Jan's vacuum-delay-only patch that nobody can find is here:
http://archives.postgresql.org/pgsql-hackers/2003-11/msg00518.php
I've been using it in testing & production without any problems.
Great to know -- many thanks.
I've hacked my own vacuum-delay-only patch form Jan's all_performance patch. It looks like the only difference is that it uses usleep() instead of select(). So far the tests look promising.
Thanks,
Joe
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