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
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 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 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=$1/1024 ; printf(".2f Mb ",hr) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$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，欢迎关注行业资讯频道。
