On 9/22/2014 6:42 AM, Li Li wrote: > I have an index of about 30 million short strings, the index size is > about 3GB in disk > I have give jvm 5gb memory with default setting in ubuntu 12.04 of sun jdk 7. > When I use 20 theads, it's ok. But If I run 30 threads. After a > while. The jvm is doing nothing but gc.
When your JVM is doing constant GC, your heap isn't big enough to do the job it's being asked to do by the software. Your options are to increase your heap size, or change how your program works so that it needs less heap. Right now, if you have the memory available, simply make your heap larger. I'm not really sure how to reduce heap requirements for a custom Lucene program, although if any of these notes for Solr (which is of course a Lucene program) can be helpful to you, here they are: http://wiki.apache.org/solr/SolrPerformanceProblems#Java_Heap Thanks, Shawn --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
