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In the Cloud, you have to trust your instruments...

Michael Kopp

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Top Stories by Michael Kopp

Another year and another Cloud Expo in New York. This year I will be giving two different presentations. The first is on Application Performance Monitoring in the Clouds. In this talk I will cover the five top lessons we have learned about performance and cloud applications. The second is about Performance Management in ‘Big Data' Applications. Most articles that I found on performance and Big Data are about the performance options on the Big Data product itself, but tend to be pretty light on the application itself. In this talk I will cover the two sides of BigData (Hadoop MapReduce and NoSQL) and analyze how these new technologies affect the application performance discipline. I am also happy to announce that Edward Capriolo will be co-speaking. Edward supports both Hadoop and Cassandra at m6d (Media6Degrees) is the author of the High Performance Cassanda Cookb... (more)

Why Averages Are Inadequate, and Percentiles Are Great

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)

Eating Our Own Dog Food – 2x Faster Hadoop MapReduce Jobs

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)

Why Perfomance Management Is Easier in Public than On-Premise Clouds

Performance is one of the major concerns in the cloud. But the question should not really be whether or not the cloud performs, but whether the Application in question can and does perform in the cloud. The main problem here is that application performance is either not managed at all or managed incorrectly and therefore this question often remains unanswered. Now granted, performance management in cloud environments is harder than in physical ones, but it can be argued that it is easier in public clouds than in on-premise clouds or even a large virtualized environment. How do I ... (more)

Deep Insight and Collaboration in the Cloud: A Customer Story

Recently, one of our customers, let's call him PointInFact, had a very typical problem. After deploying a new version of its software, some user requests degraded horribly. Requests that should have taken half a second took up to a minute. Interestingly, the PointInFact team runs a multi-tenant SaaS solution in the AWS Cloud and relies heavily on cloud services. This reliance makes User Experience Management and fault domain isolation very challenging. Back Story: Application Running in the AWS Cloud PointInFact runs a SaaS service. Internally this results in a multi-tenant serv... (more)