Hi:

PG v4.8.3 on Linux

I'm using "selcet procpid,current_query from pg_stat_activity" to monitor 
activity during times when "top" is showing many PG procs with very high cpu 
usage numbers (all cores at or above 90%).  Some of these are procs that map to 
PG connections with current_query = <IDLE>.

What scenarios could explain a process identified as IDLE consuming lots of CPU?

More clues... In parallel with these was a user that was making a series of 
insert/delete/update commands that fire off triggers that generate more DML 
recursively.  Some of the idles are "<IDLE> in transaction".

Thanks for any help !

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