cAdvisor has high CPU usage
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
kolla-ansible |
Fix Released
|
Medium
|
Unassigned | ||
Antelope |
Fix Released
|
Undecided
|
Unassigned | ||
Bobcat |
Fix Released
|
Undecided
|
Unassigned | ||
Caracal |
Fix Released
|
Medium
|
Unassigned | ||
Zed |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
The prometheus_cadvisor container has high CPU usage. On various production systems I checked it sits around 13-16% on controllers, averaged over the prometheus 1m scrape interval. When viewed with top we can see it is a bit spikey and can jump over 100%.
There are various bugs about this, but I found https:/
Reducing the housekeeping interval to 60s on a production controller reduced the CPU usage from 13% to 3.5% average. This still seems high, but is more reasonable.
no longer affects: | kolla-ansible/yoga |
Fix proposed to branch: master /review. opendev. org/c/openstack /kolla- ansible/ +/904823
Review: https:/