david e0250c1b66 Change the conditions for printing a timing status update to what I think they ...

were intended to be. We are okay to print if
  1. We don't have a completion time estimate yet; or
  2. We have passed the last completion time estimate; or
  3. The estimated time remaining differs from the last one printed by more
     than 3 minutes, and the difference accounts for more than 5% of the
     estimated total time.
The problem was that the last printed time remaining was calculated not as
difftime(last_est.tv_sec, last_print.tv_sec), but as
difftime(last_est.tv_sec, now->tv_sec). In other words it was constantly
changing, and at the same rate as the estimated time left (if the scan was
progressing at a constant rate). That means that as soon as a completion time
estimate was fairly accurate, you would not get any more estimates because the
difference in the two times would always be small.

2009-02-11 18:56:46 +00:00

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