has comparison benchmarks for all its tests, including disk > transfer rates for things like SCSI-RAID0, RAID1, SATA/PATA-RAID0/1 etc. >
diskinfo -t /dev/da0e /dev/da0 512 # sectorsize 1756440297472 # mediasize in bytes (1.6T) 3430547456 # mediasize in sectors 213541 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 3.502539 sec = 14.010 msec Half stroke: 250 iter in 2.749807 sec = 10.999 msec Quarter stroke: 500 iter in 4.919431 sec = 9.839 msec Short forward: 400 iter in 2.257898 sec = 5.645 msec Short backward: 400 iter in 2.293915 sec = 5.735 msec Seq outer: 2048 iter in 0.132233 sec = 0.065 msec Seq inner: 2048 iter in 0.152473 sec = 0.074 msec Transfer rates: outside: 102400 kbytes in 1.487112 sec = 68858 kbytes/sec middle: 102400 kbytes in 1.505039 sec = 68038 kbytes/sec inside: 102400 kbytes in 1.336495 sec = 76618 kbytes/sec This and all the other benchmarks you've run are useless. Run a real benchmark like iozone. It's in ports under benchmarks/iozone. http://www.iozone.org/ -- BSD Podcasts @ http://bsdtalk.blogspot.com/ _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"