On Sun, 2006-09-24 at 01:28 +0400, Bulat Ziganshin wrote: > Hello Duncan, > > Sunday, September 24, 2006, 12:22:38 AM, you wrote: > > >> after program prints "40 mb allocated" look at Task Manager indication > >> - it shows that two times more memory actually in use. it seems that > >> problem is only with allocating memory buffers whose sizes are powers > >> of 2 or very close - bug shows for bufsize = 4kb, 1mb or 4095, but not > >> not for 4000 or 10^6 > > > The reason for this is that for larger objects ghc has an allocation > > granularity of 4k. That is it always uses a multiple of 4k bytes. > > with 512k blocks it also allocates two times more data than requested.
Oh, sorry I missed that point. Something fishy is going on then. Duncan _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
