Re: [PATCH] mm: show stats for non-default hugepage sizes in /proc/meminfo

Johannes Weiner
2017-11-13T19:11:13Z

On Mon, Nov 13, 2017 at 06:45:01PM +0000, Roman Gushchin wrote:
> Or, at least, some total counter, e.g. how much memory is consumed
> by hugetlb pages?

I'm not a big fan of the verbose breakdown for every huge page size.
As others have pointed out such detail exists elswhere.

But I do think we should have a summary counter for memory consumed by
hugetlb that lets you know how much is missing from MemTotal. This can
be large parts of overall memory, and right now /proc/meminfo will
give the impression we are leaking those pages.

Maybe a simple summary counter for everything set aside by the hugetlb
subsystem - default and non-default page sizes, whether they're used
or only reserved etc.?

Hugetlb 12345 kB