Bug 86579 [content assist] guessing parameters is very slow
Eclipse : 3.1M5a Guessing the parameter values in JDT has gone very slow. I have noticed this since 3.1M4. My settings are : Java Editor Code Assist Advanced [x] fill argument names [x] guess names When I turn-off 'guess' method completion & filing in input-parameter name is faster. The plugin project has about 150 Java files and depends on about 20 plugins (not a large one). What other data I can provide to debug this help?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/ParameterGuesser.java
* @param codeAssistOffset the offset at which to perform code assist
	 * @param compilationUnit the compilation unit in which code assist is performed
	 */
	public ParameterGuesser(int codeAssistOffset, ICompilationUnit compilationUnit) {
		Assert.isTrue(codeAssistOffset >= 0);
		Assert.isNotNull(compilationUnit);
		
		fCodeAssistOffset= codeAssistOffset;
		fCompilationUnit= compilationUnit;
		
		
		IJavaProject project= fCompilationUnit.getJavaProject();
		String sourceVersion= project == null 
				? JavaCore.getOption(JavaCore.COMPILER_SOURCE)
				: project.getOption(JavaCore.COMPILER_SOURCE, true);
		
		fAllowAutoBoxing= JavaCore.VERSION_1_5.compareTo(sourceVersion) <= 0;
	}
	
	/**
	 * Returns the offset at which code assist is performed.
	 */
	public int getCodeAssistOffset() {
		return fCodeAssistOffset;	
	}
	
	/**
	 * Returns the compilation unit in which code assist is performed.
	 */
	public ICompilationUnit getCompilationUnit() {