There is little help we get from userspace, and i'm not sure we want to
add scheduler overhead for this single benchmark - when something like a
_tiny_ bit of NUMAlib use within the OpenMP library would probably solve
things equally well!
There's has been a general problem with sched domains and it trying to
meet two goals: "1) spread things around evenly within a domain and
balance across domains infrequently", and "2) load up cores before
loading up siblings, even at the expense of violating 1)".
We've had trouble getting both 1) and 2) implemented correctly in
the past. If this patch gets us closer to that nirvana, it will be
valuable regardless of the benchmark it also happens to be improving.
Regardless, I agree it will need good testing, and we may need to
pick the wheat from the chaff.
Rick
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
