On Mon, Jun 6, 2016 at 6:48 PM, Guozhang Wang <wangg...@gmail.com> wrote: > > About using Instrumentation.getObjectSize, yeah we were worried a lot about > its efficiency as well as accuracy when discussing internally, but not a > better solution was proposed. So if people have better ideas, please throw > them here, as it is also the purpose for us to call out such KIP discussion > threads. >
Note that this requires a Java agent to be configured. A few links: https://github.com/apache/spark/blob/b0ce0d13127431fa7cd4c11064762eb0b12e3436/core/src/main/scala/org/apache/spark/util/SizeEstimator.scala https://github.com/apache/cassandra/blob/3dcbe90e02440e6ee534f643c7603d50ca08482b/src/java/org/apache/cassandra/utils/ObjectSizes.java https://github.com/jbellis/jamm http://openjdk.java.net/projects/code-tools/jol/ https://github.com/DimitrisAndreou/memory-measurer OK, maybe that's more than what you wanted. :) Ismael
