Re: dd(1) performance when copiing a disk to another

2005-10-03 Thread Bruce Evans
On Mon, 3 Oct 2005, [ISO-8859-1] Tulio Guimar?es da Silva wrote: But just to clear out some questions... 1) Maxtor?s full specifications for Diamond Max+ 9 Series refers to maximum *sustained* transfer rates of 37MB/s and 67MB/s for "ID" and "OD", respectively (though I couldn?d find exactly w

Re: dd(1) performance when copying a disk to another

2005-10-03 Thread Tulio Guimarães da Silva
Phew, thanks for that. :) This seems to answer my question in the other "leg" of the thread, though it hadn´t yet arrived to me when I wrote the message, though. Now THAT´s a quite good explanation. ;) Thanks again, Tulio G. da Silva Bruce Evans wrote: On Mon, 3 Oct 2005, Patrick Proniewsk

Re: dd(1) performance when copiing a disk to another

2005-10-03 Thread Tulio Guimarães da Silva
Steven Hartland wrote: - Original Message - From: "Arne Wörner" <[EMAIL PROTECTED]> That seems to be 2 or about 2 times faster than disc->disc transfer... But still slower, than I would have expected... SATA150 sounds like the drive can do 150MB/sec... LOL, you might want to read up

Re: dd(1) performance when copiing a disk to another

2005-10-03 Thread Bruce Evans
On Mon, 3 Oct 2005, Patrick Proniewski wrote: # dd if=/dev/ad4 of=/dev/null bs=1m count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 17.647464 secs (59417943 bytes/sec) Many wrong answers to the original question have been given. dd with a blocks size of 1m betwee

Re: dd(1) performance when copiing a disk to another

2005-10-03 Thread Patrick Proniewski
Hi Arne and Eric, # atacontrol mode 0 Master = BIOSPIO Slave = BIOSPIO Hmm... 0 seems to be the wrong ata... Thats why the output does not fit to SATA drives, I think... oups... I'll have to do it again with channels 2 and 3 # dd if=/dev/ad4 of=/dev/null bs=1m count=1000 1000+0 records