Solr 1.4 has a cache implementation that's lockless for gets, and faster for gets. There's a new faceting implementation as well.
-Yonik http://www.lucidimagination.com On Mon, Jun 15, 2009 at 2:39 PM, CameronL<cameron.develo...@gmail.com> wrote: > > I've searched through the forums and seen a few similar problems to this, but > nothing that seemed to help much. > > We're running Solr 1.3 on Tomcat 6.0.16 and Java 6. We've been having > performance problems with our search, causing long query times under normal > traffic. We've taken a thread dump and have seen many threads locked or > waiting for LRUCache (see below). Our cache values are as follows: > > <filterCache class="solr.LRUCache" size="20000" initialSize="10000" > autowarmCount="10000"/> > <queryResultCache class="solr.LRUCache" size="20000" initialSize="10000" > autowarmCount="5000"/> > <documentCache class="solr.LRUCache" size="25000" initialSize="10000" > autowarmCount="0"/> > > > "http-8983-99" daemon prio=10 tid=0x0000002beb3f5800 nid=0x2fb9 waiting for > monitor entry [0x0000000047ea5000..0x0000000047ea6c30] > java.lang.Thread.State: BLOCKED (on object monitor) > at org.apache.solr.search.LRUCache.get(LRUCache.java:130) > - waiting to lock <0x0000002a9fb94be8> (a > org.apache.solr.search.LRUCache$1) > at > org.apache.solr.search.SolrIndexSearcher.getPositiveDocSet(SolrIndexSearcher.java:605) > at > org.apache.solr.search.SolrIndexSearcher.numDocs(SolrIndexSearcher.java:1556) > at > org.apache.solr.request.SimpleFacets.getFacetTermEnumCounts(SimpleFacets.java:377) > at > org.apache.solr.request.SimpleFacets.getTermCounts(SimpleFacets.java:156) > at > org.apache.solr.request.SimpleFacets.getFacetFieldCounts(SimpleFacets.java:182) > at > org.apache.solr.request.SimpleFacets.getFacetCounts(SimpleFacets.java:96) > at > org.apache.solr.handler.component.FacetComponent.process(FacetComponent.java:70) > at > org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:169) > at > org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) > at org.apache.solr.core.SolrCore.execute(SolrCore.java:1204) > at > org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:303) > at > org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:232) > "http-8983-83" daemon prio=10 tid=0x0000002bead1a000 nid=0x2f76 waiting for > monitor entry [0x0000000046e95000..0x0000000046e96c30] > java.lang.Thread.State: BLOCKED (on object monitor) > at org.apache.solr.search.LRUCache.get(LRUCache.java:130) > - locked <0x0000002a9fb94be8> (a org.apache.solr.search.LRUCache$1) > at > org.apache.solr.search.SolrIndexSearcher.getPositiveDocSet(SolrIndexSearcher.java:605) > at > org.apache.solr.search.SolrIndexSearcher.numDocs(SolrIndexSearcher.java:1556) > at > org.apache.solr.request.SimpleFacets.getFacetTermEnumCounts(SimpleFacets.java:377) > at > org.apache.solr.request.SimpleFacets.getTermCounts(SimpleFacets.java:156) > at > org.apache.solr.request.SimpleFacets.getFacetFieldCounts(SimpleFacets.java:182) > at > org.apache.solr.request.SimpleFacets.getFacetCounts(SimpleFacets.java:96) > at > org.apache.solr.handler.component.FacetComponent.process(FacetComponent.java:70) > at > org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:169) > at > org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) > at org.apache.solr.core.SolrCore.execute(SolrCore.java:1204) > at > org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:303) > at > org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:232) > > Has anyone else experienced this or does anyone have an idea of why this > might be happening? > -- > View this message in context: > http://www.nabble.com/LRUCache-causing-locked-threads-tp24040421p24040421.html > Sent from the Solr - User mailing list archive at Nabble.com. > >
