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GC easy – Universal Java GC Log Analyser

GARBAGE COLLECTION LOG ANALYSIS API

In this modern world, Garbage collection logs are still analyzed in a tedious & manual mode. i.e. you have to get hold of your Devops engineer who has access to production servers, then he will mail you the  Continue reading “GARBAGE COLLECTION LOG ANALYSIS API”

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JVM PERFORMANCE ENGINEERING & TROUBLESHOOTING TRAINING

JVM is the most popular programming platform in the world. It empowers many enterprises to run its mission-critical applications. Continue reading “JVM PERFORMANCE ENGINEERING & TROUBLESHOOTING TRAINING”

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JVM MEMORY – LEARN EASILY (VIDEO)

JVM memory has multiple regions, some are known (Young Generation, Old Generation, Metaspace). Some are unknown (Threads, JNI, Socket Buffers,…). You will understand the purpose of each region in JVM memory. Continue reading “JVM MEMORY – LEARN EASILY (VIDEO)”

CMS DEPRECATED. NEXT STEPS?

Popular Concurrent Mark Sweep (CMS) GC algorithm is deprecated in JDK 9. According to JEP-291, this decision has been made to reduce the maintenance burden of GC code base and accelerate new development. Continue reading “CMS DEPRECATED. NEXT STEPS?”

PAINTING GRAPHS IN ABSOLUTE TIMESTAMP FORMAT

In some of the GC logs, timestamps of GC events are printed in relative format i.e.

[0.209s]   .....

Continue reading “PAINTING GRAPHS IN ABSOLUTE TIMESTAMP FORMAT”

ECLIPSE MAT – INCOMING REFERENCES, OUTGOING REFERENCES

Eclipse Memory Analyzer (MAT) is a powerful tool for heap dump analysis. It has several great features to debug memory problems effectively. Continue reading “ECLIPSE MAT – INCOMING REFERENCES, OUTGOING REFERENCES”

Try to avoid -XX:+UseGCLogFileRotation

Developers take advantage of the JVM argument -XX:+UseGCLogFileRotation to rotate GC log files. Continue reading “Try to avoid -XX:+UseGCLogFileRotation”

SHALLOW HEAP, RETAINED HEAP

Eclipse MAT (Memory Analyzer Tool) is a powerful tool to analyze heap dumps. It comes quite handy when you are trying to debug memory related problems. In Eclipse MAT two types of object sizes are reported: Continue reading “SHALLOW HEAP, RETAINED HEAP”

VIRTUAL MACHINE ERROR

Java.lang.VirtualMachineError is thrown when Java virtual machine encounters any internal error or resource limitation which prevents it from functioning. Continue reading “VIRTUAL MACHINE ERROR”

UseStringDeduplication

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HOW TO INVOKE GC LOGS ANALYSIS API THROUGH POSTMAN

 

GCeasy provides powerful REST API to analyze Java GC logs. This API can be used for application monitoring, analyzing Continue reading “HOW TO INVOKE GC LOGS ANALYSIS API THROUGH POSTMAN”

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