Messages in this thread | | | Date | Fri, 2 Nov 2018 09:03:55 +0100 | From | Michal Hocko <> | Subject | Re: Will the recent memory leak fixes be backported to longterm kernels? |
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On Fri 02-11-18 02:45:42, Dexuan Cui wrote: [...] > I totally agree. I'm now just wondering if there is any temporary workaround, > even if that means we have to run the kernel with some features disabled or > with a suboptimal performance?
One way would be to disable kmem accounting (cgroup.memory=nokmem kernel option). That would reduce the memory isolation because quite a lot of memory will not be accounted for but the primary source of in-flight and hard to reclaim memory will be gone.
Another workaround could be to use force_empty knob we have in v1 and use it when removing a cgroup. We do not have it in cgroup v2 though. The file hasn't been added to v2 because we didn't really have any proper usecase. Working around a bug doesn't sound like a _proper_ usecase but I can imagine workloads that bring a lot of metadata objects that are not really interesting for later use so something like a targeted drop_caches... -- Michal Hocko SUSE Labs
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