Bug ID 1159569: Persistence cache records may accumulate over time

Last Modified: May 11, 2023

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 17.0.0, 17.0.0.1, 17.0.0.2

Fixed In:
17.1.0

Opened: Sep 21, 2022

Severity: 3-Major

Symptoms

The persistence cache records accumulate over time if the expiration process does not work reliably. The 'persist' memory type grows over time when multiple TMMs are sharing the records.

Impact

Memory pressure eventually impacts servicing of traffic in multiple ways. Aggressive mode sweeper runs and terminates active connections. TMM may restart. Traffic is disrupted while TMM restarts.

Conditions

- Non-cookie, persistence configured. - Multi TMM box - Traffic that activates persistence is occurring.

Workaround

None

Fix Information

Persistence records are now reliably expired at the appropriate time.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips