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Oracle Linux: BDA Nodes Experiencing Performance Slowdowns, Network Timeouts and Command Hangs (Doc ID 2582629.1)

Last updated on OCTOBER 31, 2019

Applies to:

Linux OS - Version Oracle Linux 7.5 with Unbreakable Enterprise Kernel [4.1.12] and later
Information in this document applies to any platform.

Symptoms

After a BDA patch update that upgrades Oracle Linux 6.9 64bit with UEK3 to Oracle 7.5 with UEK4, all the cluster nodes experience performance slowdowns and network timeouts or network-related issues, particularly when having a high load of work running any application.

Some of the symptoms are:

The connection between the cluster nodes uses Infiniband network interfaces, the cluster communicates with ZFS over the Infiniband network too.

Changes

 Nodes upgraded from Oracle Linux 6.9 with UEK R3 to Oracle Linux 7.5 with UEK R4 (4.1.12-124.14.1.el7uek.x86_64).

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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