I finally got around to completing item 5 on my 2011 list concerning electrical power consumed by a magnetic HDDs. The semi-empirical statement is:Power ∝ Nplatters × Ω2.8 × Dplatter4.6 . . . (1)where Nplatters is the number of...
Posts Tagged ‘ GCaP ’
Visual Illusions: Google vs Facebook vs Yahoo
The ability to visualize data has been a great boon to Cap and Perf that has been enabled by the advent of graphical computer tools. The power derives from the way graphical displays provide an efficient impedance match to the visual system in our brai...
May 2011 Guerrilla Classes: Light Bulb Moments
It's impossible to know what will constitute a light bulb moment for someone else. In the recent Guerrilla classes (GBoot and GCaP), we seemed to be having many more than our usual quota of such moments. So much so, that I decided to keep a list. The f...
How to Recover the Missing X(1) for the USL Scalability Model
When it comes to assessing application scalability, controlled measurements of the type that can be obtained with tools like Grinder or LoadRunner, are very useful because they provide a direct measurement of the throughput, X(N), as a function of the...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
