On Fri, Dec 19, 2008 at 08:52:00 -0500, Douglas A. Tutty (dtu...@vianet.ca) wrote:
> On Fri, Dec 19, 2008 at 02:36:45PM +0800, rjubio wrote: > > How long does a dd command take for an 80 GB IDE hd? > > You could use hdparm testing to get the unbuffered speed and then do the > math. Thank you for mentioning this Douglas. Another thing learned today! On a very average PC (1.8 GHz Athlon) I am getting very repeatable results such as: # hdparm -t /dev/hda /dev/hda: Timing buffered disk reads: 186 MB in 3.03 seconds = 61.49 MB/sec ...and even on a painfully slow Linksys NSLU2 "slug" (which has its hard drive connected via a USB2 to IDE interface: # hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 32 MB in 3.09 seconds = 10.36 MB/sec I know from previous timing tests with the Slug that this figure looks about right. -- Bob Cox. Stoke Gifford, near Bristol, UK. Please reply to the list only. Do NOT send copies directly to me. Debian on the NSLU2: http://bobcox.com/slug/ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
