1、用top命令指定固定的PID

top -p 10997

查询指定进程的PID

ps -ef | grep zookeeper

jim 10997 1959 0 12月14 pts/2 00:00:01 /usr/lib/jvm/java-8-oracle/bin/java -Dzookeeper.log.dir=. -Dzookeeper.root.logger=INFO,CONSOLE -cp /home/jim/opt/zookeeper-3.4.9/bin/../build/classes:/home/jim/opt/zookeeper-3.4.9/bin/../build/lib/*.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar:/home/jim/opt/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar:/home/jim/opt/zookeeper-3.4.9/bin/../src/java/lib/*.jar:/home/jim/opt/zookeeper-3.4.9/bin/../conf: -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=false org.apache.zookeeper.server.quorum.QuorumPeerMain /home/jim/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg

2、使用ps查询指定进程名或者PID的占用情况

ps -aux | grep zookeeper

ps -aux | grep 2181

jim 10997 0.0 0.1 11522940 65176 pts/2 Sl 12月14 0:01 /usr/lib/jvm/java-8-oracle/bin/java -Dzookeeper.log.dir=. -Dzookeeper.root.logger=INFO,CONSOLE -cp /home/jim/opt/zookeeper-3.4.9/bin/../build/classes:/home/jim/opt/zookeeper-3.4.9/bin/../build/lib/*.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar:/home/jim/opt/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar:/home/jim/opt/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar:/home/jim/opt/zookeeper-3.4.9/bin/../src/java/lib/*.jar:/home/jim/opt/zookeeper-3.4.9/bin/../conf: -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=false org.apache.zookeeper.server.quorum.QuorumPeerMain /home/jim/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg

10997为PID

0.0为CPU占用百分比(注意：如果有两个CPU，32核64线程，那么总占比是6400%)

0.1为内存占用百分比

3、查看更详细的内存占比

cat /proc/10997/status

Name: java

State: S (sleeping)

Tgid: 10997

Ngid: 0

Pid: 10997

PPid: 1959

TracerPid: 0

Uid: 1000 1000 1000 1000

Gid: 1000 1000 1000 1000

FDSize: 256

Groups: 4 24 27 30 46 113 128 130 132 134 1000 1002

NStgid: 10997

NSpid: 10997

NSpgid: 10987

NSsid: 10914

VmPeak: 11522940 kB

VmSize: 11522940 kB

VmLck: 0 kB

VmPin: 0 kB

VmHWM: 65176 kB

VmRSS:65176kB

VmData: 11462972 kB

VmStk: 140 kB

VmExe: 4 kB

VmLib: 17064 kB

VmPTE: 460 kB

VmPMD: 28 kB

VmSwap: 0 kB

HugetlbPages: 0 kB

Threads: 25

SigQ: 0/128292

SigPnd: 0000000000000000

ShdPnd: 0000000000000000

SigBlk: 0000000000000000

SigIgn: 0000000000000003

SigCgt: 2000000181005ccc

CapInh: 0000000000000000

CapPrm: 0000000000000000

CapEff: 0000000000000000

CapBnd: 0000003fffffffff

CapAmb: 0000000000000000

Seccomp: 0

Cpus_allowed: ff

Cpus_allowed_list: 0-7

Mems_allowed: 00000000,00000001

Mems_allowed_list: 0

voluntary_ctxt_switches: 86

nonvoluntary_ctxt_switches: 2

VmRSS为内存

转载：https://blog.csdn.net/zhufengyan521521/article/details/84674617