Bug 11272

Summary:	slow context assist on method/field-rich classes
Product:	[Eclipse Project] JDT	Reporter:	Vladimir Grishchenko <vladgri>
Component:	Core	Assignee:	Philipe Mulet <philippe_mulet>
Status:	RESOLVED DUPLICATE	QA Contact:
Severity:	normal
Priority:	P3
Version:	2.0
Target Milestone:	2.0 M4
Hardware:	PC
OS:	Windows 2000
Whiteboard:

Description Vladimir Grishchenko

2002-03-13 11:54:59 EST

I noticed that the time to show a pop-up context assist menu is proportional
to the number of methods/fields (declared and inherited) in a class. While
can be understood, this becomes pretty painful for rich classes (think
Swing). It takes about 6-10 seconds with CPU usage at 100% to display the
box for JDialog, for example, and for a simple class that has 20-30 methods
it's almost instantaneous on a 800 MHz P3 running Win2k and Sun's 1.3.1.
Looks like the performance is not linear, it might also be related to
traversing the hierarchy up.

Comment 1 Vladimir Grishchenko

2002-03-13 11:59:27 EST

More info: the best way to reproduce is to enable auto-activation and press "." 
after a variable.

Comment 2 Erich Gamma

2002-03-19 11:49:27 EST

moving to core for first investigations

Comment 3 Vladimir Grishchenko

2002-03-19 13:05:29 EST

Performance much improved in 20020214, so looks like this bug can be closed...

Comment 4 Philipe Mulet

2002-03-20 04:59:08 EST

Vladimir - which built did you this in originally ?

Comment 5 Vladimir Grishchenko

2002-03-20 11:30:14 EST

20011219

Comment 6 Philipe Mulet

2002-03-20 11:35:09 EST

Ok, makes sense, we did indeed change the method argument name retrieval since 
then to address the perform issue (see bug 6866).

Closing

*** This bug has been marked as a duplicate of 6866 ***