On Wed Feb 2 11, Ulrich Spörlein wrote:
> On Wed, 02.02.2011 at 12:04:58 -0800, Xin LI wrote:
> > On 02/02/11 11:54, Alexander Best wrote:
> > > so far dd(1) with a bs=2048 finished after:
> > >
> > > 4676648960 bytes transferred in 1639.108763 secs (2853166 bytes/sec)
> >
> > Just curious - how will recoverdisk(1) perform? I haven't tried it
> > myself but it uses much larger window which could be faster.
>
> +1 for recoverdisk. I hacked it so that it will also cope with media
> that has weird sectorsizes like 2352 bytes. It is awesome for reading
> optical media now, thanks to retries, large read requests and the
> ability to save progress (so you can try the failing sectors in another
> drive).
thanks a lot for all your replies. :)
here are some statistics i gathered:
LINUX:
-----
6,8 MB/s @ bs=2048
6,7 MB/s @ ibs=1M
obs=64M
6,6 MB/s @ bs=32K
FreeBSD:
-------
2,8 MB/s @ bs=2048
9,5 MB/s with recoverdisk /wo failures
9,5 MB/s @ ibs=1m
obs=64m
9,5 MB/s @ ibs=32k
obs=64m
indeed recoverdisk seems to be ideal for my case. i'll try to use it more
often. ;)
thanks again.
cheers.
alex
ps: seems linux is completely ignoring blocksizes, but that's their problem. ;)
>
> Regards,
> Uli
--
a13x
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