Cluster Performance

Cluster Performance I have a client who has 2-web server which are clustered. Two questions...

1. What data makes up the statistics or information you would use to be able to monitor p开发者_运维知识库erformance or load?

2. Once you have this data identified, how do you know it is time to add a third server?

Uou... no simple question:

• OS memory and CPU statistics
• JVM heap size, CPU usage, GC frecuency
• Balancer logs, session replication stas, bandwith usage

And so on...

It is time to add a 3 server when 2 are well configured and they can not keep up to the expected QoS.

Regards.