|| ||KAMEZAWA Hiroyuki <email@example.com>|
|| ||Andrew Morton <firstname.lastname@example.org>|
|| ||[PATCH][for -mm] per-zone and reclaim enhancements for memory
controller take 3 [0/10] introduction|
|| ||Tue, 27 Nov 2007 11:55:25 +0900|
|| ||"email@example.com" <firstname.lastname@example.org>,
Hi, this is per-zone/reclaim support patch set for memory controller (cgroup).
Major changes from previous one is
-- tested with 2.6.24-rc3-mm1 + ia64/NUMA
-- applied comments.
I did small test on real NUMA machine.
My machine was ia64/8CPU/2Node NUMA. I tried to complile the kernel under 800M
bytes limit with 32 parallel make. (make -j 32)
- 2.6.24-rc3-mm1 (+ scsi fix) .... shows soft lock-up.
before soft lock-up, %sys was almost 100% in several times.
- 2.6.24-rc3-mm1 (+ scsi fix) + this set .... completed succesfully
It seems %iowait dominates the total performance.
(current memory controller has no background reclaim)
Seems this set give us some progress.
(*) I'd like to merge YAMAMOTO-san's background page reclaim for memory
controller before discussing about the number of performance.
Andrew, could you pick these up to -mm ?
Patch series brief description:
[1/10] ... add scan_global_lru() macro (clean up)
[2/10] ... nid/zid helper function for cgroup
[3/10] ... introduce per-zone object for memory controller and add
[4/10] ... calculate mapper_ratio per cgroup (for memory reclaim)
[5/10] ... calculate active/inactive imbalance per cgroup (based on )
[6/10] ... remember reclaim priority in memory controller
[7/10] ... calculate the number of pages to be reclaimed per cgroup
[8/10] ... modifies vmscan.c to isolate global-lru-reclaim and
memory-cgroup-reclaim in obvious manner.
(this patch uses functions defined in [4 - 7])
[9/10] ... implement per-zone-lru for cgroup (based on )
[10/10] ... implement per-zone lru lock for cgroup (based on )
Any comments are welcome.