On Tuesday, July 01, 2014 04:21:45 AM Dale wrote: > J. Roeleveld wrote: > >>> root@fireball / # hdparm -tT /dev/sdb > >>> > >>> /dev/sdb: > >>> Timing cached reads: 6604 MB in 2.00 seconds = 3303.39 MB/sec > >>> Timing buffered disk reads: 542 MB in 3.01 seconds = 180.33 MB/sec > >>> > >>> root@fireball / # > >> > >> Try a real life example like dd. I have seen the above mentioned speed > >> on disks with a file system on it which does limit the speed anyway. > > > > +1 > > > > -- > > Joost > > I watched the dd process when I was erasing the old drive. I got about > the same results. It started out a little over 200 and went as low as > 170 or so close to the end. On average, about what hdparm shows. Close > enough it seems. ;-)
Yep, but do the same after adding a filesystem to the mix? Eg. mount it somewhere, then dd to a file on that drive. -- Joost
