[logback-user] Feature request: elapsed time

This is a request for a new logback feature. Not sure if this is the right place to post it. I'd love to see a new PatternLayout conversion specifier: %elapsed This would show the number of milliseconds elapsed since the last log statement. At the moment, the closest option is %relative, which shows the elapsed milliseconds since the layout was created. I like to log the start and end of different functions so I can see the performance of each. At the moment I have to calculate the elapsed time in every individual function and log it. It would be easier to have logback take care of this for me.