The following bug has been logged online:
Bug reference: 1588
Logged by: Lionel Bouton
Email address: lionel-subscription@bouton.name
PostgreSQL version: 8.0.1
Operating system: Linux 2.6, glibc 2.3.4
Description: pg_autovacuum sleep parameter overflow
Details:
pg_autovacuum doesn't sleep when the -s parameter is set above 2147
(PostgreSQL then is under constant stress), seems like a 32-bit signed
integer overflow (the time in µs then gets past 2^31-1) somewhere.
This worked with 7.4.6 (at least with -s 3600).