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amplot


SYNOPSIS

       amplot [ -b ] [ -c ] [ -e ] [ -g ] [ -l ] [ -p ] [ -t T ] amdump_files


DESCRIPTION

       Amplot reads an amdump output file that Amanda generates each run (e.g.
       amdump.1) and translates the information into a picture format that may
       be  used to determine how your installation is doing and if any parame-
       ters need to be changed.  Amplot also prints out amdump lines  that  it
       either  does not understand or knows to be warning or error lines and a
       summary of the start, end and total time for each backup image.

       Amplot is a shell script that executes an awk program  (amplot.awk)  to
       scan  the  amdump  output  file.   It  then  executes a gnuplot program
       (amplot.g) to generate the graph.  The awk program  is  written  in  an
       enhanced  version  of awk, such as GNU awk (gawk version 2.15 or later)
       or nawk.

       During execution, amplot generates a few temporary files  that  gnuplot
       uses.  These files are deleted at the end of execution.

       See the amanda(8) man page for more details about Amanda.


OPTIONS

       -b     Generate b/w postscript file (need -p).

       -c     Compress amdump_files after plotting.

       -e     Extend the X (time) axis if needed.

       -g     Direct gnuplot output directly to the X11 display (default).

       -p     Direct postscript output to file YYYYMMDD.ps (opposite of -g).

       -l     Generate landscape oriented output (need -p).

       -t T   Set the right edge of the plot to be T hours.

       The  amdump_files may be in various compressed formats (compress, gzip,
       pact, compact).


INTERPRETATION

       The figure is divided into a number of regions.  There  are  titles  on
       the  top that show important statistical information about the configu-
       ration and from this execution of amdump.  In the figure, the X axis is
       time,  with  0  being  the  moment  amdump  was started.  The Y axis is
       divided into 5 regions:

              QUEUES: How many backups have not been  started,  how  many  are
              waiting  on  space  in  the  holding disk and how many have been
              transferred successfully to tape.

              %BANDWIDTH: Percentage of allowed network bandwidth in use.

              HOLDING DISK: The higher line depicts  space  allocated  on  the
              holding  disk to backups in progress and completed backups wait-
              ing to be written to tape.  The lower line depicts the  fraction

       while  if hosts are down or it takes them a long time to generate esti-
       mates.


AUTHOR

       Olafur Gudmundsson ogud@tis.com
       Trusted Information Systems
       formerly at University of Maryland, College Park


BUGS

       Reports lines it does not recognize, mainly error cases  but  some  are
       legitimate lines the program needs to be taught about.


SEE ALSO

       amanda(8), amdump(8), gawk(1), nawk(1), awk(1), gnuplot(1), sh(1), com-
       press(1), gzip(1)

4th Berkeley Distribution                                            AMPLOT(8)

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