Use a WaitLatch for vacuum/autovacuum sleeping
Instead of using pg_usleep() in vacuum_delay_point(), use a WaitLatch.
This has the advantage that we will realize if the postmaster has been
killed since the last time we decided to sleep while vacuuming.
Discussion:
@@ -2080,9 +2080,11 @@ vacuum_delay_point(void)
if (msec > VacuumCostDelay * 4)
msec = VacuumCostDelay * 4;
- pgstat_report_wait_start(WAIT_EVENT_VACUUM_DELAY);
- pg_usleep((long) (msec * 1000));
- pgstat_report_wait_end();
+ (void) WaitLatch(MyLatch,
+ WL_LATCH_SET | WL_TIMEOUT | WL_EXIT_ON_PM_DEATH,
+ msec,
+ WAIT_EVENT_VACUUM_DELAY);
+ ResetLatch(MyLatch);
VacuumCostBalance = 0;
