Background:
We have a SOLR server running on windows (lack of Linux skills in our organization to support linux). We are increasingly using it more and more. However there is certain assumptions made that it is getting slower, and they want to add another slave server. However this will increase the complexity of our environment. We are trying to get some hard data to support the decision.
Specifics
What perfmon counters can I monitor, and what would the ideal values be of these counters to ensure that the performance of SOLR is good enough?
Counters I think are important
- Memory Page faults
- SOLR should take all the available memory, so measuring free memory is not useful
- Large amounts of page faults could indicate that the server has to little RAM for our requirements
- CPU
- I don't think this is ultra important, because as far as I know the CPU will only be used heavy upon indexing
- Disk
- I don't think this is very important because as far as I know the index's is loaded into memory
