This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
Lists of classes (when heapdump is loaded) and instances (when a class is selected) are computed in AWT-EventQueue which breaks IDE responsivenes.
List of instances is now created asynchronously in separate thread. Computing list of classes takes no real time and is kept in AWT-EventQueue, actually performance problem was caused by computing HeapSummary which is now computed in separate thread within loading the heap dump. Fixed for M2.
Verified.