Re: sudden spurt in swap utilization (was:cpu bound postgresql setup.) - Mailing list pgsql-performance

From Kevin Grittner
Subject Re: sudden spurt in swap utilization (was:cpu bound postgresql setup.)
Date
Msg-id 4C2477A20200002500032B03@gw.wicourts.gov
Whole thread Raw
In response to Re: sudden spurt in swap utilization (was:cpu bound postgresql setup.)  (Rajesh Kumar Mallah <mallah.rajesh@gmail.com>)
Responses Re: sudden spurt in swap utilization (was:cpu bound postgresql setup.)
List pgsql-performance
Rajesh Kumar Mallah <mallah.rajesh@gmail.com> wrote:

> its now non business hours and
> SELECT procpid,current_query   from pg_stat_activity where
> current_query not ilike '%idle%' ;
> is just 5-10, i am yet to measure it during business hours.

Be careful about '<IDLE> in transaction' status.  Those are a
problem if the transaction remains active for very long, because
vacuum (autovacuum or otherwise) can't free space for dead rows
which could still be visible to the '<IDLE> in transaction'
connection.  It's normal to see this status briefly between
statements in a transaction, but it's a problem if a connection just
sits there in this status.

-Kevin

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