本篇文章为大家展示了Linux中显示内存和CPU使用率最高的进程是怎么样的及SHELL脚本怎么编写，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
显示CPU占用率最高的十个进程信息
# ps aux|head -1;ps aux|grep -v PID|sort -rn -k +3|head
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 30222 5.0 3.8 10685936 38228 ? Sl Apr24 1453:59 ./pd-server -data-dir=/data/tidb/pd -log-file=/data/tidb/log/pd.log -name=pd1
root 23484 2.4 14.7 779468 147244 ? Sl Apr24 701:46 ./tidb-server -L info -store=tikv –path=/data/tidb/tidb –path=127.0.0.1:2379 -log-file=/data/tidb/log/tidb.log
root 23415 2.0 10.1 1359044 101332 ? S<l Apr24 597:36 ./tikv-server –pd=127.0.0.1:2379 –data-dir=/data/tidb/tikv –log-file=/data/tidb/log/tikv.log
root 9092 0.2 0.1 158240 1972 ? Ssl Mar29 150:51 redis-server 0.0.0.0:6379
root 4072 0.1 0.4 110676 4204 pts/2 Ss 10:16 0:00 -bash
mysql 27252 0.1 16.1 6842120 160408 ? Sl Apr25 50:53 /usr/local/mysql-5.7.25/bin/mysqld –basedir=/usr/local/mysql-5.7.25 –datadir=/data/mysql/data –plugin-dir=/usr/local/mysql-5.7.25/lib/plugin –user=mysql –log-error=/data/mysql/log/mysqld.err –open-files-limit=81920 –pid-file=/data/mysql/mysqld.pid –socket=/tmp/mysql.sock –port=3306
rpcuser 3805 0.0 0.0 28372 8 ? Ss Mar12 0:00 rpc.statd –no-notify
rpc 3798 0.0 0.0 18988 100 ? Ss Mar12 0:13 rpcbind
root 95 0.0 0.0 0 0 ? S Mar12 0:00 [deferwq]
root 944 0.0 0.0 0 0 ? S Mar12 0:24 [kauditd]
显示系统消耗内存资源最高的四个进程
# ps aux | grep -v "USER" | sort -rn -k +4 | head -4 | awk -F ' ' '{print $11,$4}'
/usr/local/mysql-5.7.25/bin/mysqld 16.1
./tidb-server 14.7
./tikv-server 10.1
./pd-server 3.8
虚拟内存使用最多的前10个进程–详细
# ps auxw|head -1;ps auxw|sort -rn -k5|head -10
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
mysql 23730 73.1 82.4 29577272 27209640 ? Sl Apr30 15657:26 /usr/local/mysql/bin/mysqld –basedir=/usr/local/mysql –datadir=/data/mysql –plugin-dir=/usr/local/mysql/lib/plugin –user=mysql –log-error=/data/mysqllog/error.log –open-files-limit=65535 –pid-file=/data/mysql/mysql-zhsq-ref1-168.pid –socket=/var/lib/mysql/mysql.sock
root 1285 0.0 0.0 255616 5456 ? Sl Mar07 10:37 /sbin/rsyslogd -i /var/run/syslogd.pid -c 5
root 3228 0.0 0.0 155444 928 pts/0 S+ 09:01 0:00 sort -rn -k5
root 3783 0.4 0.0 123720 7816 ? S<sl Apr26 126:21 /usr/local/aegis/aegis_client/aegis_10_63/AliYunDun
root 1784 0.0 0.0 116916 1280 ? Ss Mar07 0:13 crond
root 3227 0.0 0.0 110240 1172 pts/0 R+ 09:01 0:00 ps auxw
root 2753 0.0 0.0 108320 1984 pts/0 Ss 08:50 0:00 -bash
root 2992 0.0 0.0 108316 1956 pts/1 Ss+ 08:55 0:00 -bash
root 16579 0.0 0.0 108312 1752 ? Ss Apr24 0:00 -bash
root 2751 0.0 0.0 102552 4508 ? Ss 08:50 0:00 sshd: root@pts/0,pts/1
显示内存按大小排序:
# ps -eo size,pid,user,command –sort -size | awk '{ hr=$1/1024 ; printf("%13.2f Mb ",hr) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }' |cut -d "" -f2 | cut -d "-" -f1
0.00 Mb COMMAND
29381.29 Mb /usr/local/jdk/bin/java
2294.26 Mb /usr/local/cloudmonitor/jre/bin/java
222.86 Mb /sbin/rsyslogd
32.23 Mb /usr/local/aegis/aegis_client/aegis_10_65/AliYunDun
10.67 Mb /usr/local/cloudmonitor/wrapper/bin/./wrapper /usr/local/cloudmonitor/wrapper/bin/../conf/wrapper.conf wrapper.syslog.ident=cloudmonitor wrapper.pidfile=/usr/local/cloudmonitor/wrapper/bin/./cloudmonitor.pid wrapper.daemonize=TRUE wrapper.name=cloudmonitor wrapper.displayname=cloudmonitor wrapper.statusfile=/usr/local/cloudmonitor/wrapper/bin/./cloudmonitor.status wrapper.java.statusfile=/usr/local/cloudmonitor/wrapper/bin/./cloudmonitor.java.status wrapper.lockfile=/var/lock/subsys/cloudmonitor wrapper.script.version=3.5.27
10.30 Mb auditd
4.57 Mb /usr/local/aegis/aegis_update/AliYunDunUpdate
1.40 Mb crond
1.16 Mb ps
0.78 Mb sshd: root@pts/0
0.68 Mb /sbin/udevd
0.68 Mb /sbin/udevd
0.68 Mb /sbin/udevd
0.67 Mb qmgr
0.58 Mb /sbin/dhclient
0.58 Mb /sbin/dhclient
0.58 Mb /usr/sbin/sshd
0.58 Mb /usr/sbin/zabbix_agentd: active checks #1 [idle 1 sec]
0.57 Mb /usr/sbin/zabbix_agentd
………………………………………….
# ps aux | awk '{print $6/1024 " MB/t/t" $11}' | sort -n
# ps aux | awk '{print $6/1024 " MB/t/t" $11}' | sort -n
0 MB [aio/0]
0 MB [aio/1]
0 MB [aio/2]
0 MB [aio/3]
0 MB [async/mgr]
0 MB [ata_aux]
0 MB [ata_sff/0]
0 MB [ata_sff/1]
0 MB [ata_sff/2]
0 MB [ata_sff/3]
0 MB [bdi-default]
0 MB [cgroup]
0 MB COMMAND
0 MB [cqueue]
0 MB [crypto/0]
0 MB [crypto/1]
0 MB [crypto/2]
…………………………………………….
…………………………………………….
…………………………………………….
…………………………………………….
1.51172 MB qmgr
1.80078 MB -bash
2.34766 MB pickup
2.58594 MB /usr/local/aegis/aegis_update/AliYunDunUpdate
4.37891 MB sshd:
5.02734 MB /usr/local/aegis/aegis_client/aegis_10_65/AliYunDun
6.8125 MB /sbin/rsyslogd
63.2031 MB /usr/local/cloudmonitor/jre/bin/java
19845 MB /usr/local/jdk/bin/java
shell脚本一例：
# vim mem.sh
#!/bin/bash
date=`date "+%Y-%m-%d %H:%M:%S"`
#显示消耗资源内存最高的进程名
first=`ps aux | grep -v "grep" | grep -v "USER" | sort -rn -k +4 | head -4 | awk -F ' ' '{print $11}' | sed -n 1p`
Second=`ps aux | grep -v "grep" | grep -v "USER" | sort -rn -k +4 | head -4 | awk -F ' ' '{print $11}' | sed -n 2p`
Third=`ps aux | grep -v "grep" | grep -v "USER" | sort -rn -k +4 | head -4 | awk -F ' ' '{print $11}' | sed -n 3p`
Fourth=`ps aux | grep -v "grep" | grep -v "USER" | sort -rn -k +4 | head -4 | awk -F ' ' '{print $11}' | sed -n 4p`
#显示消耗内存资源最高进程、内存使用率
one=`ps aux | grep -v "grep" | grep -v "USER" | grep "$first" | awk -F ' ' '{print $4}'`
two=`ps aux | grep -v "grep" | grep -v "USER" | grep "$Second" | awk -F ' ' '{print $4}'`
three=`ps aux | grep -v "grep" | grep -v "USER" | grep "$Third" | awk -F ' ' '{print $4}'`
four=`ps aux | grep -v "grep" | grep -v "USER" | grep "$Fourth" | awk -F ' ' '{print $4}'`
#使用echo显示结果
echo "$date $first $one"
echo "$date $Second $two"
echo "$date $Third $three"
echo "$date $Fourth $four"
运行结果展示:
# ./mem.sh
2019-05-14 10:23:00 /usr/local/mysql-5.7.25/bin/mysqld 0.0
16.1
2019-05-14 10:23:00 ./tidb-server 14.7
2019-05-14 10:23:00 ./tikv-server 10.1
2019-05-14 10:23:00 ./pd-server 3.8
上述内容就是Linux中显示内存和CPU使用率最高的进程是怎么样的及SHELL脚本怎么编写，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注亿速云行业资讯频道。
原创文章，作者：奋斗，如若转载，请注明出处：https://blog.ytso.com/199808.html