Re: Providing users with thread type

2019-04-28 Thread Alex Bagehot
Hi Jc, Have you seen at the work of async profiler? It may provide the kind of visibility into VM work that you are after. https://github.com/jvm-profiling-tools/async-profiler As it can be driven from Linux perf events rather than SIGPROF it is able to observe more of the system and therefore prov

Re: hprof format question

2018-11-02 Thread Alex Bagehot
Hi Simon, If you just need a count then would a class histogram suffice? jcmd GC.class_histogram and/or for older jdks jmap -histo[:live] thanks, Alex https://docs.oracle.com/javase/6/docs/technotes/tools/share/jmap.html *-histo[:live]*Prints a histogram of the heap. For each Java class, num