>From: Divacky Roman <[EMAIL PROTECTED]> >On Thu, Dec 08, 2005 at 05:06:16PM -0800, Steve Kargl wrote: >> Anyone have any insight into fixing gcc to make better >> use of system memory on systems with more than 4 GB. >> It appears that libiberty/physmem.c tries to use sysctl() >> to determine the amount of physical memory in a system. >> >> { /* This works on *bsd and darwin. */ >> unsigned int physmem; >> size_t len = sizeof physmem; >> static int mib[2] = { CTL_HW, HW_PHYSMEM }; >> >> if (sysctl (mib, ARRAY_SIZE (mib), &physmem, &len, NULL, 0) == 0 >> && len == sizeof (physmem)) >> return (double) physmem; >> } >> >> This works if you have less than 4GB because of the unsigned >> int physmem. I have 12 GB, which of course, when expanded >> to the number of bytes doesn't fit into a unsigned int physmem.
>> In particular, ggc-min-heapsize=4096 is ridiculously small for a >> system with 12 GB of memory. > >the code works here (512M of memory)... dont know about the ifdefs its >surrounded by.. I guess you've confused M and G :-) The point is that it breaks with over 4G of memory. -SB _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"