This bug was originally marked as duplicate of bug 221837, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE Dev (Build web-main-11178-on-20130726)
VM: Java HotSpot(TM) 64-Bit Server VM, 23.25-b01, Java(TM) SE Runtime Environment, 1.7.0_25-b15
OS: Mac OS X
pjiricka: Code completion in index.html in Oracle JET demo project.
Maximum slowness yet reported was 6633 ms, average is 6633
Created attachment 137853 [details]
I would say it is duplicate of #212851. There is slow picture drawing.
sun.java2d.SunGraphics2D.drawImage() 18.785427 1,098 ms (18.8%) 50.3 ms 76
The other Code completion is thread is waiting for classloading, that is ok.