You should not have other processes/container running on the same node. They potentially screw up your os cache making things slow, eg if the other processes also read files etc they can remove things from Solr from the Os cache and then the os cache needs to be filled again.
What performance do you have now and what performance do you expect? For full queries I would try to export daily all the data and offer it as a simple https download/on a object store. Maybe when you process the documents for indexing you can already put them on a object store or similar - so you don’t need Solr at all to export all of the documents. See also Walters message. > Am 01.06.2020 um 17:29 schrieb Tarun Jain <tjai...@yahoo.com.invalid>: > > Hi,I have a SOLR installation in master-slave configuration. The slave is > used only for reads and master for writes. > I wanted to know if there is anything I can do to improve the performance of > the readonly Slave instance? > I am running SOLR 8.5 and Java 14. The JVM has 24GB of ram allocated. Server > has 256 GB of RAM with about 50gb free (rest being used by other services on > the server)The index is 15gb in size with about 2 million documents. > We do a lot of queries where documents are fetched using filter queries and a > few times all 2 million documents are read.My initial idea to speed up SOLR > is that given the amount of memory available, SOLR should be able to keep the > entire index on the heap (I know OS will also cache the disk blocks) > My solrconfig has the following: > <query> <maxBooleanClauses>200000</maxBooleanClauses> <filterCache > class="solr.FastLRUCache" size="512" initialSize="512" autowarmCount="0" /> > <queryResultCache class="solr.LRUCache" size="512" initialSize="512" > autowarmCount="0" /> <documentCache class="solr.LRUCache" size="8192" > initialSize="8192" autowarmCount="0" /> <cache name="perSegFilter" > class="solr.search.LRUCache" size="10" initialSize="0" autowarmCount="10" > regenerator="solr.NoOpRegenerator" /> > <enableLazyFieldLoading>true</enableLazyFieldLoading> > <queryResultWindowSize>20</queryResultWindowSize> > <queryResultMaxDocsCached>200</queryResultMaxDocsCached> > <useColdSearcher>false</useColdSearcher> > <maxWarmingSearchers>2</maxWarmingSearchers> </query> > I have modified the documentCache size to 8192 from 512 but it has not helped > much. > I know this question has probably been asked a few times and I have read > everything I could find out about SOLR cache tuning. I am looking for some > more ideas. > > Any ideas? > Tarun Jain-=-
