Bug ID 697878: High crypto request completion time under some workload patterns

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP APM, GTM, LTM, vCMP(all modules)

Known Affected Versions:
12.1.2

Fixed In:
12.1.3

Opened: Dec 06, 2017

Severity: 2-Critical

Symptoms

The tmctl tmm/crypto table shows heavily loaded bulk crypto queues backed up into associated waiting queue. The crypto requests continue to complete, but are significantly delayed.

Impact

Crypto requests can be delayed as long as 1.5 seconds.

Conditions

High crypto usage often in conjunction with high compression usage.

Workaround

Disable hardware crypto by setting the "crypto.hwacceleration" DB key to "disable": tmsh modify sys db crypto.hwacceleration value disable

Fix Information

Improve accelerated crypto poll-timing calculation.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips