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如何监控用户的 CPU 使用情况？

tag-icon • tag-icon ubuntu centos cpu
如何监控用户的 CPU 使用情况？

我需要监控两台服务器（Ubuntu 和 CentOS）的用户的 CPU 使用情况。例如：

user1     5%
user2    10%
...

有类似的工具top或者htop可以做到这一点吗？

答案1

这是一个打印的脚本全部的每个用户的CPU使用率当前登录,显示PerUserCPU.sh:

own=$(id -nu)
cpus=$(lscpu | grep "^CPU(s):" | awk '{print $2}')

for user in $(who | awk '{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 { 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; }'

这是一个稍微修改过的版本，用于打印 CPU 使用率全部可用用户（但跳过 CPU 使用率为零的用户），showAllPerUserCPU.sh:

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; }'

第一列代表用户名，第二列代表聚合的 CPU 使用情况，第三列代表根据 CPU 核心数量标准化的 CPU 使用情况。

还有一个相关的脚本用于显示全部的每个用户的内存使用情况：showPerUserMem.sh

对于实时监控，只需通过watch命令定期执行这些脚本即可。

要按 CPU 使用率排序，请将输出通过管道传输到sort -k2 -nr.

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