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 ‘ Guerrilla capacity planning ’
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...
Reporting Standard Errors for USL Coefficients
In a Guerrilla Group discussion on Oct 20, 6:41 am, Baron Schwartz wrote:....BS> Using gnuplot against the dataset I gave, I get BS> sigma 0.0207163 +/- 0.001323 (6.385%) BS> kappa 0.000861226 +/- 5.414e-05 (6.287%) The Gnuplot output ...
Gone Guerrill_ R on Our Data
Here's a summary of some things we learnt about applying R to computer performance and capacity planning data in the GDAT Class last week. Neural nets pkg nnet applied to CPU performance data in the Ripley and Venables book (see Section 8.10). How to...
Go Guerrill… R on Your Data in August
Only one month to go! Register now for the Guerrilla Data Analysis Techniques (GDAT) class to be held during the week of August 9-13, 2010. The focus will be on using R and the PDQ-R for computer performance analysis and capacity planning.(Click on t...
Go Guerrill-R on Your Data in August
Guerrill-R, get it? Register now for the Guerrilla Data Analysis Techniques (GDAT) class to be held during the week of August 9-13, 2010. The focus will be on using R and the PDQ-R for computer performance analysis and capacity planning.(Click on the...
Emulating Internet Traffic in Load Tests
One of the recurring questions in the GCaP class last week was: How can we make web-application load tests more representative of real Internet traffic? The sticking point is that conventional load-test simulators like LoadRunner, JMeter, and httperf, ...
August Guerrilla Class: Using R for Performance Analysis
Registrations are still open for the Guerrilla Data Analysis Techniques (GDAT) class being held August 10-14, 2009. The focus will be on using R and the new release of PDQ-R for performance analysis and capacity planning.All Guerrilla classes are hel...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).