[lkml]   [2004]   [Aug]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: page fault fastpath: Increasing SMP scalability by introducing pte locks?
On Mon, 16 Aug 2004, Ray Bryant wrote:

> Something else to worry about here is mm->rss. Previously, this was updated
> only with the page_table_lock held, so concurrent increments were not a
> problem. rss may need to converted be an atomic_t if you use pte_locks.
> It may be that an approximate value for rss is good enough, but I'm not sure
> how to bound the error that could be introduced by a couple of hundred
> processers handling page faults in parallel and updating rss without locking
> it or making it an atomic_t.

Correct. There are a number of issues that may have to be addressed but
first we need to agree on a general idea how to proceed.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:05    [W:0.136 / U:34.416 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site