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Postgres performance issue with High CPU usage

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List, 

Could someone point out how can I trace what causes the edb-postgres  process with  %CPU usage reaching 73 to 80.1 percentage  in this box.   What's wrong with the server VM..

The clients connecting the databases experience  slow responses ..

The top out put of the DB server is  pasted below..


Any hints  much appreciated to trouble shoot this unusual load on the server instance. 

Thank you,
Krishane.




I

top - 22:34:13 up 61 days,  7:43,  3 users,  load average: 8.76, 9.92, 19.12
Tasks: 697 total,   9 running, 687 sleeping,   1 stopped,   0 zombie
%Cpu(s): 34.3 us, 18.7 sy,  0.0 ni, 46.2 id,  0.0 wa,  0.5 hi,  0.3 si,  0.0 st
MiB Mem :  31837.6 total,   1296.9 free,  11447.0 used,  27969.1 buff/cache
MiB Swap:   8060.0 total,   7400.0 free,    660.0 used.  20390.5 avail Mem

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
4007576 enterpr+  20   0 8944520 951764 941212 R  80.1   2.9   0:57.24 edb-postgres
4035945 enterpr+  20   0 8943056 472108 463068 R  79.7   1.4   0:11.48 edb-postgres
4020721 enterpr+  20   0 8925752 702836 689644 S  73.1   2.2   0:27.99 edb-postgres
4036409 enterpr+  20   0 8916540 368084 363772 S  43.5   1.1   0:01.31 edb-postgres
4036410 enterpr+  20   0 8928512 481808 469852 S  32.2   1.5   0:03.52 edb-postgres
 442070 enterpr+  20   0 8908184 181248 180096 S  13.0   0.6   1391:16 edb-postgres
4041239 enterpr+  20   0 8921696 995.0m 986.1m S   9.0   3.1   0:00.75 edb-postgres
4041225 enterpr+  20   0 8921856 

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