Solr uses the MMap Directory by default. What you see is surely a filesystem cache. Once a file is accessed, it's memory mapped. Restarting solr won't reset it.
On unix, you may reset this cache with echo 3 > /proc/sys/vm/drop_caches Franck Brisbart Le mercredi 13 novembre 2013 à 11:58 +0000, Jacky.J.Wang (mis.cnsh04.Newegg) 41361 a écrit : > > > Dear lucene > > > > In order to test the solr search performance ，I closed all the cache > solr > > > > insert into the 10 million data，and find the first search very > slowly（700ms），and the secondary search very quick（20ms），I am > sure no solr cache。 > > This problem bothering me for a month， > > > > Tracing the source code found > > > > 说明: 说明: cid:image001.png@01CED80C.EF49C740 > > Fisrt invoke readVIntBlock method always very slowly ,and secondary > invoke readVIntBlock method is very quick, I don't know what reason is > this > > > > Eagerly awaiting your reply, thanks very much!!! > > > > > >
