Bug ID 1032641: BIG-IQ analytics performance is reduced when receiving high rate of DNS statistics from BIG-IP

Last Modified: Aug 11, 2021

Bug Tracker

Affected Product:  See more info
BIG-IQ AppIQ(all modules)

Known Affected Versions:
7.1.0, 7.1.0.1, 7.1.0.2, 7.1.0.3, 7.1.6, 7.1.6.1, 7.1.7, 7.1.7.1, 7.1.7.2, 7.1.8, 7.1.8.1, 7.1.8.2, 7.1.8.3, 7.1.8.4, 7.1.8.5, 7.1.9, 7.1.9.7, 7.1.9.8, 7.1.9.9, 8.0.0, 8.0.0.1, 8.1.0

Fixed In:
8.1.0.1

Opened: Jul 09, 2021
Severity: 2-Critical

Symptoms

When BIG-IQ receives a large number of DNS statistics from a BIG-IP (From appiqagent at DCD), BIG-IQ logs the following error: 2021-05-26 20:09:20,009 INFO c.f.a.a.r.ReactorPipeline [XNIO-2 task-45] Source buffer high watermark reached (available-capacity: 5905, max-capacity: 65536, usage: 90.99%, please retry later 2021-05-26 20:09:20,009 WARN c.f.a.a.c.RawDataAPIController [XNIO-2 task-45] Sending HTTP response 504 Gateway Timeout with Retry-After : 3434ms

Impact

When the high-water mark level is too high, statistics are lost.

Conditions

One or more BIG-IP devices are configured to send DNS statistics.

Workaround

None

Fix Information

This issue has been resolved and DNS statistics are properly reported.

Behavior Change