Michael Akinde <michael(dot)akinde(at)met(dot)no> writes:
> Some observations:
> - With small blobs, the memory usage doesn't blow up in this way. The
> problem seems to require "big" blobs (although 140kb isn't really that
> much).
Ah, that may be the root of the difference in our results --- I was
trying with small blobs. Will retest.
regards, tom lane