Updated top ten memory utilizing processes (child/instance aggregation) now with percentages of total RAM

TR=`free|grep Mem:|awk '{print $2}'`;ps axo rss,comm,pid|awk -v tr=$TR '{proc_list[$2]+=$1;} END {for (proc in proc_list) {proc_pct=(proc_list[proc]/tr)*100; printf("%d\t%-16s\t%0.2f%\n",proc_list[proc],proc,proc_pct);}}'|sort -n |tail -n 10

Prints the top 10 memory consuming processes (with children and instances aggregated) sorted by total RSS and calculates the percentage of total RAM each uses. Please note that since RSS can include shared libraries it is possible for the percentages to add up to more that the total amount of RAM, but this still gives you a pretty good idea. Also note that this does not work with the mawk version of awk, but it works fine with GNU Awk which is on most Linux systems. It also does not work on OS X.

Sample Output

2584    cupsd                   0.25%
3096    tlsmgr                  0.30%
3624    getty                   0.35%
3948    nm-system-setti         0.38%
3968    gdm                     0.38%
4668    hald                    0.45%
6404    sshd                    0.61%
14716   apache2                 1.40%
22104   mysqld                  2.11%
33400   console-kit-dae         3.18%

By: d34dh0r53

2010-03-27 01:34:50

awk grep sort tail

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What Others Think

a gem

linuxrawkstar · 757 weeks and 4 days ago

I like it, but I want it reversed. I put "tac" at the end. TR=`free|grep Mem:|awk '{print $2}'`;ps axo rss,comm,pid|awk -v tr=$TR '{proc_list[$2]+=$1;} END {for (proc in proc_list) {proc_pct=(proc_list[proc]/tr)*100; printf("%d\t%-16s\t%0.2f%\n",proc_list[proc],proc,proc_pct);}}'|sort -n |tail -n 10 | tac

rthemocap · 757 weeks and 3 days ago

Or, you can change "sort -n|tail -n 10" to "sort -nr|head -n 10" if you want it reversed. I added a column description by adding this line in front. printf "%-7s\t%-16s\t%-4s\n" RSS COMMAND RSS%;

beila · 756 weeks and 2 days ago

You need to change %0.2f% to %0.2f in the second awk, my system wouldn't run the command until I fixed it.

g0tmk · 670 weeks ago

rahimhh21 · 109 weeks and 1 day ago

Perfecthomepugs · 100 weeks and 3 days ago

pugpuppies95 · 62 weeks and 4 days ago

yeneba6574 · 17 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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