Re: [PATCH v2] docs: proc.rst: meminfo: briefly describe gaps in memory accounting
From: Michal Hocko <mhocko@suse.com>
Date: 2021-04-21 06:35:12
Also in:
linux-fsdevel, linux-mm, lkml, netdev
On Tue 20-04-21 20:58:56, Alexey Dobriyan wrote:
On Tue, Apr 20, 2021 at 03:57:07PM +0200, Michal Hocko wrote:quoted
On Tue 20-04-21 14:24:30, Matthew Wilcox wrote:quoted
On Tue, Apr 20, 2021 at 03:13:54PM +0300, Mike Rapoport wrote:quoted
Add a paragraph that explains that it may happen that the counters in /proc/meminfo do not add up to the overall memory usage.... that is, the sum may be lower because memory is allocated for other purposes that is not reported here, right?yes. Many direct page allocator users are not accounted in any of the existing counters.Does virtio_balloon dereserve special mention?
Yes
From inside VM memory borrowing looks like one giant memory leak resulting in support tickets (not that people who file them read internal kernel documentation...)
Even if people do not read that documentation it is really good to have a reference you can send when you are dealing with bug reports. Thanks! -- Michal Hocko SUSE Labs