gistfile1.txt

                    // Look for JVM bug 
                    if (selected==0 && wait>0 && (now-before)<wait/2 && _selector.selectedKeys().size()==0)
                    {
                        if (_jvmBug++>5)  // TODO tune or configure this
                        {
                            // Probably JVM BUG!
                            
                            Iterator iter = _selector.keys().iterator();
                            while(iter.hasNext())
                            {
                                key = (SelectionKey) iter.next();
                                if (key.isValid()&&key.interestOps()==0)
                                {
                                    key.cancel();
                                }
                            }
                            try
                            {
                                Thread.sleep(20);  // tune or configure this
                            }
                            catch (InterruptedException e)
                            {
                                Log.ignore(e);
                            }
                        }