Bug 58817 UI no longer responsive when sorting search matches
Build 20040413 I searched for references to type: java.lang.System in org.eclipse.jdt.core project. This found over 4000 matches. I attempted to sort them by parent name, and my IDE locked for about 5 minutes to do the work, with no progress indication, no refresh and 100% CPU usage. Clearly something to improve on UI responsiveness front.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/search/JavaSearchResultPage.java
private static final String KEY_GROUPING= "org.eclipse.jdt.search.resultpage.grouping"; 
	private static final String KEY_SORTING= "org.eclipse.jdt.search.resultpage.sorting"; 
	private static final String KEY_FILTERS= "org.eclipse.jdt.search.resultpage.filters"; 
	
	private static final String GROUP_GROUPING= "org.eclipse.jdt.search.resultpage.grouping"; 
	
	private NewSearchViewActionGroup fActionGroup;
	private JavaSearchContentProvider fContentProvider;
	private int fCurrentSortOrder;
	private SortAction fSortByNameAction;
	private SortAction fSortByParentName;
	private SortAction fSortByPathAction;
	
	private GroupAction fGroupTypeAction;