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Using egrep to identify top CPU consumers
Oracle Tips by Burleson Consulting


Using egrep to identify top CPU consumers

Yet another approach uses the extended grep command (egrep command) to display the top CPU consumers. I learned this command from an older UNIX guru who is no longer with us, and I must confess that I do not understand the syntax. In the output below we see a root process called kproc using 88.3% of the CPU:

root> ps augxww|egrep "RSS| "|head

root 516 88.3 0.0 16 4 - A Nov 21 194932:05 kproc
oracle 41616 4.4 1.0 8312 6052 - A 07:00:59 4:57
oracle 20740 2.7 1.0 8140 5888 - A 08:52:32 0:02
oracle 17402 2.4 1.0 8296 6044 - A 07:27:04 2:06
oracle 25754 2.4 1.0 8640 6388 - A 08:10:03 1:03
oracle 13168 1.6 1.0 8196 5760 - A 05:33:06 3:15
oracle 20666 1.0 1.0 8304 6052 - A 08:15:19 0:22
oracle 14922 0.6 1.0 8300 5720 - A 01:01:46 2:57
oracle 44518 0.6 1.0 8080 5828 - A 08:47:47 0:02

The above is an excerpt from the "Oracle9i UNIX Administration Handbook" by Oracle press, authored by Donald K. Burleson.


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