This bug was originally marked as duplicate of bug 187919, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE 7.4 (Build 201310111528)
VM: Java HotSpot(TM) Client VM, 24.45-b08, Java(TM) SE Runtime Environment, 1.7.0_45-b18
OS: Windows 8
Maximum slowness yet reported was 24088 ms, average is 24088
Created attachment 146409 [details]
Fixed in jet-main.
Integrated into 'main-silver', will be available in build *201404080419* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
User: Dusan Balek <email@example.com>
Log: Issue #243379: com.sun.tools.javac.code.Symbol$ParamSymbol.getSimpleName: LowPerformance - fixed.