slow down dd - how?

Roland Smith rsmith at
Thu Jul 8 16:44:40 UTC 2010

On Thu, Jul 08, 2010 at 05:50:52PM +0200, Jozsi Avadkan wrote:
> How can I slow down dd?

Play with the block size parameter (bs). Smaller block sizes means more
reads. The default is 512 bytes, which is very small.
> I don't want to slow down the pc, when generating a big file [~40
> GByte].
> Does ionice work properly?

I think ionice only works on Linux.

Why not use nice(1)?

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