amplot



AMPLOT(8)                                                            AMPLOT(8)




NAME

       amplot - visualize the behavior of AMANDA


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 (am-
       plot.g) to generate the graph. The awk program is  written  in  an  en-
       hanced  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 (needs -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 configuration
       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 success-
       fully 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 waiting to be written
       to tape. The lower line depicts the fraction of the holding  disk  con-
       taining  completed  backups waiting to be written to tape including the
       file currently being written to tape. The scale is  percentage  of  the
       holding disk.


       TAPE: Tape drive usage.


       %DUMPERS: Percentage of active dumpers.


       The  idle  period at the left of the graph is time amdump is asking the
       machines how much data they are going to dump. This process can take  a
       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, former-
       ly at University of Maryland, College Park: Original text


       Stefan  G. Weichinger, <sgw@amanda.org>, maintainer of the AMANDA-docu-
       mentation: XML-conversion



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)




                                                                     AMPLOT(8)

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