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diff --git a/content/implementation.tex b/content/implementation.tex index 3c77011..16cf7ca 100644 --- a/content/implementation.tex +++ b/content/implementation.tex @@ -165,6 +165,17 @@ In order to turn it into a \gls{dt}, we have made several design decisions and e \item \textbf{\code{HTTPClient}}\\ The \code{HTTPClient} offers the necessary functionality to communicate between the \gls{dt} and the datacenter. We decided to use the \gls{http} protocol for short, one-off communications between the \gls{dt} and the datacenter, as is common industry practice. + \item \textbf{\code{CpuUtilVictimSelector}}\\ + In order to ensure \code{OpenDC} can model different failure injection algorithms, we added new methods for selecting the hosts to be stopped. + The \code{CpuUtilVictimSelector} selects hosts based on their current \gls{cpu} utilization (\ie the hosts with the highest utilization are stopped first). + \item \textbf{\code{RoundRobinVictimSelector}}\\ + The \code{RoundRobinVictimSelector} is another algorithm to used to inject failures into hosts. + This method works in a round robin fashion, using the alphabetical order of the hosts (\ie by name). + For example, in a scenario hosts \code{H-01} to \code{H-20} are stopped first, and then \code{H-20} to \code{H-40} are stopped next, \etc + \item \textbf{\code{RandomVictimSelector}}\\ + This is the default \code{OpenDC} victim selection algorithm. + It randomly chooses which host to stop when injecting failures. + This component is left unmodified, but we include it here for the purposes of listing all the failure injection algorithms we use together. \end{enumerate} \begin{figure}[t] \centering |