[Nottingham] Very slow dd if=/dev/random

From: Martin (martin@ml1.co.uk)
Date: Tue 29 Jul 2003 - 09:28:55 BST


I've just wiped a partially corrupt hdd superblock and all's well.

Meanwhile, I tried:
dd if=/dev/random of=/dev/hdg bs=1M

just for the sake of experimenting and...

it works, but incredibly slowly with one disk access every few minutes!
dd spends most of its time sleeping.

So why doesn't this work at 10's MBytes a second?

Curious,
Martin

-- 
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Martin Lomas
martin@ml1.co.uk
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