Created
January 3, 2021 12:22
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show per user CPU usage
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| #!/bin/sh | |
| # | |
| # print total CPU usage in percent of all available users | |
| # but skips the ones with a CPU usage of zero | |
| # | |
| # 1st column: user | |
| # 2nd column: aggregated CPU usage | |
| # 3rd column: normalized CPU usage according to the number of cores | |
| # | |
| # to sort by CPU usage, pipe the output to 'sort -k2 -nr' | |
| # | |
| set -e | |
| own=$(id -nu) | |
| cpus=$(lscpu | grep "^CPU(s):" | awk '{print $2}') | |
| for user in $(getent passwd | awk -F ":" '{print $1}' | sort -u) | |
| do | |
| # print other user's CPU usage in parallel but skip own one because | |
| # spawning many processes will increase our CPU usage significantly | |
| if [ "$user" = "$own" ]; then continue; fi | |
| (top -b -n 1 -u "$user" | awk -v user=$user -v CPUS=$cpus 'NR>7 { sum += $9; } END { if (sum > 0.0) print user, sum, sum/CPUS; }') & | |
| # don't spawn too many processes in parallel | |
| sleep 0.05 | |
| done | |
| wait | |
| # print own CPU usage after all spawned processes completed | |
| top -b -n 1 -u "$own" | awk -v user=$own -v CPUS=$cpus 'NR>7 { sum += $9; } END { print user, sum, sum/CPUS; }' |
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From this link: https://unix.stackexchange.com/a/120581/126485