java-memory-dump-example

Run command with VM Options

java -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/some/path -server -Xms2048m -Xmx2048m -javaagent:/some/path/apm-agent.jar -Delastic.apm.disable_bootstrap_checks=true -Delastic.apm.service_name=balcode -Delastic.apm.server_urls=https://YOUR_APM_HOST/ -Delastic.apm.environment=production -Delastic.apm.application_packages=com.example.balcode -jar ./build/libs/balcode-0.0.1.jar

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Heap Dump

Visual VM

• https://visualvm.github.io/

Memory Analyzer (MAT)

• https://www.eclipse.org/mat/

Elastic APM

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Native Memory Dump

apt update && apt install gdb binutils -y

jcmd <pid> VM.native_memory detail

pmap -x <pid> | sort -k 3 -n -r | more

vim /proc/<pid>/smaps
gdb -pid <pid>
> dump memory /file/path start end