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@jerolba

jerolba/MemoryConsumtionSimple.java

Created March 19, 2019 19:54
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MemoryConsumtionSimple.java
MemoryMXBean mbean = ManagementFactory.getMemoryMXBean();
MemoryUsage beforeHeapMemoryUsage = mbean.getHeapMemoryUsage();
Object instance = codeThatCreatesComplexDataStructure();
MemoryUsage afterHeapMemoryUsage = mbean.getHeapMemoryUsage();
long consumed = afterHeapMemoryUsage.getUsed() -
beforeHeapMemoryUsage.getUsed();
System.out.println("Total consumed Memory:" + consumed);
@basavarajsva
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Prints consumed memory in KB's or MB's ??

@jerolba
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jerolba commented Oct 1, 2020

If you go to JDK source code documentation you can see that getUsed() method returns consumed mermory in bytes:

https://github.com/openjdk/jdk/blob/1ce776a29c7a3c989bbbf26d69216a54c3e8b958/src/java.management/share/classes/java/lang/management/MemoryUsage.java#L203

@basavarajsva
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basavarajsva commented Oct 1, 2020 •
edited

Thanks 👍

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