jvm监控命令-jstat

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jstat

用于查看服务器上某个服务的GC情况。
一般使用方式jstat –gcpid或jstat –utilpid 时间间隔—每个一定时间（指定的时间间隔）输出一次进程pid的内存情况及gc情况。

1. 类加载统计(-class)

[lillcol@node1 lillcol]# jstat -class 22363
Loaded  Bytes  Unloaded  Bytes     Time
 19410 39919.5      112   155.0      10.18

1. 编译统计(-compiler)

[lillcol@node1 lillcol]# jstat -compiler 22363
Compiled Failed Invalid   Time   FailedType FailedMethod
   25021      2       0    71.64          1 org/apache/spark/ContextCleaner$$anonfun$org$apache$spark$ContextCleaner$$keepCleaning$1 apply$mcV$sp

1. JVM编译方法统计(-printcompilation)

[lillcol@node1 lillcol]# jstat -printcompilation 22363
]Compiled  Size  Type Method
   28252   1074    1 org/apache/kafka/clients/consumer/internals/ConsumerNetworkClient isUnavailable

1. 垃圾回收统计(-gc)

[lillcol@node1 lillcol]# jstat -gc 22363
' S0C    S1C    S0U    S1U      EC       EU        OC         OU       MC     MU    CCSC   CCSU   YGC     YGCT    FGC    FGCT     GCT
20480.0 21504.0  0.0   8046.8 303104.0 70274.5   260608.0   177324.4  118860.0 116592.4 16460.0 15856.7    105    1.333   6      0.693    2.026

1. 堆内存统计(-gccapacity)

[lillcol@node1 lillcol]# jstat -gccapacity 22363
 NGCMN    NGCMX     NGC     S0C   S1C       EC      OGCMN      OGCMX       OGC         OC       MCMN     MCMX      MC     CCSMN    CCSMX     CCSC    YGC    FGC
 41472.0 349184.0 349184.0  512.0  512.0 348160.0    83456.0   699392.0   317440.0   317440.0      0.0 1153024.0 120908.0      0.0 1048576.0  16716.0    419     8

1. 新生代垃圾回收统计(-gcnew)

[lillcol@node1 lillcol]# jstat -gcnew 22363
 S0C    S1C    S0U    S1U   TT MTT  DSS      EC       EU     YGC     YGCT
 512.0  512.0    0.0  128.0 15  15  512.0 348160.0  97478.9   1341    5.736

1. 新生代垃圾回收统计(-gcnewcapacity)

[lillcol@node1 lillcol]# jstat -gcnewcapacity 22363
  NGCMN      NGCMX       NGC      S0CMX     S0C     S1CMX     S1C       ECMX        EC      YGC   FGC
   41472.0   349184.0   349184.0 116224.0    512.0 116224.0    512.0   348160.0   348160.0  2416    10

1. 老年代垃圾回收统计(-gcold)

[lillcol@node1 lillcol]# jstat -gcold 22363
   MC       MU      CCSC     CCSU       OC          OU       YGC    FGC    FGCT     GCT
121164.0 118770.2  16716.0  16085.7    317440.0    309862.2   1433     8    1.024    7.017

1. 老年代内存统计(-gcoldcapacity)

[lillcol@node1 lillcol]# jstat -gcoldcapacity 22363
   OGCMN       OGCMX        OGC         OC       YGC   FGC    FGCT     GCT
    83456.0    699392.0    317440.0    317440.0  1488     8    1.024    7.164

1. 元数据空间统计(-gcmetacapacity)

[lillcol@node1 lillcol]# jstat -gcmetacapacity 22363
   MCMN       MCMX        MC       CCSMN      CCSMX       CCSC     YGC   FGC    FGCT     GCT
       0.0  1155072.0   121420.0        0.0  1048576.0    16716.0  1529     9    1.151    7.574

1. 总结垃圾回收统计(-gcutil)

[lillcol@node1 lillcol]# jstat -gcutil 22363
  S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT
 25.00   0.00  59.99  74.55  97.84  96.10   1610    6.642     9    1.151    7.794

jvm监控命令-jstat

标签：eve   时间间隔   pac   类加载   ali   node   $1   查看   输出   

原文地址：https://www.cnblogs.com/lillcol/p/11718892.html