[CentOS] Question about dd (fill a hard disks' unused space with blanks)

John R Pierce pierce at hogranch.com
Sun Jun 7 19:29:11 UTC 2009

Niki Kovacs wrote:
> Rainer Duffner a écrit :
>> Yup.
>> If you have the time, you can experiment with the blocksize and see  
>> where the throughput is best.
>> http://unix.derkeiler.com/Mailing-Lists/FreeBSD/questions/2008-09/msg01375.html
> Interesting thread. Guess I'll give it a few spins with different 
> blocksizes (20k, 200k, 2M, 20M) and time { } the operation. Just curious.

in the past, I've found anything much over 32k is pointless. 

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