On Tue, 2004-06-15 at 21:04, Tom Lane wrote: > Andrew Dunstan <[EMAIL PROTECTED]> writes: > > Just to confirm that Simon is not suffering this uniquely, I saw this > > the other day on Windows, I believe - meant to report it but it got away > > from me. > > Oh, I bet I know what's going on --- are you guys launching the > postmaster in a console window and then typing ^C to shut it down? > Depending on your shell that might result in SIGINT being delivered > not only to the postmaster but to all its children. Backends, if > any, will take that as a query-cancel while the bgwriter will take > it as a checkpoint request. Which could easily result in the > too-frequent-checkpoints message. > > The only real fix I can see for this is to use some other signal than > SIGINT to transmit checkpoint requests to the bgwriter. Maybe we could > piggyback all bgwriter requests onto SIGUSR2, comparable to the way that > signals up to the postmaster are now handled. Not sure how important > it is though. >
Sounds like the cause to me...that would explain why it has just started happening... Its minor then... I would only do that for testing... Regards, Simon ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match