I just released first version of change to explain.depesz.com that displays buffer I/O information, as described recently.
You can see it in here.
There are two new columns in there, showing how much data given node read from disk, and how much it wrote.
It's definitely not 100% OK now, as you can see, speed and time is not always there, but generally it should work.
There is also summarized info in stats page of the explain.
If you'd notice anything wrong, please let me know, either by mail, or just make an issue on GitLab.
On 27th of March, Andrew Dunstan committed patch:
Add stats for min, max, mean, stddev times to pg_stat_statements.
The new fields are min_time, max_time, mean_time and stddev_time.
Based on an original patch from Mitsumasa KONDO, modified by me. Reviewed by Petr Jelínek.
Continue reading Waiting for 9.5 – Add stats for min, max, mean, stddev times to pg_stat_statements.
On 7th of February, Robert Haas committed patch:
Sometimes it may be useful to get actual row counts out of EXPLAIN
(ANALYZE) without paying the cost of timing every node entry/exit.
With this patch, you can say EXPLAIN (ANALYZE, TIMING OFF) to get that.
Tomas Vondra, reviewed by Eric Theise, with minor doc changes by me.
Continue reading Waiting for 9.2 – EXPLAIN TIMING