Re: speed of dd

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On Mon, Mar 15, 2021 at 12:45 AM Samuel Sieb <samuel@xxxxxxxx> wrote:
>
> On 3/14/21 4:05 AM, Ed Greshko wrote:
> > Changing to bs=65536 I get overall 93.5 MB/s on a 2.1 GB iso transfer.
>
> Just a suggestion that using bs=64K might be easier to remember and
> type, although I usually use at least bs=1M.

A hack that works sometimes

$ renice -n -18 -p $(pgrep usb-storage)
$ renice -n -18 -p $(pgrep dd)
$ ionice -c 2 -n 2 -p $(pgrep usb-storage)
$ ionice -c 2 -n 2 -p $(pgrep dd)

---
Lee
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