Talk about Libunwind

report/report.tex

@@ -213,7 +213,12 @@ drastically the unwinding process.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \subsection{Unwinding state-of-the-art}
-\todo{}
+
+The most commonly used library to perform stack unwinding, in the Linux
+ecosystem, is \prog{libunwind}~\cite{libunwind}. While it is very robust and
+quite efficient, most of its optimization comes from fine-tuned code and good
+caching mechanisms. While parsing DWARF, \prog{libunwind} is forced to parse
+the relevant FDE from its start, until it finds the row it was seeking.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \subsection{General statistics}