I wonder if we can continue to rely on the pg_sleep() loop for sleeping
in walsender. On those platforms where interrupts don't interrupt sleep,
sending the signal is not going to promptly wake up walsender. That was
fine before, but any delay is going to be poison to synchronous
replication performance.
Thoughts?
-- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com