Comments on: Strange tomcat threading behavior

By: Lessons in scaling at Thinking Outloud

Lessons in scaling at Thinking Outloud — Tue, 03 Jun 2008 15:12:13 +0000

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By: steve

steve — Sat, 03 May 2008 02:48:20 +0000

Just for grins did you run JMeter against a single production instance with clustering disabled? We have a layer in front of our Tomcat servers that handles sticky session to bind the user to a tomcat instance. I do have a memcached session manager written for the SunOne Java Webserver for such situations where we can’t do sticky stuff.

By: The Bull

The Bull — Sat, 03 May 2008 00:22:02 +0000

Yea, we have session clustering turned on as well. We made some progress today but still not great.

By: steve

steve — Fri, 02 May 2008 22:43:59 +0000

When you say “cluster” do you mean that the Session clustering mechanism is turned on? We have sort of the same setup only without the session clustering turned on and it seems to work fine under real world loads. Tomcat 6.0.14, Java 1.6.0_04 64-bit and the APR connector.