L25

lectures/L25-slides.tex

@@ -51,7 +51,7 @@
 Why are we doing this?
 
 \begin{itemize}
-	\item A new system is being developed -- limits \& risks
+	\item A new system is being developed---limits \& risks
 	\item Workload increase; can we handle it?
 	\item A sudden spike in workload is expected
 	\item Uptime requirements: 99.99\%
@@ -81,7 +81,7 @@
 \begin{frame}
 \frametitle{Stress Test?}
 
-Load testing is not the same as \alert{stress testing}.
+Load testing is not the same as \alert{stress testing} (to find the ultimate breaking strain\ldots).
 
 \begin{center}
   \includegraphics[width=0.5\textwidth]{images/barrescue.jpg}
@@ -94,7 +94,7 @@
 \begin{frame}
 \frametitle{Making the Plan}
 
-Let's make a test plan! Need answers to textit{who, what, where, when, \& why}.
+Let's make a test plan! Need answers to \textit{who, what, where, when, \& why}.
 
 We already covered why and that tells us about what.
 
@@ -203,7 +203,7 @@
 
 Scalability testing $\neq$  QA testing.
 
-Dev + QA on local computer.\\
+Dev + QA on local computer (or CI infrastructure).\\
 \quad Your concerns: Is it right? Is it fast enough?
 
 Fine, but it's no way to test if it scales. 
@@ -288,7 +288,7 @@
 
 
 \begin{frame}
-\frametitle{Endurance Tests -- How Long?}
+\frametitle{Endurance Tests---How Long?}
 
 You're familiar with the idea that endurance is different from peak workload.
 
@@ -309,7 +309,7 @@
 	\item 4 hours (40 km)? No.
 \end{itemize}
 
-But if we just observed my running for 15 minutes, we might conclude I could run at 10 km/h indefinitely, but that's not true.
+If we just observed my running for 15 minutes, we might conclude I could run at 10 km/h indefinitely. But that's not true.
 
 \end{frame}
 
@@ -344,7 +344,7 @@
 
 Same for filling up disk, exhausting file handles, log length.
 
-Another example: holiday code freeze as unintentional endurance test.
+Another example: holiday code freeze as unplanned surprise endurance test.
 
 \end{frame}
 
@@ -427,7 +427,7 @@
 
 There is a point at which I can make no more improvements in my running.
 
-Eliud Kipchoge can run a marathon in 2:01:09.\\
+Eliud Kipchoge ran a marathon in 2:01:09.\\
 \begin{center}
   \includegraphics[width=0.5\textwidth]{images/kipchoge.jpg}
 \end{center}
@@ -444,7 +444,7 @@
 Alternatively: change expectations!\\
 \quad Example: What if we don't bill all customers on the 1st of the month?
 
-Think outside the constraints as given in the initial problem statement.
+Think outside the constraints---i.e. those given in the initial problem statement.
 
 \end{frame}
 
@@ -465,4 +465,4 @@
 
 \end{frame}
 
-\end{document}
+\end{document}