我正在尝试配置一个Java应用程序,该应用程序使用Java Flight Recorder dumponexit
选项在Windows 10(64位(中作为服务运行。在执行过程中,Windows确实创建了一个临时目录和临时.jfr文件。但是,最终的JFR文件并未在默认目录或用户定义的目录中创建。使用的确切选项是-XX:+UnlockCommercialFeatures -XX:+FlightRecorder -XX:FlightRecorderOptions=defaultrecording=true,dumponexit=true
。
这组选项确实在使用java -XX:+UnlockCommercialFeatures -XX:+FlightRecorder -XX:FlightRecorderOptions=defaultrecording=true,dumponexit=true -jar <AppName>
运行的任何Java应用程序上都可以很好地工作。
在另一种情况下,如果我使用定义持续时间的-XX:StartFlightRecording
选项,则Java Flight Recorder会根据预期在给定目录中创建文件。使用的确切选项是-XX:+UnlockCommercialFeatures -XX:+FlightRecorder -XX:StartFlightRecording=delay=20s,duration=60s,name=MyRecording,filename=C:myrecording.jfr
我的要求说我需要使用以前的选项进行分析。也就是说,每当上述Windows服务启动时,启用了分析,并且每当服务停止时,分析停止并生成.jfr文件。
如果有人使用了连续的记录并解决了此问题,那么该解决方案将不胜感激。
更新:设置日志级别以跟踪以下日志。使用的选项:-XX:FlightRecorderOptions=defaultrecording=true,dumponexit=true,dumponexitpath=C:,loglevel=trace
[2018-02-20 10:36:23] [info] [ 1252] Commons Daemon procrun (1.0.15.0 64-bit) started
[2018-02-20 10:36:23] [info] [ 1252] Running 'XYZ' Service...
[2018-02-20 10:36:23] [info] [ 6292] Starting service...
[2018-02-20 10:36:23] [info] [ 7944] [jfr][INFO ][0.000]
[2018-02-20 10:36:23] [info] [ 7944] JFR log level set. Log level now at [TRACE]
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.163]
[2018-02-20 10:36:23] [info] [ 7944] Loaded JFR library
[2018-02-20 10:36:23] [info] [ 7944] [jfr][INFO ][0.191]
[2018-02-20 10:36:23] [info] [ 7944] Using C:WindowsTemp2018_02_20_10_36_23_12304 as Flight Recorder repository.
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.216]
[2018-02-20 10:36:23] [info] [ 7944] Default settings loaded.
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.218]
[2018-02-20 10:36:23] [info] [ 7944] Shutdown hook registered
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.224]
[2018-02-20 10:36:23] [info] [ 7944] VMJFR created.
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.272]
[2018-02-20 10:36:23] [info] [ 7944] RedefineClass successful
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.274]
[2018-02-20 10:36:23] [info] [ 7944] RedefineClass successful
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.277]
[2018-02-20 10:36:23] [info] [ 7944] RedefineClass successful
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.288]
[2018-02-20 10:36:23] [info] [ 7944] Java started. Took 127 ms
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.290]
[2018-02-20 10:36:23] [info] [ 7944] Starting up default recording
[2018-02-20 10:36:23] [info] [13316] [jfr][DEBUG][0.292]
[2018-02-20 10:36:23] [info] [13316] Bufferthread started.
[2018-02-20 10:36:23] [info] [ 7944] [jfr][INFO ][0.427]
[2018-02-20 10:36:23] [info] [ 7944] Starting recording [id=0, name=HotSpot default, start=Tue Feb 20 10:36:23 GMT 2018]
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.429]
[2018-02-20 10:36:23] [info] [ 7944] Binding recording [id=0, name=HotSpot default, start=Tue Feb 20 10:36:23 GMT 2018]
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.431]
[2018-02-20 10:36:23] [info] [ 7944] Default recording started
[2018-02-20 10:36:23] [info] [ 7944] [jfr][TRACE][0.433]
[2018-02-20 10:36:23] [info] [ 7944] Finished starting default recording
[2018-02-20 10:36:25] [info] [ 6292] Service started in 1799 ms.
[2018-02-20 10:37:40] [info] [ 9208] Stopping service...
[2018-02-20 10:37:42] [info] [ 9208] Service stop thread completed.
[2018-02-20 10:38:42] [info] [ 1252] Run service finished.
[2018-02-20 10:38:42] [info] [ 1252] Commons Daemon procrun finished
我的第一个猜测是它与(文件(权限相关。运行Windows服务的用户可能与您从Shell启动Java进程时不同。也就是说,在设定持续时间时,您能够获得录音,因此理论不坚持。
当您指定doldmonexit = true时,转储将在Java关闭挂钩中执行。如果该过程未正确终止,即该过程被用力杀死,则钩子将永远不会有机会跑步。
如果您可以获取日志,我会尝试以-xx:flightrecorderOptions = loglevel =跟踪启动它,然后查看是否看到任何错误消息。