\documentclass[article]{strayman}
\usepackage[T1]{fontenc}
\usepackage[palatino, helvetica, courier, maths=cmr]{mdwfonts}
\usepackage{tikz}
\usepackage{gnuplot-lua-tikz}

\def\showplot#1#2{
  \begin{figure}
    \input{plot-#1}
    \caption{Performance on #2} \label{fig:plot-#1}
  \end{figure}
}

\begin{document}
\showplot{sbcl}{Steel Bank Common Lisp}
\showplot{ccl}{Clozure Common Lisp}
\showplot{ecl}{Embeddable Common Lisp}
\showplot{clisp}{GNU CLisp}
\showplot{cmucl}{Carnegie--Mellon University Common Lisp}
\showplot{abcl}{Armed Bear Common Lisp}
\end{document}
