Typical Failure Scenario A typical failure scenario is JBoss crashing, or getting outofmemory, in this scenario File PM recovers fine (in 3.2.3).
3.2.7 I recently looked at using 3.2.7 because of some fixes to JMS since 3.2.3 (UIL2 leak and some other bits), but 3.2.7 seemed unable to recover the queue contents (something that worked in 3.2.3). So we are currently have been sticking with 3.2.3 using RMIConnectionFactory (which doesn't leak). Reliability Issues Servers these days are very reliable with UPS and reliable O/S (with regular reboots if using Win Servers). Most issues with reliability these days are with software not hardware. Clustered HA file system are becoming more common now with SAN and NAS. JDBC Tuning What JDBC tuning can be done to increase the performance, currently only internal JDBC like hypersonic gives near the same performance. We use BLOB?s ourselves extensively and know that is much slower than local or network disk access. Some Performance Figures of JMS in 4.0.2 Running on 2x3.2Ghz P4 HT Win2003 Server Raid 5 Disk Array We added some performance logging to the sending and receiving of the JMS message and these are the figures:- Message Size around 300-400k. These are external Java Clients running in separate JVM?s on the same machine. Oracle (10g thin driver) running on same machine:- Recv: Min:1ms Average: 7ms Max: 641ms Send: Min:16ms Average: 454ms Max: 4785ms Hypersonic (running in JBoss instance) Recv: Min: 15ms Average: 22ms Max:157ms (initially) Send: Min: 31ms Average: 1745ms Max: 6118ms Then after 1200 msgs Recv: Min: 15ms Average: 168ms, Max:10717ms Send: Min: 31ms Average: 357ms Max: 19450ms Then after 6300 msgs Recv: Min: 15ms Average: 1378ms Max:126595ms Send: Min: 47ms Average: 3041ms Max: 138851ms Then out of memory File PM (3.2.3 version on 4.0.2) After 13,000 msgs:- Recv: Min: 47ms Average: 37ms Max: 172ms Send: Min: 15ms Average: 59ms Max: 235ms View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3880769#3880769 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3880769 ------------------------------------------------------- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20 _______________________________________________ JBoss-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jboss-user
