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Michael Peter Christen 2fc8ecee36 ConcurrentLinkedQueue has a VERY long return time on the .size() method. ... See http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ConcurrentLinkedQueue.html and the following test programm: public class QueueLengthTimeTest { public static long countTest(Queue<Integer> q, int c) { long t = System.currentTimeMillis(); for (int i = 0; i < c; i++) { q.add(q.size()); } return System.currentTimeMillis() - t; } public static void main(String[] args) { int c = 1; for (int i = 0; i < 100; i++) { Runtime.getRuntime().gc(); long t1 = countTest(new ArrayBlockingQueue<Integer>(c), c); Runtime.getRuntime().gc(); long t2 = countTest(new LinkedBlockingQueue<Integer>(), c); Runtime.getRuntime().gc(); long t3 = countTest(new ConcurrentLinkedQueue<Integer>(), c); System.out.println("count = " + c + ": ArrayBlockingQueue = " + t1 + ", LinkedBlockingQueue = " + t2 + ", ConcurrentLinkedQueue = " + t3); c = c * 2; } } }		13 years ago
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list	replaced all 'new String' with default encoding (missing) or UTF-8 encoding with a String generation method that uses a pre-defined Charset constant for UTF-8. This avoids a cache-lookup for the Charset object using String hashing of the String 'UTF-8'.	14 years ago
wiki	some last-minute performance hacks	13 years ago
ymark	Removed handling of components objects for URIMetadataRows.	13 years ago
BlogBoard.java	more UTF8 getBytes() performance hacks	14 years ago
BlogBoardComments.java	some last-minute performance hacks	13 years ago
BookmarkDate.java	more UTF8 getBytes() performance hacks	14 years ago
BookmarkHelper.java	memory hacks	13 years ago
BookmarksDB.java	fix for bookmark crash with possible side-effects on crawl start after	13 years ago
DidYouMean.java	fix for concurrency problem and endless loop in /suggest.json	13 years ago
Diff.java	*) renamed classes according to standard Java coding conventions	14 years ago
ListManager.java	Minor correction to prevent useless comma at beginning of string, created from list	13 years ago
MessageBoard.java	more UTF8 getBytes() performance hacks	14 years ago
Translator.java	added Ukrainian translation	13 years ago
URLAnalysis.java	refactoring:	13 years ago
URLLicense.java	ConcurrentLinkedQueue has a VERY long return time on the .size() method.	13 years ago
UserDB.java	refactoring	13 years ago
WorkTables.java	refactoring:	13 years ago