* Kirill A. Shutemov <kir...@shutemov.name> [2009-12-30 17:57:55]:
> This patchset introduces eventfd-based API for notifications in cgroups and
> implements memory notifications on top of it.
>
> It uses statistics in memory controler to track memory usage.
>
> Output of time(1) on building kernel on tmpfs:
>
> Root cgroup before changes:
> make -j2 506.37 user 60.93s system 193% cpu 4:52.77 total
> Non-root cgroup before changes:
> make -j2 507.14 user 62.66s system 193% cpu 4:54.74 total
> Root cgroup after changes (0 thresholds):
> make -j2 507.13 user 62.20s system 193% cpu 4:53.55 total
> Non-root cgroup after changes (0 thresholds):
> make -j2 507.70 user 64.20s system 193% cpu 4:55.70 total
> Root cgroup after changes (1 thresholds, never crossed):
> make -j2 506.97 user 62.20s system 193% cpu 4:53.90 total
> Non-root cgroup after changes (1 thresholds, never crossed):
> make -j2 507.55 user 64.08s system 193% cpu 4:55.63 total
>
> Any comments?
Hi,
I just saw that the notification work for me using the tool you
supplied. One strange thing was that I got notified even though
the amount of data I was using was reducing, so I hit the notification
two ways
+------------+-----------
1G
----> (got notified on increase)
<---- (got notified on decrease)
I am not against the behaviour, but it can be confusing unless
clarified with the event.
--
Balbir
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