Using tags to organize and label all the monitored components in your
environment is a great way to filter server-side services for purposes of
developing component-specific dashboard charts and assigning responsibility
to specific team members or groups. However, managing and applying tagging
within large, dynamic environments can be a real challenge. To address this,
Dynatrace now provides a rule-based approach to tagging that gives you the
flexibility you need to take maximum advantage of Dynatrace Smartscape
topology modeling, auto-detection of processes and services, and built-in
To define a rule-based tag
Go to Settings > Tagging > Automatic tagging. Type a name for the new tag
in the Add custom tag field. Click the Add button to add your new tag.
Select the newly created tag from the list below to edit rules for the tag.
You can define mul... (more)
For a while now I have been writing about how to analyze and optimize Hadoop
jobs beyond just tweaking MapReduce options. The other day I took a look at
some of our Outage Analyzer Hadoop jobs and put words into action.
A simple analysis of the Outage Analyzer jobs with Compuware APM 5.5
identified three hotspots and two potential Hadoop problems in one of our
biggest jobs. It took the responsible developer a couple of hours to fix it
and the result is a 2x improvement overall and a 6x improvement on the Reduce
part of the job. Let's see how we achieved that.
About Outage Analyze... (more)
Traditional Enterprise Database vendors often bring up the lack of
professional monitoring and management tool support for NoSQL solutions.
Their argument is that enterprise applications require sophisticated tuning
and monitoring of the database in order to ensure a performant and smooth
operation. NoSQL Vendors, while arguing that this lack is not enough to favor
RDBMS over their respective solutions, do agree. Several vendors try to
differentiate themselves by providing enterprise level monitoring and
management software, for example, Cassandra, MongoDB, HBase or others. Both ... (more)
Anyone who ever monitored or analyzed an application uses or has used
averages. They are simple to understand and calculate. We tend to ignore just
how wrong the picture is that averages paint of the world. To emphasis the
point let me give you a real-world example outside of the performance space
that I read recently in a newspaper.
The article was explaining that the average salary in a certain region in
Europe was 1900 Euro's (to be clear this would be quite good in that
region!). However when looking closer they found out that the majority,
namely 9 out of 10 people, only ea... (more)
(Note: If you’re interested in WebSphere in a production environment, check
out Michael's upcoming webinar with The Bon-Ton Stores)
Most articles about Garbage Collection ignore the fact that the Sun Hotspot
JVM is not the only game in town. In fact whenever you have to work with
either IBM WebSphere or Oracle WebLogic you will run on a different runtime.
While the concept of Garbage Collection is the same, the implementation is
not and neither are the default settings or how to tune it. This often leads
to unexpected problems when running the first load tests or in the worst case... (more)