Messages in this thread | | | Date | Sun, 15 Aug 2004 12:36:25 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: page fault fastpath: Increasing SMP scalability by introducing pte |
| |
On Sun, 15 Aug 2004, Manfred Spraul wrote:
> Very odd. Why do you see a problem with the page_table_lock but no > problem from the mmap semaphore?
I will have a look at that...
> The page fault codepath acquires both. > How often is the page table lock acquired per page fault? Just once or > multiple spin_lock calls per page fault? Is the problem contention or > cache line trashing?
The page table lock seems to be acquired at least 2 times and up to 5 times per page fault. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |