CODEWITHSUNDEEP
linuxbashsh
Michele
Michele

Reputation: 1488

small sh script to log processes ram and cpu usage

i have the following sh script, on a centos machine:

echo "PID,CPU,MEM,PROC"
while [ 1 ]
do
    ps aux | grep mysql | awk '{print  $2",", $3",", $4",", $11}'
    sleep 1
done

the output every cycle has this output:

1163, 0.0, 0.0, /bin/sh
1265, 0.0, 1.5, /usr/libexec/mysqld
11807, 0.0, 0.3, grep

I wonder how to cycle the outputs and use variables to merge the value and return just one line: i don't need PID and PROC in the merged result

mysql, 0.0, 1.8

where 0.0 is CPU (all processes cpu usage sum) and 1.8 RAM (all processes ram usage sum).

Upvotes: 3

Views: 4886

Answers (1)

konsolebox
konsolebox

Reputation: 75618

ps -eo "comm %cpu %mem" --no-headers | awk '{a[$1] = $1; b[$1] += $2; c[$1] += $3}END{for (i in a)printf "%s, %0.1f, %0.1f\n", a[i], b[i], c[i]}' | sort

Example output:

awk, 0.0, 0.0
bash, 0.0, 1.5
ps, 0.0, 0.0
sort, 0.0, 0.0

Process specific:

ps -C bash -o "comm %cpu %mem" --no-headers | awk '{a[$1] = $1; b[$1] += $2; c[$1] += $3}END{for (i in a)printf "%s, %0.1f, %0.1f\n", a[i], b[i], c[i]}'

Output:

bash, 0.0, 1.5

Upvotes: 4

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