Messages in this thread | | | Date | Tue, 3 Feb 2015 03:26:28 +0000 | From | Petr Cermak <> | Subject | Re: [PATCH v2 2/2] task_mmu: Add user-space support for resetting mm->hiwater_rss (peak RSS) |
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On Mon, Jan 26, 2015 at 04:00:20PM -0800, David Rientjes wrote: > [...] > This is a result of allowing something external (process B) be able to > clear hwm so that you never knew the value went to 100MB. That's the > definition of a race, I don't know how to explain it any better and making > any connection between clearing PG_referenced and mm->hiwater_rss is a > stretch. This approach just makes mm->hiwater_rss meaningless.
I understand your concern, but I hope you agree that the functionality we are proposing would be very useful for profiling. Therefore, I suggest adding an extra resettable field to /proc/pid/status (e.g. resettable_hiwater_rss) instead. What is your view on this approach?
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