Pavel Stehule wrote: > 2014-08-13 15:22 GMT+02:00 MauMau <maumau...@gmail.com>:
> > I didn't mean performance statistics data to be stored in database tables. > > I just meant: > > > > * pg_stat_system_events is a view to show data on memory, which returns > > one row for each event across the system. This is similar to > > V$SYSTEM_EVENT in Oracle. > > > > * pg_stat_session_events is a view to show data on memory, which returns > > one row for each event on one session. This is similar to V$SESSION_EVENT > > in Oracle. > > > > * The above views represent the current accumulated data like other > > pg_stat_xxx views. > > > > * EXPLAIN ANALYZE and auto_explain shows all events for one query. The > > lock waits you are trying to record in the server log is one of the events. > > I am little bit sceptic about only memory based structure. Is it this > concept acceptable for commiters? Is this supposed to be session-local data, or is it visible from remote sessions too? How durable is it supposed to be? Keep in mind that in case of a crash, all pgstats data is erased. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
