Re: [Haskell-cafe] Adding custom events to eventlog

"Janek S." writes:

Dear list,

I'm using ThreadScope to improve performance of my parallel program. It would be very helpful for me if I could place custom things in eventlog (e.g. "now function x begins"). Is this possible?

Yes, it certainly is possible. Have a look at Debug.Trace.traceEvent and traceEventIO. I have found these to be a remarkably powerful tool for understanding parallel performance. Cheers, - Ben