Re: EXPLAIN ANALYSE patch
От | Bruce Momjian |
---|---|
Тема | Re: EXPLAIN ANALYSE patch |
Дата | |
Msg-id | 200109041501.f84F1eM08249@candle.pha.pa.us обсуждение исходный текст |
Ответ на | EXPLAIN ANALYSE patch (Martijn van Oosterhout <kleptog@svana.org>) |
Список | pgsql-patches |
Your patch has been added to the PostgreSQL unapplied patches list at: http://candle.pha.pa.us/cgi-bin/pgpatches I will try to apply it within the next 48 hours. > Here is the latest version of the EXPLAIN ANALYZE patch. I hope I correct > most of the issues that people had with the previous version. The impact > should be negligable when nothing is being measured. The precision is pretty > darn good considering its use of gettimeofday(). > > The effect is to create a new command EXPLAIN ANALYZE which actually > executes the query and then returns statistics on how the query ran. It > counts the number of rows, the time till the first tuple is returned, time > forall the tuples and the number of times the tuple was restarted. > > If the node is part of a subplan, the statistics will be the total of all > executions of that subplan. I do beleive this is the right way of doing it. > Group nodes look slightly strange but I beleive it's fine that way. > > Anyway, test away. If there is enough interest I can even write some docs. > It adds two files. > > http://svana.org/kleptog/pgsql/timing-explain.patch > -- > Martijn van Oosterhout <kleptog@svana.org> > http://svana.org/kleptog/ > > It would be nice if someone came up with a certification system that > > actually separated those who can barely regurgitate what they crammed over > > the last few weeks from those who command secret ninja networking powers. [ Attachment, skipping... ] > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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