Re: DD command

[Sven Joachim <svenjoac@gmx.de>]

On 2008-12-19 16:53 +0100, rjubio wrote:

> Sven Joachim wrote:
>> On 2008-12-19 07:36 +0100, rjubio wrote:
>>
>>   
>>> How long does a dd command take for an 80 GB IDE hd?
>>>     
>>
>> Not long ago I zeroed out the disk of my old machine because I wanted to
>> sell it, and that took 80 GB /(53 MiB/s) = 25 minutes.
>>
>> Sven
>>
>>
>>   
> I dont get it. I've been getting 3.3 MiB/s on my machine. And this has
> some pretty good specs because we will use this as a production
> machine.

Probably that's because you're using a too small block size then.  Try
with something like 10M, the dd default of just 512 bytes seems to slow
things down, since it writes each sector separately.

Sven