Thread (19 messages) 19 messages, 3 authors, 2013-08-09

Re: [PATCH 2/3] memcg: Limit the number of events registered on oom_control

From: Tejun Heo <tj@kernel.org>
Date: 2013-08-07 14:01:10
Also in: cgroups, lkml

On Wed, Aug 07, 2013 at 03:57:34PM +0200, Michal Hocko wrote:
On Wed 07-08-13 09:47:41, Tejun Heo wrote:
quoted
Hello,

On Wed, Aug 07, 2013 at 03:37:46PM +0200, Michal Hocko wrote:
quoted
quoted
It isn't different from listening from epoll, for example.
epoll limits the number of watchers, no?
Not that I know of.  It'll be limited by max open fds but I don't
think there are other limits. 
max_user_watches seems to be a limit (4% of lowmem in maximum).
That's per *user* not per event source.  The problem here is creating
a global (across securit domains) resource shared by all users.

-- 
tejun

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