change v2..v1: 1. add sample output. Signed-off-by: Ying Han <yinghan@xxxxxxxxxx> --- Documentation/cgroups/memory.txt | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+), 0 deletions(-) diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 2d7e527..0b1a1ce 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt @@ -71,6 +71,7 @@ Brief summary of control files. memory.move_charge_at_immigrate # set/show controls of moving charges memory.oom_control # set/show oom controls. memory.async_control # set control for asynchronous memory reclaim + memory.numa_stat # show the number of memory usage per numa node 1. History @@ -477,6 +478,23 @@ value for efficient access. (Of course, when necessary, it's synchronized.) If you want to know more exact memory usage, you should use RSS+CACHE(+SWAP) value in memory.stat(see 5.2). +5.6 numa_stat + +This is similar to numa_maps but per-memcg basis. This is useful to add visibility +of numa locality information in memcg since the pages are allowed to be allocated +at any physical node. One of the usecase is evaluating application performance by +combining this information with the cpu allocation to the application. + +We export "total", "file", "anon" and "unevictable" pages per-node for each memcg. +The format ouput of the memory.numa_stat: + +total=<total pages> N0=<node 0 pages> N1=<node 1 pages> ... +file=<total file pages> N0=<node 0 pages> N1=<node 1 pages> ... +anon=<total anon pages> N0=<node 0 pages> N1=<node 1 pages> ... +unevictable=<total anon pages> N0=<node 0 pages> N1=<node 1 pages> ... + +And we have total = file + anon + unevictable. + 6. Hierarchy support The memory controller supports a deep hierarchy and hierarchical accounting. -- 1.7.3.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx 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>