(Sorry if this goes out twice)
We are running Postgres 7.0.3 on a Linux machine with a 2.4.0 kernel.
We have noticed that as we run our application which does
a lot of updates that CPU utilization (by postmaster) gradually
increases as time passes.
We have been able to reproduce it with the following
shell script which we use to feed a continuous stream
of updates to the DB:
-----------------
#!/bin/sh
while ( true ) ; do
echo "update ruser set cname='xyz' where userid='abcdef'; "
done
-----------------
We connect it to psql to send the updates to the DB as follows:
./psql_perf2.sh | psql -U AAA DBNAME -q
When we start the script, the "top" command shows about 75%
CPU utilization but this gradually increases to 97%
in a few minutes.
Could anyone suggest a reason for this behavior?
Thanks
R. Anand