Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP ASM
Known Affected Versions:
11.4.1, 11.5.0
Fixed In:
11.6.0, 11.5.1, 11.5.0 HF1, 11.4.1 HF4
Opened: Feb 10, 2014 Severity: 3-Major
-- CPU usage is higher than normal. -- Top command shows learning_manager.pl used more than 50% CPU from time to time.
The setting might have a significant effect on application performance.
Configure selective cookie 'Explicit Entities Learning'.
You can lower CPI usage by changing 'Explicit Entities Learning' cookies from 'Selective' to 'Never'.
This release reduces the learning manager's resource usage when it processes traffic with cookies and headers, in case there are no learning suggestions for cookies or headers.