[Cc Roman - the email thread starts http://lkml.kernel.org/r/20181115130646.6de1029eb1f3b8d7276c3543@xxxxxxxxxxxxxxxxxxxx] On Mon 19-11-18 11:30:45, Vladimir Davydov wrote: > On Sun, Nov 18, 2018 at 08:44:14AM +0800, dong wrote: > > First of all,I can see memory leak when I run ‘free -g’ command. > > This doesn't mean there's a leak. The kernel may postpone freeing memory > until there's memory pressure. In particular cgroup objects are not > released until there are objects allocated from the corresponding kmem > caches. Those objects may be inodes or dentries, which are freed lazily. > Looks like restarting a service causes recreation of a memory cgroup and > hence piling up dead cgroups. Try to drop caches. This seems similar to what Roman was looking recently. All the fixes should be merged in the current Linus tree IIRC. -- Michal Hocko SUSE Labs
