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gsauthof / cgmemtime

cgmemtime measures the high-water RSS+CACHE memory usage of a process and its descendant processes.
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cgroups v2 support #4

Closed voltagex closed 1 year ago

voltagex commented 2 years ago

Could not mkdir /sys/fs/cgroup/memory/cgmemtime: No such file or directory - I'm assuming this means that many years later, this program is no longer compatible with the cgroups implementation in kernel 5.19. What would it take to update it?

gsauthof commented 2 years ago

The last time I checked the Cgroups v2 documentation, 6 years ago, and I gathered that it doesn't provide any high-water usage information, at all.

However, this seems to have change just a few months ago!

See: https://github.com/torvalds/linux/commit/8e20d4b332660a32e842e20c34cfc3b3456bc6dc

memory.peak A read-only single value file which exists on non-root cgroups.

The max memory usage recorded for the cgroup and its descendants since the creation of the cgroup.

So once Kernel 5.19 hits my workstation I'll look into Cgroups v2 and how I can migrate cgmemtime to Cgroups v2.