From: Jeff Dike <jdike@ka...> - 2001-02-01 15:51:39
> Because all the interesting scaling problems come up when there are
> multiple things happening at once. If you're only running one thread
> at a time then spin-locks aren't that interesting.
Thread 1 Thread 2
[ gets unscheduled by host ]
[gets scheduled by host ]
is very close to what happens on a physical SMP box when two processors try to
grab the same lock at the same time. The higher HZ is on the host, the closer
> You're running on a pool of threads for CPU's, which the host kernel
> is going to make all the real scheduling decisions for.
And? What's the problem with that?