>> - For a few tens of seconds, the rate is significantly higher than
>> the average.
>> - For a minute or more, ddrescue appears completely frozen (presumably
>> the kernel is draining the output queue or something).
> Have you tried the option '-y, --synchronous' (for a test)? It surely makes
> the copy slower, but it should keep a more constant rate:
The precision of the estimated remaining time is less important than the
real time it takes, so no I haven't tried and wouldn't use it (tho I'll
probably test it next time, out of curiosity).
Stefan
