Update German and French manuals to latest English

[bacula/docs] / docs / manuals / de / problems / tapetesting.tex

diff --git a/docs/manuals/de/problems/tapetesting.tex b/docs/manuals/de/problems/tapetesting.tex
index 8b1bdee6552ce0e6a7b85202bbc11eced85e7720..710f90e75dbc34bffd06b47de733fa5563e7b4ba 100644 (file)
--- a/docs/manuals/de/problems/tapetesting.tex
+++ b/docs/manuals/de/problems/tapetesting.tex
@@ -353,6 +353,54 @@ See the section above on setting your {\bf Archive device} correctly.
 For FreeBSD users, please see the notes below for doing further testing of
 your tape drive. 
 
+\subsection{Testing tape drive speed}
+\label{sec:btapespeed}
+
+To determine the best configuration of your tape drive, you can run the
+\texttt{speed} command available in the \texttt{btape} program.
+
+This command can have the following arguments:
+\begin{itemize}
+\item[\texttt{file\_size=n}] Specify the Maximum File Size for this test
+  (between 1 and 5GB). This counter is in GB.
+\item[\texttt{nb\_file=n}] Specify the number of file to be written. The amount
+  of data should be greater than your memory ($file\_size*nb\_file$).
+\item[\texttt{skip\_zero}] This flag permits to skip tests with constant
+  data.
+\item[\texttt{skip\_random}] This flag permits to skip tests with random
+  data.
+\item[\texttt{skip\_raw}] This flag permits to skip tests with raw access.
+\item[\texttt{skip\_block}] This flag permits to skip tests with Bacula block
+  access.
+\end{itemize}
+
+\begin{verbatim}
+*speed file_size=3 skip_raw
+btape.c:1078 Test with zero data and bacula block structure.
+btape.c:956 Begin writing 3 files of 3.221 GB with blocks of 129024 bytes.
+++++++++++++++++++++++++++++++++++++++++++
+btape.c:604 Wrote 1 EOF to "Drive-0" (/dev/nst0)
+btape.c:406 Volume bytes=3.221 GB. Write rate = 44.128 MB/s
+...
+btape.c:383 Total Volume bytes=9.664 GB. Total Write rate = 43.531 MB/s
+
+btape.c:1090 Test with random data, should give the minimum throughput.
+btape.c:956 Begin writing 3 files of 3.221 GB with blocks of 129024 bytes.
++++++++++++++++++++++++++++++++++++++++++++
+btape.c:604 Wrote 1 EOF to "Drive-0" (/dev/nst0)
+btape.c:406 Volume bytes=3.221 GB. Write rate = 7.271 MB/s
++++++++++++++++++++++++++++++++++++++++++++
+...
+btape.c:383 Total Volume bytes=9.664 GB. Total Write rate = 7.365 MB/s
+
+\end{verbatim}
+
+When using compression, the random test will give your the minimum throughput
+of your drive . The test using constant string will give you the maximum speed
+of your hardware chain. (cpu, memory, scsi card, cable, drive, tape).
+
+You can change the block size in the Storage Daemon configuration file.
+
 \label{SCSITricks}
 \subsection{Linux SCSI Tricks}
 \index[general]{Tricks!Linux SCSI}