RE: Interrupt fencing on Sun

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?

 

Thanks

Riyaj Shamsudeen 

 

________________________________

From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of fairlie rego
Sent: Monday, January 21, 2008 4:34 AM
To: Oracle-L
Subject: Interrupt fencing on Sun

 

All,

 

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

 

Thanks much

Fairlie

 

Fairlie Rego
Senior Oracle Consultant

http://el-caro.blogspot.com/

M: +61 402 792 405

 

  

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