Symptoms
When taking a qkview on a heavily loaded BIG-IP device (with lots of connections) running 12.1.0 or 12.1.1, the qkview utility may take a very long time to complete (30+ minutes) or cause tmm to restart. This is due to a new qkview command that was added to gather a list of recent connections with the tmsh show sys connection command, which has a significant performance impact when run while the BIG-IP is heavily loaded.
Impact
Qkview command can take an exceedingly long time to run (30+ minutes).
Traffic disrupted while tmm restarts.
Conditions
This can occur on the following versions:
- 12.1.0 including 12.1.0 HF1 and 12.1.0 HF2
- 12.1.1 including 12.1.1 HF1
This can occur when the BIG-IP is heavily loaded and while running the qkview command.
Workaround
Do not run the qkview command if the device is heavily loaded.
Fix Information
Removed offending "show sys connection" command from qkview utility.
