Messages in this thread | | | Date | Tue, 27 Jul 2021 09:21:00 +0200 | From | Christian Brauner <> | Subject | Re: [PATCH v7 01/10] memcg: enable accounting for mnt_cache entries |
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On Tue, Jul 27, 2021 at 08:33:12AM +0300, Vasily Averin wrote: > The kernel allocates ~400 bytes of 'strcut mount' for any new mount. > Creating a new mount namespace clones most of the parent mounts, > and this can be repeated many times. Additionally, each mount allocates > up to PATH_MAX=4096 bytes for mnt->mnt_devname. > > It makes sense to account for these allocations to restrict the host's > memory consumption from inside the memcg-limited container. > > Signed-off-by: Vasily Averin <vvs@virtuozzo.com> > ---
Looks good. Thank you! Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
I wonder how much this increases reported memory consumption when you boot full system containers that run systemd and a bunch of systemd services that each use a separate mount namespace.
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