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Clustered systems provide reliability, scalability, and availability to critical production services. Redhat cluster suite can be used in many configurations in order to provide high availability, scalability, load balancing, file sharing, high performance.
A cluster is two or more computers (called nodes or members) that work together to perform a task. There are four major types of clusters:
- High availability
- Load balancing
- High performance
You need to have two or more NICs on your server and multiple distribution switches on network in order to have a redundant network connection for your server. Depending on the operating system your server is running, different configurations (and names) are used. There are usualy two possible schemes to do this, one using load balancing method, and the other using fail-over option.
In the following lines you can find both redhat and solaris configuration examples to implement this.
This document is a summary or outline of Sun's document: Tuning Garbage collection with the 1.4.2 Hotspot JVM located here: http://java.sun.com/docs/hotspot/gc1.4.2/
- For many applications garbage collection performance is not significant
- Default collector should be first choice
ok, you've just got your new dedicated server running plesk, and you're ready to start making changes to boost your server's performance a little bit. Here is a quick (but not dirty) quide to do this:
- enable output compression
- increase number of apache processes
- find out possible slow sql queries