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. lucene version si 4.10.0
I use jmap -histo:live and find so many ConcurrentHashMap$HashEntry. When with 20 threads, not so many ConcurrentHashMap$HashEntry. What's wrong with? 1: 33770946 1080670272 java.util.concurrent.ConcurrentHashMap$HashEntry 2: 33769230 1080615360 org.apache.lucene.util.WeakIdentityMap$IdentityWeakReference 3: 753 248541760 [Ljava.util.concurrent.ConcurrentHashMap$HashEntry; 4: 6046 28941064 [B 5: 856 11564672 [J 6: 178111 5717592 [C 7: 177773 4266552 java.lang.String 8: 81408 2676472 [Ljava.lang.Object; 9: 13028 2586600 [I --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org
