On Wed, Jan 15, 2003 at 02:58:02AM -0800, William Lee Irwin III wrote:

Minor extrapolation: aside from potential explosions in very unusual
corner cases, with these hacks/workarounds 64GB NUMA-Q should boot and
run (slowly) with an approximate LowTotal of 173296 kB. The main obstacle
is our setup here would require an additional NR_CPUS > BITS_PER_LONG
patch, and there isn't much local interest in even seeing whether or how
poorly it would run without working patches (e.g. hugh's MMUPAGE_SIZE that
I'm fwd. porting) to do something about runaway mem_map lowmem consumption.

I was only 3MB off wrt. mainline's 64GB LowTotal, not bad at all:

HighTotal:    65134592 kB
HighFree:     65116864 kB
LowTotal:       176076 kB
LowFree:        144180 kB

Turns out NR_CPUS > BITS_PER_LONG was avoided. I'll dig up whatever else
I can here. AIM7 with 10000 tasks and various other things were runnable
on 48GB, but I still need to straighten various fragmentation things out
before benching produces meaningful numbers instead of runs vs. doesn't.


-- wli
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org">aart@kvack.org</a>