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线上应用OOM分析与处理过程记录（excle到处产生内存溢出）

2022-04-07 18:03:23 作者：互联网

以下内容来自单位同事的技术分享，本人做了简单整理

报警内容

16:19:40至16:21:20【10.176.211.166(10073908643)(正式分组_银行卡)】，JVM监控堆内存使用率=99.77%[偏差5.02%]，超过4次堆内存使用率>=95%

JVM监控

DUMP文件分析

http://172.31.222.23/10.176.211.166/10.176.211.166_jmap_20465_2022-04-07-16-25-45.txt.tar.gz

MAT工具打开dump文件，分析得出造成OOM的堆栈

message-executor:6
  at org.apache.poi.xssf.usermodel.XSSFRichTextString.utfDecode(Ljava/lang/String;)Ljava/lang/String; (XSSFRichTextString.java:480)
  at org.apache.poi.xssf.usermodel.XSSFRichTextString.getString()Ljava/lang/String; (XSSFRichTextString.java:297)
  at org.apache.poi.xssf.usermodel.XSSFCell.setCellValue(Lorg/apache/poi/ss/usermodel/RichTextString;)V (XSSFCell.java:327)
  at org.apache.poi.xssf.usermodel.XSSFCell.setCellValue(Ljava/lang/String;)V (XSSFCell.java:315)
  at com.jd.ql.monitor.receivable.utils.ExcelProducer.produceSheet(Ljava/lang/String;Ljava/util/List;Ljava/util/Map;)Lcom/jd/ql/monitor/receivable/utils/ExcelProducer; (ExcelProducer.java:113)
  at com.jd.ql.monitor.receivable.base.BasePush2JboxTask.process()V (BasePush2JboxTask.java:73)
  at com.jd.wl.data.jdtask.jdTask.JdTaskIterator.process(Lcom/jd/wl/data/jdtask/jdTask/JdTaskBaseTask;)V (JdTaskIterator.java:57)
  at com.jd.wl.data.jdtask.jdTask.JdTaskIterator.process(Lcom/jd/jdtask/executor/api/Task;)V (JdTaskIterator.java:16)
  at com.jd.jdtask.executor.job.JavaTaskProcessHandler.process(Ljava/nio/ByteBuffer;)V (TaskProcessHandler.scala:58)
  at com.jd.jdtask.dispatch.messages.TaskMessage.execute(Lcom/jd/jdtask/dispatch/QueryState;)Lcom/jd/jdtask/dispatch/Message$Response; (TaskMessage.java:78)
  at com.jd.jdtask.dispatch.Message$Dispatcher$1.call()Ljava/lang/Object; (Message.java:432)
  at java.util.concurrent.FutureTask.run()V (FutureTask.java:266)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(Ljava/util/concurrent/ThreadPoolExecutor$Worker;)V (ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run()V (ThreadPoolExecutor.java:617)
  at java.lang.Thread.run()V (Thread.java:745)

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