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Blankman
Asked: 2011-12-24 14:19:00 +0800 CST

Is it possible to filter top to show specific processes?

  • 772

I'm run top and I want to always see java/tomcat/redis/mysql/mongo, is that possible?

ubuntu performance-monitoring top

4 Answers

  1. You could to something like this

    top -p `pgrep -d ',' "java|tomcat|redis|mysql|mongo"`

    This gets pgrep to produce a comma separated list of pid's that are passed to top -p

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  2. Not quite what you're looking for, but sometimes a process is run by it's own user, like apache2 is often run by user www-data.

    You can use that to limit top's output to only the processes by that user, effectively only showing apache2 processes by using this command:

    top -u www-data
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  3. Check man top manual page for more details about top utility...

    Semms you need -p parameter

    -p : Monitor PIDs as: -pN1 -pN2 ... or -pN1, N2 [,...]

            Monitor only processes with specified process  IDs.   This  option
        can  be given up to 20 times, or you can provide a comma delimited
        list  with  up  to  20  pids.   Co-mingling  both  approaches   is
        permitted.
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  4. Try this:

    alias mytop='echo $(sed "s/\([0-9]*\)/-p \1/g;s/^/top /" <(pgrep -d" " "java|redis|mysql|mongo"))'
mytop
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