Exalogic Virtual 220.127.116.11.X: Performance Issues on Dom0 Compute Nodes with "swiotlb buffer is full" Errors In Messages System Logs
(Doc ID 2594953.1)
Last updated on OCTOBER 01, 2019
Applies to:Oracle Exalogic Elastic Cloud Software - Version 18.104.22.168.0 to 22.214.171.124.190716
Oracle Virtual Server x86-64
In Exalogic 126.96.36.199.X Virtual racks, Performance issues (network communication issues, hang, system unresponsive) are seen on Dom0 Compute Nodes and Guest vServers running on Dom0 compute nodes. Below "swiotlb buffer is full" errors are seen in /var/log/messages system logs of affected Dom0 compute nodes at the time of the issue.
Possible increase in system load and network activity in Exalogic rack.
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