amplot(8)

1AMPLOT(8)               System Administration Commands               AMPLOT(8)
2
3
4

NAME

6       amplot - visualize the behavior of Amanda
7

SYNOPSIS

9       amplot [-b] [-c] [-e] [-g] [-l] [-p] [-t T] amdump_files
10
11

DESCRIPTION

13       Amplot reads an amdump output file that Amanda generates each run (e.g.
14       amdump.1) and translates the information into a picture format that may
15       be used to determine how your installation is doing and if any
16       parameters need to be changed.  Amplot also prints out amdump lines
17       that it either does not understand or knows to be warning or error
18       lines and a summary of the start, end and total time for each backup
19       image.
20
21       Amplot is a shell script that executes an awk program (amplot.awk) to
22       scan the amdump output file. It then executes a gnuplot program
23       (amplot.g) to generate the graph. The awk program is written in an
24       enhanced version of awk, such as GNU awk (gawk(1) version 2.15 or
25       later) or nawk(1).
26
27       During execution, amplot generates a few temporary files that gnuplot
28       uses. These files are deleted at the end of execution.
29
30       See the amanda(8) man page for more details about Amanda.
31

OPTIONS

33       -b
34           Generate b/w postscript file (need -p).
35
36       -c
37           Compress amdump_files after plotting.
38
39       -e
40           Extend the X (time) axis if needed.
41
42       -g
43           Direct gnuplot output directly to the X11 display (default).
44
45       -p
46           Direct postscript output to file YYYYMMDD.ps (opposite of -g).
47
48       -l
49           Generate landscape oriented output (needs -p).
50
51       -t T
52           Set the right edge of the plot to be T hours.
53
54       The amdump_files may be in various compressed formats (compress, gzip,
55       pact, compact).
56

INTERPRETATION

58       The figure is divided into a number of regions. There are titles on the
59       top that show important statistical information about the configuration
60       and from this execution of amdump. In the figure, the X axis is time,
61       with 0 being the moment amdump was started. The Y axis is divided into
62       5 regions:
63
64       QUEUES: How many backups have not been started, how many are waiting on
65       space in the holding disk and how many have been transferred
66       successfully to tape.
67
68       %BANDWIDTH: Percentage of allowed network bandwidth in use.
69
70       HOLDING DISK: The higher line depicts space allocated on the holding
71       disk to backups in progress and completed backups waiting to be written
72       to tape. The lower line depicts the fraction of the holding disk
73       containing completed backups waiting to be written to tape including
74       the file currently being written to tape. The scale is percentage of
75       the holding disk.
76
77       TAPE: Tape drive usage.
78
79       %DUMPERS: Percentage of active dumpers.
80
81       The idle period at the left of the graph is time amdump is asking the
82       machines how much data they are going to dump. This process can take a
83       while if hosts are down or it takes them a long time to generate
84       estimates.
85

BUGS

87       Reports lines it does not recognize, mainly error cases but some are
88       legitimate lines the program needs to be taught about.
89

AUTHORS

96       Olafur Gudmundsson <ogud@tis.com>
97           Trusted Information Systems
98
99       Stefan G. Weichinger <sgw@amanda.org>
100
101
102
103Amanda 3.1.3                      10/04/2010                         AMPLOT(8)