On Sat, May 9, 2009 at 6:28 AM, Neil Brown <nc...@kent.ac.uk> wrote: > >> properly, the slight variation is actually a good test). What I would >> like to know is are there any plans for GHC to incorporate >> user-definable scheduler? > > What exactly is it that you want from a user-definable scheduler? Do you > want co-operative scheduling in your program, or do you want to be able to > control the thread-grouping and running order in the GHC runtime? More > details of your requirements would help -- I can't quite make out what you > need from your email.
I would like to alter the running order. For example, the router thread should be ran in between every other thread - its the other threads goal in life to send messages so there's probably one ready. Additionally, the older threads should gradually become higher priority (so they run more frequently and/or for longer than new threads). As I acknowledged, this simulation is a poor example, but what this would give me is a bias toward the nodes in the DHT and away from the hundreds of nodes sending join messages that will have high contention and be dropped (there will always be progress, but as with STM there is lots of retrying involved). Thomas _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe