On Thu, Jan 29, 2004 at 01:13:28PM +0100, Ketil Malde wrote:
> My aplogies for being unclear! What I really want is the amount of
> memory my application can allocate and excercise lively without
> causing thrashing. On my Linux computer, that amounts more or less to
> the installed, physical RAM, minus a bit, so I'll settle for that. :-)
>
> (After browsing various information, it seems I'm after the minimum of
> physical RAM and getrlimit(RLIMIT_DATA)).
I use the following with ghc. You don't really want to do this in haskell,
since there's no way to set the RTS values from haskell anyways.
#include <Rts.h>
#include <RtsFlags.h>
#include <unistd.h>
void defaultsHook (void) {
RtsFlags.GcFlags.maxStkSize = 8*1000002 / sizeof(W_); /* 8M */
#ifdef _SC_PHYS_PAGES
unsigned long long pagesize = sysconf(_SC_PAGESIZE);
unsigned long long numpages = sysconf(_SC_PHYS_PAGES);
unsigned long long mhs = 2*numpages*pagesize;
RtsFlags.GcFlags.maxHeapSize = 1ULL+mhs/BLOCK_SIZE_W;
#endif
}
--
David Roundy
http://civet.berkeley.edu/droundy/
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