Bug ID 506283: 100% TPS drop when webroot cloud lookup is enabled under stress condition

Last Modified: Oct 01, 2018

Bug Tracker

Affected Product:  See more info
BIG-IP PEM(all modules)

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
11.6.0 HF5

Opened: Feb 12, 2015
Severity: 2-Critical

Symptoms

When Webroot cloud lookup is enabled and the BIG-IP system is under stress load with URLs that cannot be categorized by the local Webroot database managed on the BIG-IP system, the TPS of the data path traffic slows down as it gets throttled.

Impact

The TPS Throughput may be reduced when this condition persists. This only occurs when Webroot cloud lookup enabled. The Webroot cloud lookup features is disabled by default.

Conditions

If Webroot cloud lookup is enabled while there is heavy traffic with URLs that cannot be categorized by the local Webroot database managed on the BIG-IP system.

Workaround

None.

Fix Information

The system now throttles URL cloud lookup requests when PEM detects that the number of URLs that requires cloud lookup exceed TMM limits/thresholds.

Behavior Change