[Bucardo-general] Swap replication latency

[Alex Balashov]

I've had to shut down our replication indefinitely because the 
bucardo_delta table got to 13.3 million rows, and none of them were 
being cleared out even with a purge interval of 5 minutes.  I assume 
that's because these were unprocessed deltas.

The "run time" of the last good sync ballooned out to 45 hours.  This 
is for a database of about ~1 GB with only 650,000 inserts, 3,510 
updates and 81 deletes.

-- 
Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
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