Bug ID 496369: VE spanning NUMA domains can result in degraded performance.

Last Modified: Mar 21, 2019

Bug Tracker

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4

Opened: Dec 12, 2014
Severity: 4-Minor
Related AskF5 Article:
K17037

Symptoms

Performance degradation on some VE instances, but not on others.

Impact

Performance is negatively impacted.

Conditions

This occurs on VE instances that are set up for spanning NUMA domains.

Workaround

Ensure the hypervisor disables NUMA spanning on the VE guest. Specifically, restrict the VE instance to a set of cores with direct memory controller attachments. This is typically done via NUMA controls, which vary by hypervisor. For instructions on disabling NUMA spanning, see your hypervisor documentation.

Fix Information

None

Behavior Change