It is supposed to generate a new log file every minute. But actually I found if there is not any new logging event, then it does not generate a new file in the format of "xxx.2010-03-16-xx-xx". Such timestamped file is only generated if there is any new logging event. For example, if there is no event from 12:00 to 12:15 then no log files created. But at 12:16 if a new logging event occurs, then it created a new log file created. Is this correct ?