Fixed upstream in candlepin-0.9.49.17-1

Verified in Satellite 6.1.11.

I created a script to generate esx data to a json file. This way I could create the required number of entries (1,500 Hypervisors; 45,000 Guests).
https://gist.github.com/JacobCallahan/1c948ca2466aaeb5de395743f1555e19

# python2.7 genvirt.py -h
usage: genvirt.py [-h] hypervisors guests path

positional arguments:
  hypervisors  The number of hypervisors to create.
  guests       The number of guests per hypervisor to create.
  path         The file path to save the output to.

optional arguments:
  -h, --help   show this help message and exit

# python2.7 genvirt.py 500 30 test1.json
# python2.7 genvirt.py 500 30 test2.json
# python2.7 genvirt.py 500 30 test3.json
# ll
-rw-r--r--. 1 root root 1.7M Nov 17 03:31 test1.json
-rw-r--r--. 1 root root 1.7M Nov 17 03:31 test2.json
-rw-r--r--. 1 root root 1.7M Nov 17 03:31 test3.json

# for virt in test1.json test2.json test3.json; do curl -k -X POST --cert /etc/pki/consumer/cert.pem --key /etc/pki/consumer/key.pem https://ibm-x3550m3-07.lab.eng.brq.redhat.com/rhsm/hypervisors -H "Content-Type: application/json" -d @"$virt"; done;

The processes completed successfully, with no interrupts to content host page loading. Average content host page load times after process is 4.8s.

Created attachment 1221453 [details]
verification screenshot

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2016:2804