The Pith of Performance

Little's law appears in various guises in performance analysis. It was known to Agner Erlang (the father of queueing theory) in 1909 to...

As companies embrace continuous integration (CI) and fast release cycles, a serious problem has emerged in the development pipeline: Conven...

An interesting story appeared last weekend about a popular NYC restaurant realizing that, although the number of customers they served on a...

The Poisson cumulative distribution function (CDF) \begin{equation} F(α,n) = \sum_{k=0}^n \dfrac{α^k}{k!} \; e^{-α} \label{eqn:pcdf} \end{...

In my Perl PDQ book there is a chapter, entitled Linux Load Average , where I dissect how the load average metric (or metrics, since there ...

Whether or not computer system performance and capacity are related is a question that comes up from time to time, especially from those w...

The usual route for importing data from spreadsheet applications like Excel or OpenOffice into R involves first exporting the data in CSV...