[Bug-ddrescue] interpreting ddrescue messages

[Allan Hughes]

I am currently trying to rescue a faulty 250GB external USB drive. I am 
on a Macbook Pro i7 and have compiled ddrescue 1.14 in Terminal. I am a 
first timer at this so am not sure how to interpret the readings I am 
getting as block splitting is underway. Also the whole process has 
dragged my laptop to a near standstill as Terminal, ddrescue and 
associated root processes are hogging CPU and RAM.
The dmg file I am writing is currently sat at 2.81GB so obviously still 
some way to go but am hard pressed to tell if this si working.
These are the last three messages before I ctrl-C'd it.

Broadcast Message from address@hidden
        (no tty) at 13:52 BST...
rescued:     2751 MB,  errsize:   1099 GB,  current rate:        0 B/s
   ipos:   250038 MB,   errors:     940,    average rate:      34 kB/s
   opos:   250038 MB,     time from last successful read:     1.5 h

Broadcast Message from address@hidden
        (no tty) at 13:52 BST...
rescued:     2751 MB,  errsize:   1099 GB,  current rate:        0 B/s
   ipos:       16 GB,   errors:     940,    average rate:    33674 B/s
   opos:       16 GB,     time from last successful read:     1.6 h

Broadcast Message from address@hidden
        (no tty) at 13:54 BST...
rescued:     2751 MB,  errsize:   1099 GB,  current rate:        0 B/s
   ipos:    17333 MB,   errors:     940,    average rate:    33629 B/s
   opos:    17333 MB,     time from last successful read:     1.6 h