The wheel has turned full circle and I’m back in MQ land… So here is a a simple Java vuser harness which you can use in LoadRunner to put or get messages from Websphere MQ. This version doesn’t require any JNDI bindings (or access to JMS). Instead it just uses a standard server connection channel [...]
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This is a relatively new example of how to use JMeter with WebSphere MQ. This approach is a clever way of inserting messages into MQ using a JMS sampler (point to point) with a JNDI binding within MQ. I had not heard of this approach before and am sure it will be useful in future, provided [...] Recently I have been trying to determine what the impact of using MQ message persistence is on disk subsystem performance. There is alot of literature from IBM recommending ideal configurations to support MQ persistence, so I won’t turn this into a post that recommends ideal settings. What I did want to achieve though, was to [...] So I spent the best part of a day assisting our sys admin and developer resolve MQ errors that a COBOL client was throwing when opening more than one concurrent connection to a clustered queue manager. Because the architecture had recently changed to a cluster, and my load harness was no longer getting the desired response [...] Once again on the topic of performance testing Business Objects, when executing a benchmark for a web intelligence report with goal being to see how many concurrent users it could support, the following error mesage was being generated in the vuser log: Connection failed. The server has reached the maximum number of simultaneous connections. (Error: RWI [...] When load testing MQ you are no doubt going to need to be able to monitor queue statistics in terms of how many messages have been enqueued and dequeued within a given timeframe. You can use native runmqsc commands to query queues in order to find current queue depths but this is just a snapshot [...] This is another blog in a similar vein to “No LoadRunner, No Problems” where I needed to write a custom test harness for MQ server. IBM kindly provide a complete Java API for getting in to the nitty gritty of MQ messages. Much can be learnt from WebSphere MQ sample code in Java and of [...] |
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