I can't recreate this, so it may not be much help, but I left PgAdmin
running with no query windows open at all, and eventually I noticed my
PC slowing right down as memory started to swap. I've attached a
screenshot to show its memory usage.
Actions I had performed earlier are attempting to select all rows from
a massive table, and closed that result window a few seconds into it
attempting to fetch results. I had issued a few queries in other
query windows which were quite minor ones which got counts. I doubled
the tablespace's random page cost for one of the connected clusters,
and updated the statistics target for a column on a table, then
performed a VACUUM ANALYZE. And I also attempted to restore a ~20GB
custom format database into a new database, but killed the process
some minutes into it as the cancel button on the restore window wasn't
responding. The window then showed a status of restore failed. I
then deleted that database.
After all this, no more query windows, result windows, or any other
PgAdmin-related windows were open except for the main application. It
was presumably idle as I had no other running processes, and was left
focused on a cluster node.
--
Thom Brown
Twitter: @darkixion
IRC (freenode): dark_ixion
Registered Linux user: #516935
