Am Sonntag, 13. Mai 2012, 13:28:45 schrieb walt: > I have a usb3 docking station which is showing some behavior I don't > understand: > > #hdparm -t /dev/sdc > > /dev/sdc: > Timing buffered disk reads: 266 MB in 3.00 seconds = 88.59 MB/sec > Timing buffered disk reads: 268 MB in 3.01 seconds = 89.05 MB/sec > Timing buffered disk reads: 266 MB in 3.01 seconds = 88.43 MB/sec > Timing buffered disk reads: 266 MB in 3.02 seconds = 88.10 MB/sec > Timing buffered disk reads: 306 MB in 3.01 seconds = 101.72 MB/sec > Timing buffered disk reads: 266 MB in 3.00 seconds = 88.59 MB/sec > Timing buffered disk reads: 306 MB in 3.00 seconds = 101.84 MB/sec > Timing buffered disk reads: 306 MB in 3.00 seconds = 101.86 MB/sec > > That's all the same disk, repeating hdparm as fast as I could. The > disk was not even mounted at the time, and no other disks were active. > > Two very different but reproducible numbers, changing values at random > times. The only thing I can think of is that the disk may be doing > a SMART self-test, but for some reason the USB connection prevents > me from accessing the data so I can't test my theory. > > Any other ideas?
it is usb... don't loose any sweat about it. The numbers are fine and variation is to be expected. -- #163933
