记一次jvm参数配置

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# jvm 参数优化之前 ===> 启动 4天， full gc 5次 young gc 1000+次 
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# jvm 参数优化之前 ===> 启动 4天， full gc 5次   young gc 1000+次

        docker ps
                CONTAINER ID   IMAGE          COMMAND                  CREATED       STATUS      PORTS     NAMES
                e5d0c04827ab   52969d3207dc   "/bin/sh -c 'java ${…"   4 days ago    Up 4 days             new-bi-service
                6861c07368c3   f54b34579541   "/bin/sh -c 'java ${…"   13 days ago   Up 4 days             hawkeye-service
                da06fb7f850f   dc5a38c3e570   "/bin/sh -c 'java ${…"   2 weeks ago   Up 4 days             message-service

        jstat -gcutil 1 1000 # new-bi-service ===> 启动 4天， full gc 5次   young gc 1031次
                S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT   
                0.00  56.25  75.78  97.03  94.67  92.40   1031    7.675     5    0.639    8.314
                0.00  56.25  75.89  97.03  94.67  92.40   1031    7.675     5    0.639    8.314
                0.00  56.25  76.36  97.03  94.67  92.40   1031    7.675     5    0.639    8.314
                0.00  56.25  76.47  97.03  94.67  92.40   1031    7.675     5    0.639    8.314
                0.00  56.25  89.13  97.03  94.67  92.40   1031    7.675     5    0.639    8.314
                0.00  56.25  89.24  97.03  94.67  92.40   1031    7.675     5    0.639    8.314
                0.00  56.25  89.60  97.03  94.67  92.40   1031    7.675     5    0.639    8.314

        jstat -gcutil 1 1000 # hawkeye-service ===> 启动 4天， full gc 5次   young gc 1378次
                  S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT   
                 68.23   0.00  31.98  87.31  94.80  92.50   1378   11.380     5    0.912   12.292
                 68.23   0.00  32.34  87.31  94.80  92.50   1378   11.380     5    0.912   12.292
                 68.23   0.00  32.86  87.31  94.80  92.50   1378   11.380     5    0.912   12.292
                 68.23   0.00  32.98  87.31  94.80  92.50   1378   11.380     5    0.912   12.292
                 68.23   0.00  33.50  87.31  94.80  92.50   1378   11.380     5    0.912   12.292
                 68.23   0.00  33.63  87.31  94.80  92.50   1378   11.380     5    0.912   12.292
# jmap 不能查看，加 docker 参数 => --cap-add=SYS_PTRACE 
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# jmap 不能查看，加 docker 参数 => --cap-add=SYS_PTRACE
        
        完整 docker run 参数
                -d -v /home/amoros/new-bi-service:/root/new-bi-service -v /opt/skywalking-agent:/opt/skywalking-agent --net host --cap-add=SYS_PTRACE

        docker ps
            CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS          PORTS     NAMES
            fefc0ea25e6d   73a2ab44f015   "/bin/sh -c 'java ${…"   25 minutes ago   Up 25 minutes             new-bi-service

        jstat -gcutil 1 1000 # new-bi-service ===> 启动 25min， full gc 4次   young gc 28次
                S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT   
                0.00   0.00  88.85  31.76  95.24  93.43     28    0.197     4    0.312    0.508
                0.00   0.00  88.86  31.76  95.24  93.43     28    0.197     4    0.312    0.508
                0.00   0.00  88.86  31.76  95.24  93.43     28    0.197     4    0.312    0.508
                0.00   0.00  88.87  31.76  95.24  93.43     28    0.197     4    0.312    0.508
                0.00   0.00  88.88  31.76  95.24  93.43     28    0.197     4    0.312    0.508

        jmap -heap 1 # new-bi-service
                Attaching to process ID 1, please wait...
                Debugger attached successfully.
                Server compiler detected.
                JVM version is 25.332-b09

                using thread-local object allocation.
                Parallel GC with 2 thread(s)

                Heap Configuration:
                   MinHeapFreeRatio         = 0
                   MaxHeapFreeRatio         = 100
                   MaxHeapSize              = 2579496960 (2460.0MB)
                   NewSize                  = 53477376 (51.0MB)
                   MaxNewSize               = 859832320 (820.0MB)
                   OldSize                  = 108003328 (103.0MB)
                   NewRatio                 = 2
                   SurvivorRatio            = 8
                   MetaspaceSize            = 21807104 (20.796875MB)
                   CompressedClassSpaceSize = 1073741824 (1024.0MB)
                   MaxMetaspaceSize         = 17592186044415 MB
                   G1HeapRegionSize         = 0 (0.0MB)

                Heap Usage:
                PS Young Generation
                Eden Space:
                   capacity = 827326464 (789.0MB)
                   used     = 794996168 (758.1674270629883MB)
                   free     = 32330296 (30.83257293701172MB)
                   96.09219607895922% used
                From Space:
                   capacity = 9961472 (9.5MB)
                   used     = 0 (0.0MB)
                   free     = 9961472 (9.5MB)
                   0.0% used
                To Space:
                   capacity = 16252928 (15.5MB)
                   used     = 0 (0.0MB)
                   free     = 16252928 (15.5MB)
                   0.0% used
                PS Old Generation
                   capacity = 163053568 (155.5MB)
                   used     = 51779776 (49.38104248046875MB)
                   free     = 111273792 (106.11895751953125MB)
                   31.756297415092444% used

                39120 interned Strings occupying 4104448 bytes.
# jvm 参数优化之后 => 运行 16hours， YGC=30次，FGC=0次 
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# jvm 参数优化之后 => 运行 16hours， YGC=30次，FGC=0次

        Dockerfile
                ------
                FROM adoptopenjdk/openjdk8:centos

                LABEL name=TaoPanfeng

                ENV APP=new-bi-service
                ENV WORKDIR=/root/$APP
                ENV SKYWALKING="-javaagent:/opt/skywalking-agent/skywalking-agent.jar -DSW_AGENT_NAME=$APP -DSW_AGENT_COLLECTOR_BACKEND_SERVICES=10.11.12.206:11800 -DSW_AGENT_SPAN_LIMIT=2000"
                #               堆min 堆max   E      栈        元空间初始化           元空间最大
                ENV JVM_ARGS=" -Xms2g -Xmx2g -Xmn1g -Xss1m -XX:MetaspaceSize=256m -XX:MaxMetaspaceSize=256m "

                WORKDIR $WORKDIR

                # 时间同步（容器与Linux主机）
                RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo Asia/Shanghai > /etc/timezone

                COPY ./$APP/target/$APP.jar /$APP.jar

                EXPOSE 18004

                CMD java ${SKYWALKING} ${JVM_ARGS} -jar /$APP.jar
                ------

        docker ps
                CONTAINER ID   IMAGE          COMMAND                  CREATED        STATUS        PORTS     NAMES
                d7b69b0999ed   03a24aed43cf   "/bin/sh -c 'java ${…"   16 hours ago   Up 16 hours             hawkeye-service
                b792646ca08a   e37559a7d1d6   "/bin/sh -c 'java ${…"   16 hours ago   Up 16 hours             message-service
                f7117e3139b7   c8fee11de56a   "/bin/sh -c 'java ${…"   16 hours ago   Up 16 hours             new-bi-service

        jstat -gcutil 1 1000 # new-bi-service
                 S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT   
                12.50   0.00  76.18   6.56  94.82  92.59     30    0.496     0    0.000    0.496
                12.50   0.00  76.18   6.56  94.82  92.59     30    0.496     0    0.000    0.496
                12.50   0.00  76.19   6.56  94.82  92.59     30    0.496     0    0.000    0.496
                12.50   0.00  76.46   6.56  94.82  92.59     30    0.496     0    0.000    0.496
                12.50   0.00  76.46   6.56  94.82  92.59     30    0.496     0    0.000    0.496

        jstat -gcutil 1 1000 # hawkeye-service
                S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT   
                0.00  25.27  64.77   8.93  94.93  92.69     31    0.458     0    0.000    0.458
                0.00  25.27  64.77   8.93  94.93  92.69     31    0.458     0    0.000    0.458
                0.00  25.27  65.03   8.93  94.93  92.69     31    0.458     0    0.000    0.458
                0.00  25.27  65.03   8.93  94.93  92.69     31    0.458     0    0.000    0.458

        jmap -heap 1 # new-bi-service
                Attaching to process ID 1, please wait...
                Debugger attached successfully.
                Server compiler detected.
                JVM version is 25.332-b09

                using thread-local object allocation.
                Parallel GC with 2 thread(s)

                Heap Configuration:
                   MinHeapFreeRatio         = 0
                   MaxHeapFreeRatio         = 100
                   MaxHeapSize              = 2147483648 (2048.0MB)
                   NewSize                  = 1073741824 (1024.0MB)
                   MaxNewSize               = 1073741824 (1024.0MB)
                   OldSize                  = 1073741824 (1024.0MB)
                   NewRatio                 = 2
                   SurvivorRatio            = 8
                   MetaspaceSize            = 268435456 (256.0MB)
                   CompressedClassSpaceSize = 260046848 (248.0MB)
                   MaxMetaspaceSize         = 268435456 (256.0MB)
                   G1HeapRegionSize         = 0 (0.0MB)

                Heap Usage:
                PS Young Generation
                Eden Space:
                   capacity = 1029177344 (981.5MB)
                   used     = 1014942776 (967.9248580932617MB)
                   free     = 14234568 (13.575141906738281MB)
                   98.61689843028647% used
                From Space:
                   capacity = 23068672 (22.0MB)
                   used     = 2884080 (2.7504730224609375MB)
                   free     = 20184592 (19.249526977539062MB)
                   12.50215010209517% used
                To Space:
                   capacity = 21495808 (20.5MB)
                   used     = 0 (0.0MB)
                   free     = 21495808 (20.5MB)
                   0.0% used
                PS Old Generation
                   capacity = 1073741824 (1024.0MB)
                   used     = 70480320 (67.21527099609375MB)
                   free     = 1003261504 (956.7847290039062MB)
                   6.56399130821228% used

下面是我的截图

在这里插入图片描述