"Steven Flatt" <> writes:
> The vacuum then just sat there. What I can't understand is why it went back
> for a second pass of the pkey index? There was nothing writing to the table
> once the vacuum began. Is this behaviour expected?
Yes (hint: the numbers tell me what your maintenance_work_mem setting is).
You should have left it alone, probably, though there seems to be
something funny about your foo_1 index --- why was that so much slower
than the others for the first pass?
regards, tom lane