Re: [PATCH V2] memcg: add documentation for memory.numastat API.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



* Ying Han <yinghan@xxxxxxxxxx> [2011-05-24 00:01:53]:

> 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.
> +

Looks good


Acked-by: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
 

-- 
	Three Cheers,
	Balbir

--
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>


[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]