Archive for the Category: JMS

Windows and UHD 4K Resolution

October 7, 2019 Roger Lacroix

Another interesting problem/issue that I’ve come across while installing software on my new ASUS ZenBook Pro laptop was that some older 32-bit applications don’t show the images, toolbar icons, etc. correctly. The applications are not “DPI Aware” but for Windows 10, it defaults to applications being “DPI Aware”. Hence, if you can upgrade to a […]

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2 New IBM MQ RFEs related to com.ibm.mq.jmqi.defaultMaxMsgSize

September 20, 2019 Roger Lacroix

Please review and vote for these RFEs if you think they are a good idea. The links below will take you directly to the RFE. RFE #1: Document com.ibm.mq.jmqi.defaultMaxMsgSize JVM environment variable URL to review the RFE and Vote for it if you like: http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=136680 RFE #2: Add & Document com.ibm.mq.jmqi.defaultMaxMsgSize for .NET Framework URL […]

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JMS and Java Client Mode Performance Issues for MQ Get API Calls

August 15, 2019 Roger Lacroix

I’ve wasted far, far too much of my time inspecting what is going on with the auto-resizing of the get buffer for the internal JMQI and MQI components for MQ classes for JMS, MQ classes for Java and MQ classes for .NET. A strange entry in one of the MQ Auditor audit files got my […]

Also posted in IBM i (OS/400), IBM MQ, Java, Linux, macOS (Mac OS X), Programming, Unix, Windows, z/OS Comments Off on JMS and Java Client Mode Performance Issues for MQ Get API Calls

Pub/Sub Java/JMS MQ MQGet API Issue

August 9, 2019 Roger Lacroix

Not surprisingly, when I tested: Subscribing to a topic with JMS Subscribing to a topic with Java (non-JMS) They both showed that the internal JMQI routine was starting with a MQGet buffer size of 4KB and auto-adjusting the size of the buffer as needed (all behind the scenes). Hence, when I used MQ Auditor, I […]

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How to Improve Your Java/JMS MQ Tuning Cred.

August 8, 2019 Roger Lacroix

Here’s my version of a cheap Info-Commercial: Do you want to impress your colleagues? Do you want to impress your boss, so that you can receive a big fat bonus? Call today and we’ll show you how to impress the MQAdmins in your company! And if you call within the next 5 minutes, we’ll even […]

Also posted in IBM i (OS/400), IBM MQ, Java, Linux, macOS (Mac OS X), Programming, Unix, Windows, z/OS Comments Off on How to Improve Your Java/JMS MQ Tuning Cred.

Tuning JMS Programs for Optimum MQ Get API Calls Performance

August 2, 2019 Roger Lacroix

On Wednesday, I decided to do some testing of some simple (1) MQ for JMS, (2) MQ for Java and (3) procedure language (i.e. amqsbcg) programs to show that using the JVM environment variable of com.ibm.mq.jmqi.defaultMaxMsgSize with an appropriate size could make a JMS application 10 to 15% faster because there would not be any […]

Also posted in IBM i (OS/400), IBM MQ, Java, Linux, macOS (Mac OS X), Programming, Unix, Windows, z/OS Comments Off on Tuning JMS Programs for Optimum MQ Get API Calls Performance

MQ JMS Double Get API Calls

July 25, 2019 Roger Lacroix

Tuning applications is always a good thing. 🙂 Colin Paice has reminded me of the MQ JMS default value for an MQGET buffer size is 4KB in his blog posting here. IBM’s default value of 4KB is far too low to be useful. Having such a low value causes excessive number of MQ JMS Get […]

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RFE – IBM MQ support for AdoptOpenJDK

June 19, 2019 Roger Lacroix

Please review and vote for this RFE if you think it’s a good idea. The link below will take you directly there. Headline: Add support for AdoptOpenJDK in IBM MQ URL to review the RFE and Vote for it if you like: http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=133991 Description: Currently, IBM MQ supports 2 JDKs/JREs: IBM and Oracle. It would […]

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IBM MQ macOS toolkit for developers

February 7, 2019 Roger Lacroix

IBM releases IBM MQ macOS toolkit for developers. I’m shocked and wildly surprised that IBM did this. https://developer.ibm.com/messaging/2019/02/05/ibm-mq-macos-toolkit-for-developers/ This toolkit provides the ability to develop and interact directly with MQ from your Mac, for developers using the language interfaces; such as C, C++, COBOL, GoLang, and Node.js; which are built on the platform-native C library […]

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Static Analysis of Java Code

December 10, 2018 Roger Lacroix

A few weeks ago, I was reading Java Magazine and in the current issue, it was reviewing the results of a Java Developer survey. One of the questions in the survey was “Which static quality tools do you use?”. I guess I’m part of the 36% of the people (results of the survey) who don’t […]

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