Re: [Haskell-cafe] SMP parallelism increasing GC time dramatically

On Wed, Oct 5, 2011 at 2:37 PM, Tom Thorne wrote:

The only problem is that now I am getting random occasional segmentation faults that I was not been getting before, and once got a message saying: Main: schedule: re-entered unsafely Perhaps a 'foreign import unsafe' should be 'safe'? I think this may be something to do with creating a lot of sparks though, since this occurs whether I have the parallel GC on or not.

Unless you (or some library you're using) is doing what the error message says then you should file a GHC bug here: http://hackage.haskell.org/trac/ghc/ -- Johan