Three interesting patches: On 27th of March, Robert Haas committed patch: New GUC, track_iotiming, to track I/O timings. Currently, the only way to see the numbers this gathers is via EXPLAIN (ANALYZE, BUFFERS), but the plan is to add visibility through the stats collector and ...

On 4th of January, Tom Lane committed patch by Takahiro Itagaki, which adds new contrib module - pg_stat_statements: Log Message: ----------- Add contrib/pg_stat_statements for server-wide tracking of statement execution statistics. Takahiro Itagaki