\documentclass[german,plainarticle,utf8]{standalone}
\usepackage{pgfplots}
\usepgfplotslibrary{dateplot}
\usepackage{tikz}
\usepackage{pgfplotstable}

\begin{document}
\begin{tikzpicture}
  \begin{axis}[
      title=Schreiben,
      width=15cm, height=10cm,
      xlabel={Dateigr\"{o}{\ss}e [KiB]},
      xmode=log, log basis x=2,
      ylabel={Record-Gr\"{o}{\ss}e [KiB]},
      ymode=log, log basis y=2
    ]
    \addplot3 [patch, patch table={iozone-fastfs-write.out}] table {iozone-fastfs-write};
  \end{axis}
\end{tikzpicture}
\end{document}