On Thu, Dec 29, 2005 at 01:20:41PM +0000, Joel Reymont wrote:
Why does it take a fraction of a second for 1 thread to unpickle and several seconds per thread for several threads to do it at the same time? I think this is where the mistery lies.
Have you considered any of this: - too big memory pressure: more memory means more frequent and more expensive GCs, 1000 threads using so much memory means bad cache performance - a deficiency of GHC's thread scheduler - giving too much time one thread steals it from others (Simons, don't get angry at me - I am probably wrong here ;-) Best regards Tomasz -- I am searching for a programmer who is good at least in some of [Haskell, ML, C++, Linux, FreeBSD, math] for work in Warsaw, Poland