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RedHat 9 (Linux i386) - man page for amplot (redhat section 8)

AMPLOT(8)			     System Manager's Manual				AMPLOT(8)

NAME
       amplot - visualize the behavior of Amanda

SYNOPSIS
       amplot [ -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 parameters 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 out-
       put 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
       -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.

       -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 successfully to tape.

	      %BANDWIDTH: Percentage of allowed network bandwidth in use.

	      HOLDING  DISK: The higher line depicts space allocated on the holding disk to back-
	      ups in progress and completed backups waiting to be written  to  tape.   The  lower
	      line  depicts the fraction of the holding disk containing 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 estimates.

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), compress(1), gzip(1)

4th Berkeley Distribution								AMPLOT(8)


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