2010/6/15 Allan Kamau <kamauallan@xxxxxxxxx>
I do have a PL/SQL function that gets executed called many times but
with different parameter values each of these times. For most
invocations of this function run in a couple of seconds however some
invocations of the same function run (on the same dataset) for hours
with very little disk activity but high CPU.
How can I monitor the actual DB activities during such times so I may
better understand what the situation truly is.
You can monitor system parameters (CPU, disk IO, memory) with standard OS-specific tools (on Unix: top, ps iostat,vmstat)
I have seen some users
on this list posting some complex log/outputs, this are the kind of
outputs I would like to capture and view. Where are they?
they are mostly in log files or output from EXPLAIN ANALYZE command
for general info see
http://www.postgresql.org/docs/current/static/runtime-config-logging.html
http://www.postgresql.org/docs/8.4/static/using-explain.html
http://wiki.postgresql.org/wiki/Performance_Optimization
and this list archives.
Filip
