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Oracle Linux, VM: After Patching To UEK2 Kernel 2.6.39-400.250.6.el5uek Transfers Over InfiniBand (IB) Stall (Doc ID 2167471.1)

Last updated on AUGUST 04, 2018

Applies to:

Linux OS - Version Oracle Linux 5.0 to Oracle Linux 5.11 with Unbreakable Enterprise Kernel [2.6.39] [Release OL5 to OL5U11]
Information in this document applies to any platform.

Symptoms

After patching, customer is facing performance degradation issues using scp(1).

Changes

 Prior to patching, GRO was off. After patching Ethernet network card had Generic Receive Offload (GRO) option enabled.

Cause

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