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
this.typeName= typeName;
			this.name= name;
			this.variableType= variableType;
			this.positionScore= positionScore;
			triggerChars= triggers;
			this.descriptor= descriptor;
		}
		/*
		 * @see Object#toString()
		 */
		public String toString() {
			StringBuffer buffer= new StringBuffer();
			if (typePackage.length() != 0) {
				buffer.append(typePackage);
				buffer.append('.');
			}
			buffer.append(typeName);
			buffer.append(' ');
			buffer.append(name);
			buffer.append(" ("); 
			buffer.append(variableType);
			buffer.append(')');
			return buffer.toString();
		}
		
		String getFQN() {
			return ParameterGuesser.getFQN(typePackage, typeName);
		}
	}
	private static final class VariableCollector extends CompletionRequestorAdapter {