Linux下查看某個進程佔用的CPU、內存

1、用top命令指定固定的PID

top -p 10997

查詢指定進程的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查詢指定進程名或者PID的佔用情況

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爲PID

0.0爲CPU佔用百分比(注意:如果有兩個CPU,32核64線程,那麼總佔比是6400%)

0.1爲內存佔用百分比

3、查看更詳細的內存佔比

cat /proc/10997/status

複製代碼

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:       65176 kB
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

複製代碼

VmRSS爲內存

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