[Q21.5] Make GC dependent on % of total memory consed

QUERY Ben> This one I'm not committing quite yet, as it is a (somewhat) Ben> user-visible change. I'm interested in comments. I've been running with it for a couple of days, and subjectively GC is a little less frequent (I had set gc-cons-threshold to 8MB, so that's not damning with faint praise), and is not taking perceptibly more time. My guess is that nobody who's not looking for it will notice. I'd like to release 21.5.23 in a day or so, so I'd like to see a commit if you've worked out the issues with MC_ALLOC satisfactorily. BTW, the log already snuck in to ChangeLog, so make sure you don't dupe it. -- School of Systems and Information Engineering http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Ask not how you can "do" free software business; ask what your business can "do for" free software.