Messages in this thread | | | Date | Sat, 28 Feb 2015 11:43:53 -0500 | From | Tejun Heo <> | Subject | Re: [PATCH RFC 0/2] add nproc cgroup subsystem |
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Hello, Tim.
On Sat, Feb 28, 2015 at 08:38:07AM -0800, Tim Hockin wrote: > I know there is not much concern for legacy-system problems, but it is > worth adding this case - there are systems that limit PIDs for other > reasons, eg broken infrastructure that assumes PIDs fit in a short int, > hypothetically. Given such a system, PIDs become precious and limiting > them per job is important. > > My main point being that there are less obvious considerations in play than > just memory usage.
Sure, there are those cases but it'd be unwise to hinge long term decisions on them. It's hard to even argue 16bit pid in legacy code as a significant contributing factor at this point. At any rate, it seems that pid is a global resource which needs to be provisioned for reasonable isolation which is a good reason to consider controlling it via cgroups.
Thanks.
-- tejun
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