Published on 13 Dec 2011
In the recent past I have realized that certificates are poorly understood. But accompany us in our everyday life. In the case of IT pros this is very unsettling because they are expected to handle them with ease.
The first and most important concept about certificates is that you need to be thinking about two pieces of information. The certificate is the public part and it always has a matching private key. You may or may not require both for your needs – but continue reading and find out.
Published on 16 Nov 2011
So far, I have written about averages and correcting your data set. In both articles, I have stressed the importance of recognizing outliers and acting according to generally accepted methods. In this article, I will provide the means to identify outliers and their effect on a data set using histograms.
Published on 16 Sep 2011
Since Microsoft has published Windows Server 8 Developer Preview through MSDN at Windows Build I have spent quite some time after dark getting to know this new versions. In the following I have collected some exciting news about the new incarnation of Server Manager.
Published on 12 Sep 2011
For those interested, find attached the slides I presented at NRWconf 2011 in Wuppertal. Mind - they are in German!
Published on 12 Sep 2011
For those interested, find attached the slides I presented at ice:2011 in Lingen. Mind - they are in German! I also discontinue sharing the material via Amazon S3 as propagated in the slides.
Published on 15 Jul 2011
In the first part of this series, I made a point that average values can be easily distorted and I explained when they can be considered to be secure. Now, I am going to show you how to clean up a data set using statistically proven methods.
Published on 30 Jun 2011
In the course of the last months, I have been working on a guide through the process of performance analysis. The poster introduces the individual subsystems and provides a step-by-step guide through important metrics and explains how to read the signs of a bottleneck. Read on for an excerpt from the poster.
Published on 27 Jun 2011
In the first article about the statistical analysis of performance data, I will be dealing with averages. I will explain why it is a bad idea to work with averages of averages (like when storing intermediate results), why relying on averages can be dangerous and what good averages look like.
Published on 27 Jun 2011
As I have announced a few weeks ago, this article kicks off a new series about analyzing performance data. The individual articles will discuss different aspects of correctly working with the collected data. They will provide the necessary mathematical and statistical background for processing and visualizing the data.
Published on 22 Jun 2011
In my series about custom reports for EdgeSight, you have learned about the database schema and the overall layout of a query against it as well as how the query is embedded in a report that can be displayed through the EdgeSight user interface. In all articles I have mentioned several times that reports are expressed in RDL – the report definition language which is based on the Extensible Markus Language (XML). In this posting, I’d like to take a closer look at a RDL file and provide some insight how a report is structured and what those tags mean.