David Suhendrik wrote: > @Rajagopal: > > This result: > # hdparm -tT /dev/hda5 > > /dev/hda5: > Timing cached reads: 9952 MB in 2.00 seconds = 4980.51 MB/sec > Timing buffered disk reads: 8 MB in 3.08 seconds = 2.60 MB/sec > 8MB/sec sounds like Programmed IO (PIO) to me. its probably 100% CPU busy too.