On Tue, Feb 22, 2022 at 4:10 AM Vasily Averin <vvs@xxxxxxxxxxxxx> wrote: > > On 22.02.2022 13:23, Hyeonggon Yoo wrote: > > On Tue, Feb 22, 2022 at 12:22:02PM +0300, Vasily Averin wrote: > >> Dear all, > >> > >> I've found that /proc/slabinfo shows inadequate numbers of in-use slab objects. > >> it assumes that all objects stored in cpu caches are always 100% in use. > > >> Is it a bug or perhaps a well-known feature that I missed? > > > > This is not a bug.. > > Thank you for explanation, > I think it would be useful to document this somewhere. (Documnetation? man slabinfo ?) > Also I would like to know is it some (fast) way to get real numbers in userspace ? > crash is too fat for this task. > Do you know perhaps some other userspace utility or may be systemtap/drgn script? > > I'm preparing new set of memcg accounting patches, with reparired tools/cgroup/memcg_slapinfo.py > I can get numbers of accounted resources, but I need to understand how may resources was NOT > accounted to memcg but allocated on host. I expected get these numbers from host's slabinfo but > it does not show correct numbers. > If you are just interested in the stats, you can use SLAB for your experiments.
