On Sun, Nov 28, 2010 at 06:51:45PM -0500, Ted Unangst wrote: > What follows is a somewhat older mail I had forgotten about. It's > suddenly become more interesting to be because I was playing around with > jruby which requires a big heap size. It pisses me off to own a 3GB > laptop and only be able to use 1GB of that memory. > > This does 2.5 things. > > 1. If uvm_mmap fails to find memory in the normal mmap area, go back > again and look for memory somewhere else (brk). We only do this after > failure, to preserve the brk space as long as possible. > > 2. Distinguish the two meanings of MAXDSIZ. Use BRKSIZ in more places (I > think this technically fixes a bug on vax) and add it to i386. > > 2.5. Up i386 MAXDSIZ to 2G. > > End effect: You can fsck a much larger filesystem now. This doesn't > change memory layout or allocation policy for any existing program, but > will let you throw more memory at programs that don't currently run.
Or probably allows one to build debug-enabled monsters like firefox^Wmozilla or webkit on i386.. which currently ld fails to link due to object sizes. if so, i'd welcome that. Landry
