如何在linux中查找用户内存使用情况
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How to find user memory usage in linux
提问by Hamidreza
How i can see memory usage by user in linux centos 6
我如何在 linux centos 6 中查看用户的内存使用情况
For example:
USER USAGE
root 40370
admin 247372
user2 30570
user3 967373
采纳答案by scai
per-user memory usage in percent using standard tools:
使用标准工具的每用户内存使用百分比：
for USER in $(ps haux | awk '{print }' | sort -u)
do
ps haux | awk -v user=$USER ' ~ user { sum += } END { print user, sum; }'
done
or for more precision:
或者为了更精确：
TOTAL=$(free | awk '/Mem:/ { print }')
for USER in $(ps haux | awk '{print }' | sort -u)
do
ps hux -U $USER | awk -v user=$USER -v total=$TOTAL '{ sum += } END { printf "%s %.2f\n", user, sum / total * 100; }'
done
The first version just sums up the memory percentage for each process as reported by ps. The second version sums up the memory in bytes instead and calculates the total percentage afterwards, thus leading to a higher precision.
第一个版本只是总结了每个进程的内存百分比，如ps. 第二个版本以字节为单位总结内存，然后计算总百分比，从而导致更高的精度。
回答by Audrius Meskauskas
If your system supports, try to install and use smem:
如果您的系统支持，请尝试安装和使用smem：
smem -u
User Count Swap USS PSS RSS
gdm 1 0 308 323 820
nobody 1 0 912 932 2240
root 76 0 969016 1010829 1347768
or
或者
smem -u -t -k
User Count Swap USS PSS RSS
gdm 1 0 308.0K 323.0K 820.0K
nobody 1 0 892.0K 912.0K 2.2M
root 76 0 937.6M 978.5M 1.3G
ameskaas 46 0 1.2G 1.2G 1.5G
124 0 2.1G 2.2G 2.8G
In Ubuntu, smem can be installed by typing
在 Ubuntu 中，可以通过键入来安装 smem
sudo apt install smem
回答by Joshua Huber
This one-liner worked for me on at least four different Linux systems with different distros and versions. It also worked on FreeBSD 10.
这个单行程序在至少四个不同发行版和版本的 Linux 系统上对我有用。它也适用于 FreeBSD 10。
ps hax -o rss,user | awk '{a[]+=;}END{for(i in a)print i" "int(a[i]/1024+0.5);}' | sort -rnk2
About the implementation, there are no shell loop constructs here; this uses an associative array in awkto do the grouping & summation.
关于实现，这里没有shell循环结构；这使用关联数组进行awk分组和求和。
Here's sample output from one of my servers that is running a decent sized MySQL, Tomcat, and Apache. Figures are in MB.
下面是我的一台服务器的示例输出，该服务器运行了相当规模的 MySQL、Tomcat 和 Apache。数字以 MB 为单位。
mysql 1566
joshua 1186
tomcat 353
root 28
wwwrun 12
vbox 1
messagebus 1
avahi 1
statd 0
nagios 0
Caveat: like most similar solutions, this is only considering the resident set (RSS), so it doesn't count any shared memory segments.
警告：像大多数类似的解决方案一样，这只是考虑了常驻集 (RSS)，因此它不计算任何共享内存段。
EDIT: A more human-readable version.
编辑：一个更易读的版本。
echo "USER RSS PROCS" ; echo "-------------------- -------- -----" ; ps hax -o rss,user | awk '{rss[]+=;procs[]+=1;}END{for(user in rss) printf "%-20s %8.0f %5.0f\n", user, rss[user]/1024, procs[user];}' | sort -rnk2
And the output:
和输出：
USER RSS PROCS
-------------------- -------- -----
mysql 1521 1
joshua 1120 28
tomcat 379 1
root 19 107
wwwrun 10 10
vbox 1 3
statd 1 1
nagios 1 1
messagebus 1 1
avahi 1 1
回答by Hridoy Sankar Dutta
You can use the following Python script to find per-user memory usage using only sys and os module.
您可以使用以下 Python 脚本仅使用 sys 和 os 模块查找每个用户的内存使用情况。
import sys
import os
# Get list of all users present in the system
allUsers = os.popen('cut -d: -f1 /etc/passwd').read().split('\n')[:-1]
for users in allUsers:
# Check if the home directory exists for the user
if os.path.exists('/home/' + str(users)):
# Print the current usage of the user
print(os.system('du -sh /home/' + str(users)))
回答by Pradeep Pathak
This will return the total ram usage by users in GBs, reverse sorted
这将返回用户的总内存使用量（以 GB 为单位），反向排序
sudo ps --no-headers -eo user,rss | awk '{arr[]+=}; END {for (i in arr) {print i,arr[i]/1024/1024}}' | sort -nk2 -r
