Don't forget to tune Solr Server for increased performance. First thing to do is to increase the Xmx value for Solr Server. To do so:
1) In windows -
* Shutdown Solr service
* Open solr.lax under Solr installation directory and modify the default setting -Xmx256m to -Xmx1024m.
* Start service
2) In Unix -
* Stop solr by going to solr installation directory and say:
* Open cfsolr script and modify modify the default setting -Xmx256m to -Xmx1024m.
* Start by running the command: