RE: Interrupt fencing on Sun
Date: Mon, 21 Jan 2008 11:18:04 -0600
We fenced interrupts also in my prior client, 2 CPUs in a 48 CPU server.
Do you have 128 CPUs per node or 128 CPU for all nodes together? How many CPUs are used when the system is at its peak load?
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of fairlie rego Sent: Monday, January 21, 2008 4:34 AM
Subject: Interrupt fencing on Sun
On a 8 node 10.2.0.3 RAC with 128 cpus Sun and Veritas have recommended that the customer set aside 2 cpus on each node for processing network interrupts exclusively.
This was suggested after a situation where VCS was unable to process cluster heartbeat messages in a timely manner due to Sun attempting to process the network interrupt thread on the same CPU which was running the cluster communication thread.
I would like to know if any other large customers have set aside cpus exclusively to handle network interrupts and if so what percentage of total CPUs
Senior Oracle Consultant
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