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

sacha:

Hi.

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On Mon, 9 Aug 2010 09:44:00 +0200 "JG" == Jean-Marie Gaillourdet 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