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Using egrep to identify top CPU consumers
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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

USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND
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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