> This paragraph reads a bit strange to me: > > + A statistics session is the time period when statistics are gathered by > statistics collector > + without being reset. So a statistics session continues across normal > shutdowns, > + but whenever statistics are reset, like during a crash or upgrade, a new > time period > + of statistics collection commences i.e. a new statistics session. > + The query_id value generation is linked to statistics session to > emphasize the fact > + that whenever statistics are reset,the query_id for the same queries will > also change. > > "time period when"? Shouldn't that be "time period during which". > Also, doesn't a new "statistics session" start when a stats reset is > invoked by the user? The bit after "commences" appears correct (to me, > not a native by any means) but seems also a bit strange. > I have tried to rephrase this. Hopefully less confusing
A statistics session refers to the time period when statement statistics are gathered by statistics collector. A statistics session persists across normal shutdowns. Whenever statistics are reset like during a crash or upgrade, a new statistics session starts. The query_id value generation is linked to statistics session to emphasize that whenever statistics are reset,the query_id for the same queries will also change. regards Sameer -- View this message in context: http://postgresql.1045698.n5.nabble.com/pg-stat-statements-calls-under-estimation-propagation-tp5738128p5774365.html Sent from the PostgreSQL - hackers mailing list archive at Nabble.com.
