See this bug report – VISUALVM-637 Solution: start JVisualVM using below command : jvisualvm.exe -J-Dorg.netbeans.profiler.separateConsole=true I’ve checked this (and it works !) at Windows 10 X64 with java version “1.8.0_102”
In general: A profiler is running all the time, so it gives you the complete call stack; at any given point in time. A sampler only takes “snapshots” at distinct point in times. Thing is: when you “profile” everything, then that slows down your JVM significantly; and it creates enormous amounts of data within a … Read more
It’s often problem with event subscriber/listener. Try run console debug:event And check for errors
Indeed, you are right in your assumption about time actually spent compiling the code: it takes milliseconds (which could be seen with –trace-opt flag). Now talking about that LazyCompile. Here is a quotation from Vyacheslav Egorov’s (former v8 dev) blog: If you are using V8’s tick processors keep in mind that LazyCompile: prefix does not … Read more
Disable this switch will fix your problem. Select Run > Edit Configurations. Select your app module in the left pane. Click the Profiling tab, and then check to disable advanced profiling.
Have you tried YourKit? It has almost all of the features you are looking for.
Use massif, which is part of the Valgrind tools. massif-visualizer can help you graph the data or you can just use the ms_print command.
Given that Scala runs on the Java Virtual Machine (JVM), you can use the JVM tools JConsole and VisualVM to profile the application. Alternatively any Java profiler should work (e.g. YourKit, as you’ve already mentioned) VisualVM has been bundled with the JDK since 1.6.0_10 and it is based on the NetBeans profiler. You can capture … Read more
I found out that (at least under Windows) one can easily write small batch files to run VisualVM in combination with specific JVMs, which is important for me, since I have installed the 32bit JDK alongside with the 64bit JDK (I need both, so this is sensible for me). I have created two batch files … Read more
EDIT: Sorry, didn’t realise that the profile call was in a class method. run just tries to exec the string you pass it. If self isn’t bound to anything in the scope of the profiler you are using, you can’t use it in run! Use the runctx method to pass in the local and global … Read more