| Lod balancing in RAC [message #164257] |
Wed, 22 March 2006 10:48  |
lvilcan
Messages: 1
Registered: March 2006
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Junior Member |
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Hi,
we are running 10g RAC on a 3-node cluster on HP-UX 11.11.
RAC is configured using both client-side and server-side load balancing. Server side load balancing should distribute user sessions based on system load (not based on number of sessions).
Does anybody know how this actually balancing is done ? What "system load" means? Is it the CPU usage, or CPU idle time or run-queue length or average load shown in "top", or a combination of more items ?
Thanks,
Liliana
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| Re: Load balancing in RAC [message #166181 is a reply to message #164257] |
Wed, 05 April 2006 01:03  |
Frank Naude
Messages: 4579
Registered: April 1998
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Senior Member |
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Server side load balancing is based on CPU usage. PMON periodically updates all registered listeners with the node's CPU utilization. The listener then directs connections to the least loaded node.
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