#java #JvmPerformanceAnalysis #GCLogAnalysis #HeapDumpAnalysis
How to analyze GC Log using GcEasy.io ?
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What Is a GC Log?
What Does a GC Log Look Like?
How to Generate a GC Log?
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► Important Information about this Tutorial
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Java Virtual Machine (JVM) generates 3 critical artifacts that are useful for optimizing the performance and troubleshooting production problems. Those artifacts are:
Garbage collection (GC) log
Thread Dump
Heap Dump
Garbage Collection Log
a) What Is a GC Log?
GC Log contains garbage collection events related information. It will indicate how many GC events ran, what type of GC events they are (i.e. Young GC or Full GC), how long each GC event pause the application, how much objects did each GC event reclaim.
b) What Does a GC Log Look Like?
Sample garbage collection log file can be found here.
c) Where Are GC Logs Used?
Garbage collection logs are used to study the application’s GC and memory performance. It’s used to optimize the GC pause times, it’s used to identify optimal memory size for your application, it’s also used to troubleshoot memory-related problems.
d) How to Generate a GC Log?
-XX:+PrintGCDetails or Xlog:gc*
-Xloggc:gclog.log or -Xlog:gc:gclog.log
Other Options ::
-XX:+DisableExplicitGC
-XX:+PrintGCDetails
-XX:+PrintGCApplicationStoppedTime
-XX:+PrintGCApplicationConcurrentTime
-XX:+PrintGCDateStamps
-Xloggc:gclog.log
-XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=5
-XX:GCLogFileSize=2000k
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Debu Paul ("Techtalk Debu")
15 мар 2023
