No major update since the last version I posted 27/Jul. The patch is rebased onto mmotm-Aug3. This patch set implements a victim node selection logic and some behavior fix in vmscan.c for memcg. The logic calculates 'weight' for each nodes and a victim node will be selected by comparing 'weight' in fair style. The core is how to calculate 'weight' and this patch implements a logic, which make use of recent lotation logic and the amount of file caches and inactive anon pages. I'll be absent in 12/Aug - 17/Aug. I'm sorry if my response is delayed. In this time, I did 'kernel make' test ...as == #!/bin/bash -x cgset -r memory.limit_in_bytes=500M A make -j 4 clean sync sync sync echo 3 > /proc/sys/vm/drop_caches sleep 1 echo 0 > /cgroup/memory/A/memory.vmscan_stat cgexec -g memory:A -g cpuset:A time make -j 8 == On 8cpu, 4-node fake-numa box. (each node has 2cpus.) Under the limit of 500M, 'make' need to scan memory to reclaim. This tests see how vmscan works. When cpuset.memory_spread_page==0. [Before patch] 773.07user 305.45system 4:09.64elapsed 432%CPU (0avgtext+0avgdata 1456576maxresident)k 4397944inputs+5093232outputs (9688major+35689066minor)pagefaults 0swaps scanned_pages_by_limit 3867645 scanned_anon_pages_by_limit 1518266 scanned_file_pages_by_limit 2349379 rotated_pages_by_limit 1502640 rotated_anon_pages_by_limit 1416627 rotated_file_pages_by_limit 86013 freed_pages_by_limit 1005141 freed_anon_pages_by_limit 24577 freed_file_pages_by_limit 980564 elapsed_ns_by_limit 82833866094 [Patched] 773.73user 305.09system 3:51.28elapsed 466%CPU (0avgtext+0avgdata 1458464maxresident)k 4400264inputs+4797056outputs (5578major+35690202minor)pagefaults 0swaps scanned_pages_by_limit 4326462 scanned_anon_pages_by_limit 1310619 scanned_file_pages_by_limit 3015843 rotated_pages_by_limit 1264223 rotated_anon_pages_by_limit 1247180 rotated_file_pages_by_limit 17043 freed_pages_by_limit 1003434 freed_anon_pages_by_limit 20599 freed_file_pages_by_limit 982835 elapsed_ns_by_limit 42495200307 elapsed time for vmscan and the number of page faults are reduced. When cpuset.memory_spread_page==1, in this case, file cache will be spread to the all nodes in round robin. == [Before Patch + cpuset spread=1] 773.23user 309.55system 4:26.83elapsed 405%CPU (0avgtext+0avgdata 1457696maxresident)k 5400928inputs+5105368outputs (17344major+35735886minor)pagefaults 0swaps scanned_pages_by_limit 3731787 scanned_anon_pages_by_limit 1374310 scanned_file_pages_by_limit 2357477 rotated_pages_by_limit 1403160 rotated_anon_pages_by_limit 1293568 rotated_file_pages_by_limit 109592 freed_pages_by_limit 1120828 freed_anon_pages_by_limit 20076 freed_file_pages_by_limit 1100752 elapsed_ns_by_limit 82458981267 [Patched + cpuset spread=1] 773.56user 306.02system 3:52.28elapsed 464%CPU (0avgtext+0avgdata 1458160maxresident)k 4173504inputs+4783688outputs (5971major+35666498minor)pagefaults 0swaps scanned_pages_by_limit 2672392 scanned_anon_pages_by_limit 1140069 scanned_file_pages_by_limit 1532323 rotated_pages_by_limit 1108124 rotated_anon_pages_by_limit 1088982 rotated_file_pages_by_limit 19142 freed_pages_by_limit 975653 freed_anon_pages_by_limit 12578 freed_file_pages_by_limit 963075 elapsed_ns_by_limit 46482588602 elapsed time for vmscan and the number of page faults are reduced. Thanks, -Kame -- 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>