Hi Simon, Thank you for explanation. I think I now understand why -H behaves that way.
2011/2/17 Simon Marlow <marlo...@gmail.com>: > Anyway, with -N2 and above I don't recommend using -H, generally I've found > it results in lower performance. -A1m might be good if your CPUs have > larger L2 caches. I have some local patches that implement an option like > -H but which applies to the old generation sizing rather than the nursery, > which tends to work better with -N2 and above. An experiment shows my program benefits from larger -H value, at least with a fixed -A. Also -A256M is much better than -A1M in my case, perhaps because decreasing the number of minor GCs is very important to the performance. -- Takano Akio > > Cheers, > Simon > _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
