Native Memory Tracking in 7u40 – Marcus Hirt

Since we don’t have any nice NMT (Native Memory Tracking) MBean in HotSpot (yet), and therefore not in the JMC console, I thought I’d show how it can be done using command line arguments and JCMD. Please note that you’ll get a 5-10% performance hit if you enable this. Step 1 – Enabling NMT This is done by using the following command line: -XX:NativeMemoryTracking=[off|summary|detail] Where the dif

[kimutansk]

OffHeapは見た感じPooled/Internal/Unknownですかね。候補となりそうなのは。あとは実際試してみるしかありませんか。