If it suddenly gets unresponsive, you may have a GC (garbage collector) problem. Can you post your Java options, Java VM version, max heap and so on. Maybe you are doing some strange things.
For us the best GC to use (we have Java 1.5) was the "Parallel New GC" / "The Concurrent Low Pause Collector", here are some of our options that helped solving the problem: -XX:+UseConcMarkSweepGC -XX:+UseParNewGC. You may also read Mark Millers Blog post: http://www.lucidimagination.com/blog/2009/09/19/java-garbage-collection-boot -camp-draft/ Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: Siraj Haider [mailto:si...@jobdiva.com] > Sent: Tuesday, December 22, 2009 11:19 PM > To: java-user@lucene.apache.org > Subject: Lucene going non-responsive under heavy load > > Hello guys, > We have a dilemma on a few of our lucene machines. We have a tomcat > running our servlets for searching and indexing on each of these > machines. Its a live index where documents are being added to index > while online searches are also being served at the same time. Indexing > happens every 5 minutes and if there are new documents added, the index > gets reopend. For most of the times the performance is very good, but > under heavy load of searches, the machine goes non-responsive. We can > still telnet to machine and see that cpu-wise its not bad, but I/O seems > to be a problem. Is there anything we might be doing to cause it or > anything that we can do to avoid it. I know I did not provide a lot of > information about how we are indexing and searching but I will answer > any question anyone might have. > > thanks in advance > -siraj > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
