Re: [patch] voluntary-preempt-2.6.8.1-P4

Ingo Molnar
2004-08-19T08:57:19Z

> > > Any comments on the unmap_vmas issue?
> >
> > wli indicated he's working on the pagetable zapping critical section
> > issue - wli?

actually - the unmap_vmas() issue might be different. Could you change
the '32' in this part of mm/memory.c:

# define ZAP_BLOCK_SIZE \
(voluntary_preemption ? (32 * PAGE_SIZE) : __ZAP_BLOCK_SIZE)

to 16? Does that roughly halve the ~180 usec latency?

Ingo