Description of problem:

When creating a new deployment or scaling/refreshing an existing one, deployments take a very long time and may timeout. Symptoms also include pods being stuck in a 'Pending' or 'Terminating' state for a long time and replication controllers not reflecting the current/desired number of pods correctly, for example:

~~~~~~~~~~~~~
$ oc get pods
NAME             READY   STATUS        RESTARTS   AGE
httpd-5-j24x4    0/1     Terminating   0          15m
httpd-8-deploy   0/1     Error         0          12m
httpd-8-rlpzs    1/1     Running       0          12m
httpd-8-sgdcs    1/1     Running       0          5m
$ oc get rc
NAME      DESIRED   CURRENT   READY   AGE
httpd-7   1         1         1       21m
httpd-8   0         0         0       12m
$ oc get dc
NAME    REVISION   DESIRED   CURRENT   TRIGGERED BY
httpd   8          1         0         config,image(httpd:2.4)
~~~~~~~~~~~~~

This appears to be accompanied with slow etcd performance and consistent api errors related to pod listings.

Version-Release number of selected component (if applicable):

OCP 3.11.404


How reproducible:

Consistently


Steps to Reproduce:
1. Create a new deployment or scale/refresh an existing one


Actual results:

Deployments take an excessively long time to process and either remain in an incorrect state or fail.


Expected results:

Deployments would work as expected.