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Scrape CPU latency stats from /proc/schedstat (#1389)

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These are useful as a direct indication of CPU contention and task
scheduler latency.

Handy references:
 - https://github.com/torvalds/linux/blob/master/Documentation/scheduler/sched-stats.txt
 - https://doc.opensuse.org/documentation/leap/tuning/html/book.sle.tuning/cha.tuning.taskscheduler.html

procfs is updated to pull in the enabling change:
https://github.com/prometheus/procfs/pull/186

Signed-off-by: Phil Frost <phil@postmates.com>
This commit is contained in:
Phil Frost 2019-07-10 03:16:24 -04:00 • committed by Ben Kochie
commit f693a71c06
13 changed files with 297 additions and 5 deletions
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CHANGELOG.md
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@ -13,7 +13,7 @@
* [CHANGE] Add `--collector.netdev.device-whitelist`. #1279
* [CHANGE] Refactor mdadm collector #1403
* [FEATURE]
* [FEATURE] Add new schedstat collector #1389
* [ENHANCEMENT]
* [BUGFIX] Renamed label `state` to `name` on `node_systemd_service_restart_total`. #1393