[Haskell-cafe] Re: Odd parallel haskell observations (some more numbers)

Don Stewart dons at galois.com
Mon Aug 9 13:13:52 EDT 2010

> Hi.
> >>>>> On Mon, 9 Aug 2010 09:44:00 +0200
> >>>>> "JG" == Jean-Marie Gaillourdet <jmg at gaillourdet.net> wrote:
> JG> 
> JG> I am no expert in web server tuning, but I will share my thoughts
> JG> about your approach and expectations nevertheless.
> I would better think about ghc than about web server. I believe, that
> numbers I already provided (especially their deviation) illustrate that
> sometimes ghc runtime perform quite bad. 
> I also found out that it can do better than it does by default, I can
> accept that runtime might be not capable to adjust itself to any taks
> the best way, but then it will be nice to know, for instance, why for
> such I/O that GC settings change performance in times.

I'd consider boiling this down into a small test case and asking Simon
Marlow -- runtime hacker uber-guru -- to help.

-- Don

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