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Uber jvm profiler如何使用

发表于：2025-01-24 作者：千家信息网编辑

千家信息网最后更新 2025年01月24日，这篇文章将为大家详细讲解有关Uber jvm profiler如何使用，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。背景uber jvm profiler是用于在分

千家信息网最后更新 2025年01月24日Uber jvm profiler如何使用

这篇文章将为大家详细讲解有关Uber jvm profiler如何使用，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

背景

uber jvm profiler是用于在分布式监控收集jvm 相关指标，如:cpu/memory/io/gc信息等

安装

确保安装了maven和JDK>=8前提下，直接mvn clean package

java application

说明
直接以java agent的部署就可以使用
使用
java -javaagent:jvm-profiler-1.0.0.jar=reporter=com.uber.profiling.reporters.KafkaOutputReporter,brokerList='kafka1:9092',topicPrefix=demo_,tag=tag-demo,metricInterval=5000,sampleInterval=0 -cp target/jvm-profiler-1.0.0.jar
选项解释

参数	说明
reporter	reporter类别, 此处直接默认为com.uber.profiling.reporters.KafkaOutputReporter就可以
brokerList	如reporter为com.uber.profiling.reporters.KafkaOutputReporter,则brokerList为kafka列表,以逗号分隔
topicPrefix	如reporter为com.uber.profiling.reporters.KafkaOutputReporter,则topicPrefix为kafka topic的前缀
tag	key为tag的metric，会输出到reporter中
metricInterval	metric report的频率，根据实际情况设置，单位为ms
sampleInterval	jvm堆栈metrics report的频率，根据实际情况设置，单位为ms

结果展示

  "nonHeapMemoryTotalUsed": 11890584.0,  "bufferPools": [      {          "totalCapacity": 0,          "name": "direct",          "count": 0,          "memoryUsed": 0      },      {          "totalCapacity": 0,          "name": "mapped",          "count": 0,          "memoryUsed": 0      }  ],  "heapMemoryTotalUsed": 24330736.0,  "epochMillis": 1515627003374,  "nonHeapMemoryCommitted": 13565952.0,  "heapMemoryCommitted": 257425408.0,  "memoryPools": [      {          "peakUsageMax": 251658240,          "usageMax": 251658240,          "peakUsageUsed": 1194496,          "name": "Code Cache",          "peakUsageCommitted": 2555904,          "usageUsed": 1173504,          "type": "Non-heap memory",          "usageCommitted": 2555904      },      {          "peakUsageMax": -1,          "usageMax": -1,          "peakUsageUsed": 9622920,          "name": "Metaspace",          "peakUsageCommitted": 9830400,          "usageUsed": 9622920,          "type": "Non-heap memory",          "usageCommitted": 9830400      },      {          "peakUsageMax": 1073741824,          "usageMax": 1073741824,          "peakUsageUsed": 1094160,          "name": "Compressed Class Space",          "peakUsageCommitted": 1179648,          "usageUsed": 1094160,          "type": "Non-heap memory",          "usageCommitted": 1179648      },      {          "peakUsageMax": 1409286144,          "usageMax": 1409286144,          "peakUsageUsed": 24330736,          "name": "PS Eden Space",          "peakUsageCommitted": 67108864,          "usageUsed": 24330736,          "type": "Heap memory",          "usageCommitted": 67108864      },      {          "peakUsageMax": 11010048,          "usageMax": 11010048,          "peakUsageUsed": 0,          "name": "PS Survivor Space",          "peakUsageCommitted": 11010048,          "usageUsed": 0,          "type": "Heap memory",          "usageCommitted": 11010048      },      {          "peakUsageMax": 2863661056,          "usageMax": 2863661056,          "peakUsageUsed": 0,          "name": "PS Old Gen",          "peakUsageCommitted": 179306496,          "usageUsed": 0,          "type": "Heap memory",          "usageCommitted": 179306496      }  ],  "processCpuLoad": 0.0008024004394748531,  "systemCpuLoad": 0.23138430784607697,  "processCpuTime": 496918000,  "appId": null,  "name": "24103@machine01",  "host": "machine01",  "processUuid": "3c2ec835-749d-45ea-a7ec-e4b9fe17c23a",  "tag": "mytag",  "gc": [      {          "collectionTime": 0,          "name": "PS Scavenge",          "collectionCount": 0      },      {          "collectionTime": 0,          "name": "PS MarkSweep",          "collectionCount": 0      }  ]}

spark application

说明
和java应用不同，需要把jvm-profiler.jar分发到各个节点上

使用

   --jars hdfs:///public/libs/jvm-profiler-1.0.0.jar      --conf spark.driver.extraJavaOptions=-javaagent:jvm-profiler-1.0.0.jar=reporter=com.uber.profiling.reporters.KafkaOutputReporter,brokerList='kafka1:9092',topicPrefix=demo_,tag=tag-demo,metricInterval=5000,sampleInterval=0    --conf spark.executor.extraJavaOptions=-javaagent:jvm-profiler-1.0.0.jar=reporter=com.uber.profiling.reporters.KafkaOutputReporter,brokerList='kafka1:9092',topicPrefix=demo_,tag=tag-demo,metricInterval=5000,sampleInterval=0

选项解释

参数	说明
reporter	reporter类别, 此处直接默认为com.uber.profiling.reporters.KafkaOutputReporter就可以
brokerList	如reporter为com.uber.profiling.reporters.KafkaOutputReporter,则brokerList为kafka列表,以逗号分隔
topicPrefix	如reporter为com.uber.profiling.reporters.KafkaOutputReporter,则topicPrefix为kafka topic的前缀
tag	key为tag的metric，会输出到reporter中
metricInterval	metric report的频率，根据实际情况设置，单位为ms
sampleInterval	jvm堆栈metrics report的频率，根据实际情况设置，单位为ms

结果展示

  "nonHeapMemoryTotalUsed": 11890584.0,  "bufferPools": [      {          "totalCapacity": 0,          "name": "direct",          "count": 0,          "memoryUsed": 0      },      {          "totalCapacity": 0,          "name": "mapped",          "count": 0,          "memoryUsed": 0      }  ],  "heapMemoryTotalUsed": 24330736.0,  "epochMillis": 1515627003374,  "nonHeapMemoryCommitted": 13565952.0,  "heapMemoryCommitted": 257425408.0,  "memoryPools": [      {          "peakUsageMax": 251658240,          "usageMax": 251658240,          "peakUsageUsed": 1194496,          "name": "Code Cache",          "peakUsageCommitted": 2555904,          "usageUsed": 1173504,          "type": "Non-heap memory",          "usageCommitted": 2555904      },      {          "peakUsageMax": -1,          "usageMax": -1,          "peakUsageUsed": 9622920,          "name": "Metaspace",          "peakUsageCommitted": 9830400,          "usageUsed": 9622920,          "type": "Non-heap memory",          "usageCommitted": 9830400      },      {          "peakUsageMax": 1073741824,          "usageMax": 1073741824,          "peakUsageUsed": 1094160,          "name": "Compressed Class Space",          "peakUsageCommitted": 1179648,          "usageUsed": 1094160,          "type": "Non-heap memory",          "usageCommitted": 1179648      },      {          "peakUsageMax": 1409286144,          "usageMax": 1409286144,          "peakUsageUsed": 24330736,          "name": "PS Eden Space",          "peakUsageCommitted": 67108864,          "usageUsed": 24330736,          "type": "Heap memory",          "usageCommitted": 67108864      },      {          "peakUsageMax": 11010048,          "usageMax": 11010048,          "peakUsageUsed": 0,          "name": "PS Survivor Space",          "peakUsageCommitted": 11010048,          "usageUsed": 0,          "type": "Heap memory",          "usageCommitted": 11010048      },      {          "peakUsageMax": 2863661056,          "usageMax": 2863661056,          "peakUsageUsed": 0,          "name": "PS Old Gen",          "peakUsageCommitted": 179306496,          "usageUsed": 0,          "type": "Heap memory",          "usageCommitted": 179306496      }  ],  "processCpuLoad": 0.0008024004394748531,  "systemCpuLoad": 0.23138430784607697,  "processCpuTime": 496918000,  "appId": null,  "name": "24103@machine01",  "host": "machine01",  "processUuid": "3c2ec835-749d-45ea-a7ec-e4b9fe17c23a",  "tag": "mytag",  "gc": [      {          "collectionTime": 0,          "name": "PS Scavenge",          "collectionCount": 0      },      {          "collectionTime": 0,          "name": "PS MarkSweep",          "collectionCount": 0      }  ]}

分析

已有的reporter

reporter	说明
ConsoleOutputReporter	默认的repoter，一般用于调试
FileOutputReporter	基于文件的reporter,分布式环境下不适用，得设置outputDir
KafkaOutputReporter	基于kafka的reporter，正式环境用的多，得设置brokerList，topicPrefix
GraphiteOutputReporter	基于Graphite的reporter,需设置graphite.host等配置
RedisOutputReporter	基于redis的reporter，构建命令 `mvn -P redis clean package`
InfluxDBOutputReporter	基于InfluxDB的reporter，构建命令`mvn -P influxdb clean package`，需设置influxdb.host等配置

建议在生产环境下使用KafkaOutputReporter，操作灵活性高，可以结合clickhouse grafana进行指标展示

源码分析

该jvm-profiler整体是基于java agent实现,项目pom文件指定了MANIFEST.MF中的Premain-Class项和Agent-Class为com.uber.profiling.Agent 具体的实现类为AgentImpl
就具体的AgentImpl类的run方法来进行分析

public void run(Arguments arguments, Instrumentation instrumentation, Collection objectsToCloseOnShutdown) {      if (arguments.isNoop()) {          logger.info("Agent noop is true, do not run anything");          return;      }      Reporter reporter = arguments.getReporter();      String processUuid = UUID.randomUUID().toString();      String appId = null;      String appIdVariable = arguments.getAppIdVariable();      if (appIdVariable != null && !appIdVariable.isEmpty()) {          appId = System.getenv(appIdVariable);      }      if (appId == null || appId.isEmpty()) {          appId = SparkUtils.probeAppId(arguments.getAppIdRegex());      }      if (!arguments.getDurationProfiling().isEmpty()              || !arguments.getArgumentProfiling().isEmpty()) {          instrumentation.addTransformer(new JavaAgentFileTransformer(arguments.getDurationProfiling(), arguments.getArgumentProfiling()));      }      List profilers = createProfilers(reporter, arguments, processUuid, appId);      ProfilerGroup profilerGroup = startProfilers(profilers);      Thread shutdownHook = new Thread(new ShutdownHookRunner(profilerGroup.getPeriodicProfilers(), Arrays.asList(reporter), objectsToCloseOnShutdown));      Runtime.getRuntime().addShutdownHook(shutdownHook);  }

arguments.getReporter() 获取reporter，如果没有设置则设置为reporterConstructor,否则设置为指定的reporter
String appId ,设置appId，首先从配置中查找，如果没有设置，再从env中查找，对于spark应用则取spark.app.id的值
List profilers = createProfilers(reporter, arguments, processUuid, appId)，创建profilers,默认有CpuAndMemoryProfiler，ThreadInfoProfiler，ProcessInfoProfiler ；
1.其中CpuAndMemoryProfiler，ThreadInfoProfiler，ProcessInfoProfiler是从JMX中读取数据，ProcessInfoProfiler还会从 /pro读取数据；
2.如果设置了durationProfiling，argumentProfiling，sampleInterval，ioProfiling，则会增加对应的MethodDurationProfiler(输出方法调用花费的时间)，MethodArgumentProfiler(输出方法参数的值)，StacktraceReporterProfiler，IOProfiler；
3.MethodArgumentProfiler和MethodDurationProfiler利用javassist第三方字节码编译工具来改写对应的类，具体实现参照JavaAgentFileTransformer
4.StacktraceReporterProfiler从JMX中读取数据
5.IOProfiler则是读取本地机器上的/pro文件对应的目录的数据
ProfilerGroup profilerGroup = startProfilers(profilers) 开始进行profiler的定时report
其中还会区分oneTimeProfilers和periodicProfilers，ProcessInfoProfiler就属于oneTimeProfilers，因为process的信息，在运行期间是不会变的，不需要周期行的reporter
至此，整个流程结束

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