The patch titled memcg: add stats to monitor soft_limit reclaim has been added to the -mm tree. Its filename is memcg-add-stats-to-monitor-soft_limit-reclaim.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: memcg: add stats to monitor soft_limit reclaim From: Ying Han <yinghan@xxxxxxxxxx> The stat is added: /dev/cgroup/*/memory.stat soft_steal: - # of pages reclaimed from soft_limit hierarchical reclaim soft_scan: - # of pages scanned from soft_limit hierarchical reclaim total_soft_steal: - # sum of all children's "soft_steal" total_soft_scan: - # sum of all children's "soft_scan" Signed-off-by: Ying Han <yinghan@xxxxxxxxxx> Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Cc: Minchan Kim <minchan.kim@xxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: Mel Gorman <mel@xxxxxxxxx> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Balbir Singh <balbir@xxxxxxxxxx> Acked-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/cgroups/memory.txt | 4 ++++ include/linux/memcontrol.h | 1 - mm/memcontrol.c | 25 +++++++++++++++++++++++++ 3 files changed, 29 insertions(+), 1 deletion(-) diff -puN Documentation/cgroups/memory.txt~memcg-add-stats-to-monitor-soft_limit-reclaim Documentation/cgroups/memory.txt --- a/Documentation/cgroups/memory.txt~memcg-add-stats-to-monitor-soft_limit-reclaim +++ a/Documentation/cgroups/memory.txt @@ -385,6 +385,8 @@ mapped_file - # of bytes of mapped file pgpgin - # of pages paged in (equivalent to # of charging events). pgpgout - # of pages paged out (equivalent to # of uncharging events). swap - # of bytes of swap usage +soft_steal - # of pages reclaimed from global hierarchical reclaim +soft_scan - # of pages scanned from global hierarchical reclaim inactive_anon - # of bytes of anonymous memory and swap cache memory on LRU list. active_anon - # of bytes of anonymous and swap cache memory on active @@ -406,6 +408,8 @@ total_mapped_file - sum of all children' total_pgpgin - sum of all children's "pgpgin" total_pgpgout - sum of all children's "pgpgout" total_swap - sum of all children's "swap" +total_soft_steal - sum of all children's "soft_steal" +total_soft_scan - sum of all children's "soft_scan" total_inactive_anon - sum of all children's "inactive_anon" total_active_anon - sum of all children's "active_anon" total_inactive_file - sum of all children's "inactive_file" diff -puN include/linux/memcontrol.h~memcg-add-stats-to-monitor-soft_limit-reclaim include/linux/memcontrol.h --- a/include/linux/memcontrol.h~memcg-add-stats-to-monitor-soft_limit-reclaim +++ a/include/linux/memcontrol.h @@ -115,7 +115,6 @@ struct zone_reclaim_stat* mem_cgroup_get_reclaim_stat_from_page(struct page *page); extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p); - #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP extern int do_swap_account; #endif diff -puN mm/memcontrol.c~memcg-add-stats-to-monitor-soft_limit-reclaim mm/memcontrol.c --- a/mm/memcontrol.c~memcg-add-stats-to-monitor-soft_limit-reclaim +++ a/mm/memcontrol.c @@ -94,6 +94,10 @@ enum mem_cgroup_events_index { MEM_CGROUP_EVENTS_PGPGIN, /* # of pages paged in */ MEM_CGROUP_EVENTS_PGPGOUT, /* # of pages paged out */ MEM_CGROUP_EVENTS_COUNT, /* # of pages paged in/out */ + MEM_CGROUP_EVENTS_SOFT_STEAL, /* # of pages reclaimed from */ + /* soft reclaim */ + MEM_CGROUP_EVENTS_SOFT_SCAN, /* # of pages scanned from */ + /* soft reclaim */ MEM_CGROUP_EVENTS_NSTATS, }; /* @@ -624,6 +628,16 @@ static void mem_cgroup_charge_statistics preempt_enable(); } +static void mem_cgroup_soft_steal(struct mem_cgroup *mem, int val) +{ + this_cpu_add(mem->stat->events[MEM_CGROUP_EVENTS_SOFT_STEAL], val); +} + +static void mem_cgroup_soft_scan(struct mem_cgroup *mem, int val) +{ + this_cpu_add(mem->stat->events[MEM_CGROUP_EVENTS_SOFT_SCAN], val); +} + static unsigned long mem_cgroup_get_local_zonestat(struct mem_cgroup *mem, enum lru_list idx) { @@ -1491,6 +1505,8 @@ static int mem_cgroup_hierarchical_recla noswap, get_swappiness(victim), zone, &nr_scanned); *total_scanned += nr_scanned; + mem_cgroup_soft_steal(victim, ret); + mem_cgroup_soft_scan(victim, nr_scanned); } else ret = try_to_free_mem_cgroup_pages(victim, gfp_mask, noswap, get_swappiness(victim)); @@ -3326,6 +3342,7 @@ unsigned long mem_cgroup_soft_limit_recl &nr_scanned); nr_reclaimed += reclaimed; *total_scanned += nr_scanned; + spin_lock(&mctz->lock); /* @@ -3783,6 +3800,8 @@ enum { MCS_PGPGIN, MCS_PGPGOUT, MCS_SWAP, + MCS_SOFT_STEAL, + MCS_SOFT_SCAN, MCS_INACTIVE_ANON, MCS_ACTIVE_ANON, MCS_INACTIVE_FILE, @@ -3805,6 +3824,8 @@ struct { {"pgpgin", "total_pgpgin"}, {"pgpgout", "total_pgpgout"}, {"swap", "total_swap"}, + {"soft_steal", "total_soft_steal"}, + {"soft_scan", "total_soft_scan"}, {"inactive_anon", "total_inactive_anon"}, {"active_anon", "total_active_anon"}, {"inactive_file", "total_inactive_file"}, @@ -3833,6 +3854,10 @@ mem_cgroup_get_local_stat(struct mem_cgr val = mem_cgroup_read_stat(mem, MEM_CGROUP_STAT_SWAPOUT); s->stat[MCS_SWAP] += val * PAGE_SIZE; } + val = mem_cgroup_read_events(mem, MEM_CGROUP_EVENTS_SOFT_STEAL); + s->stat[MCS_SOFT_STEAL] += val; + val = mem_cgroup_read_events(mem, MEM_CGROUP_EVENTS_SOFT_SCAN); + s->stat[MCS_SOFT_SCAN] += val; /* per zone stat */ val = mem_cgroup_get_local_zonestat(mem, LRU_INACTIVE_ANON); _ Patches currently in -mm which might be from yinghan@xxxxxxxxxx are memcg-count-the-soft_limit-reclaim-in-global-background-reclaim.patch memcg-add-stats-to-monitor-soft_limit-reclaim.patch add-the-pagefault-count-into-memcg-stats.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html