On 03/29/2012 03:43 PM, KOSAKI Motohiro wrote:
(3/29/12 2:00 PM), Larry Woodman wrote:
On 03/22/2012 03:30 PM, Christoph Lameter wrote:
On Thu, 22 Mar 2012, Larry Woodman wrote:
Application may manage their locality given a range of nodes and
each of
the x .. x+n nodes has their particular purpose.
So to be clear on this, in that case the intention would be move 3
to 4, 4 to
5 and 5 to 6
to keep the node ordering the same?
Yup. Have a look at do_migrate_pages and the descrition in the
comment by
there by Paul Jackson.
Christoph and others what do you think about this???
for_each_node_mask(s, tmp) {
+
+ /* IFF there is an equal number of source and
+ * destination nodes, maintain relative node distance
+ * even when source and destination nodes overlap.
+ * However, when the node weight is unequal, never move
+ * memory out of any destination nodes */
+ if ((nodes_weight(*from_nodes) !=
nodes_weight(*to_nodes)) &&
+ (node_isset(s, *to_nodes)))
+ continue;
+
d = node_remap(s, *from_nodes, *to_nodes);
if (s == d)
continue;
I'm confused. Could you please explain why you choose nodes_weight()?
On my first impression,
it seems almostly unrelated factor.
nodes_weight() tells us the number of nodes in the cpuset so if you are
migrating
from say 2, 3 &4 to 3, 4 &5 we wont go from 2 to 5 and call it done like
the original
patch did. With this patch we will preserve the migrating of 2, 3 &4 to
3, 4 &5 yet
if we are migrating from 0-7 to 3-4 we wont do this:
Migrating 7 to 4
Migrating 6 to 3
Migrating 5 to 4
Migrating 4 to 3
Migrating 1 to 4
Migrating 3 to 4
Migrating 0 to 3
Migrating 2 to 3
Instead, will do this:
Migrating 7 to 4
Migrating 6 to 3
Migrating 5 to 4
Migrating 1 to 4
Migrating 0 to 3
Migrating 2 to 3
Larry
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign
http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>