On Wed, Oct 04, 2023 at 09:52:28PM +0200, Felip Moll <lipixx@xxxxxxxxx> wrote: > Well, I understand it is a per-process resource as any other field you > can check in /sys/fs/cgroup/../memory.stat. Those fields are machine (owned) resources consumed by processes (e.g. (anon) pages (but this file has a mixture of types of values)). > Can you develop on why you say vsz of one process is not exclusive to > another's vsz? One process can have a vaddrs in range say 1G..2G, that is 1G vsz (and can be much less of rss). Another process can have very same (nominal) range, 1G vsz again. That is 2G of vsz in total but nothing needs to be actually consumed (for backing pages, whose number can further vary depending on possible sharing). > Technically, the sum of all VSZ would give an estimation of how much > memory a set of processes might try to use. I think that's the same > idea of VSZ for a single process but just for a set of processes. > This could be useful to detect memleaks on a program before they > happen when you see a huge VSZ. Ah, now I see where you're coming from. That could be a new field in memory.stat. Regards, Michal
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