On Thu, Feb 10, 2011 at 4:08 PM, Stijn Vanhoorelbeke <stijn.vanhoorelb...@gmail.com> wrote: > Hi, > > I've done some stress testing onto my solr system ( running in the ec2 cloud > ). > From what I've noticed during the tests, the QTime drops to just 1 or 2 ms ( > on a index of ~2 million documents ). > > My first thought pointed me to the different Solr caches; so I've disabled > all of them. Yet QTime stays low. > Then the Lucence internal Field Cache came into sight. This cache is hidden > deep into Lucence and is not configurable trough Solr. > > To cope with this I thought I would lower the memory allocated to Solr - > that way a smaller cache is forced. > But yet QTime stays low.
When stress-testing Solr, I usually flush the OS cache also. This is the command to do it on linux: # sync; echo 3 > /proc/sys/vm/drop_caches didier > > Can Solr be so fast to retrieve queries in just 1/2 ms - even if I only > allocate 100 Mb to Solr? >
