18 Jul
2016
18 Jul
'16
1:24 a.m.
Toby Corkindale via luv-main writes:
if you dd using large blocks does that improve things? eg. dd if=/dev/zero of=<whatever> bs=8M oflag=direct
When I was first testing it, I noticed that with block sizes around, say, 10M, it went at ~8mbyte/sec. With 100+M blocks, I could hit 24 or so.
That's why I suggested GNU ddrescue - it auto-adjusts the block size for best throughput. (... I think. These days I mostly just use cp foo.iso /dev/sdb.)