Re: Testing Java vs. CMS/C++ consumer: CMS is much slower, any ideas please?

2012-11-21 Thread sdonovan_uk
Sorry, for CMS, the base version I tested with was V3.4.5 -- and not V3.4.0). S -- View this message in context: http://activemq.2283324.n4.nabble.com/Testing-Java-vs-CMS-C-consumer-CMS-is-much-slower-any-ideas-please-tp4659653p4659654.html Sent from the ActiveMQ - User mailing list archive at

Testing Java vs. CMS/C++ consumer: CMS is much slower, any ideas please?

2012-11-21 Thread sdonovan_uk
I’ve found a significant performance difference using Qs between Java and CMS/C++ consumers. Environment: Windows 2008R2, Opteron @ 2.4GHz (lots of cores) Everything is 64-bit: JDK 1.7.0_02 & C++ compiled with VS.NET 2010 (as Release/x64) ActiveMQ V5.7.0: persistent=false

Variable/dynamic prefetch size

2012-11-05 Thread sdonovan_uk
We're trying to use ActiveMQ as the queue for a distributed set of calculation servers (think many machines with 64-cores on-board). Imagine a single queue with N consumers. The only efficient way to scale is to use consumer prefetch. However. Each of our messages can take between 3ms and minut