[Haskell-cafe] SMP parallelism increasing GC time dramatically

[Mikolaj Konarski]

> As it turns out, I ran into a similar issue with a concurrent Gibbs
> sampling implmentation I've been working on. Increasing -H fixed the
> regression, as expected. I'd be happy to provide data if someone was
> interested.

Yes, please. Even if it turns out not a ThreadScope issue, it's still
a valuable test case. I will try reproducing it and report back.
Please use my email address <mikolaj at well-typed.com>
or the ThreadScope Trac.