CODEWITHSUNDEEP
javatomcatgarbage-collectionjvm
paweloque
paweloque

Reputation: 18864

Tomcat performance degradation with large VM Memory space

Are there any reasons why Tomcat shouldn't run in a JVM with huge VM memory? Do you know any numbers or whatever reasons why it should be advisable to have multiple tomcat instances on the same host instead of one only?

In my opinion this depends on the performance of the GC used. But maybe there are other reasons why tomcat should live in a VM with not too much memory assigned. Are there any reasons why it would be advisable to have multiple tomcat instances on the same host only to reduce memory of the single vms?

Upvotes: 1

Views: 606

Answers (1)

Cornel Creanga
Cornel Creanga

Reputation: 5308

A couple of ideas related to advantage of multiple servers/smaller heap vs a single one/huge heap:

  1. You will have a single point of failure if you use a single machine - you may have Tomcat bugs or some bugs in the deployed applications that requires restarting the JVM, (a several seconds/minutes downtime).
  2. A major gargabe collection will take more time on a huge heap compared with a smaller one.

Upvotes: 2

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