System Administration Commands ndmpstat(1M)
NAME
ndmpstat - show NDMP backup progress statistics
SYNOPSIS
ndmpstat [tapes] [interval [count]
DESCRIPTION
The ndmpstat utility reports Network Data Management Proto-
col (NDMP) statistics, among which are NDMP worker threads,
disk IO, tape IO, files operation, performance, and backup
activity.
ndmpstat reports the aggregate statistics for all tapes and
disks. In order to obtain statistics for specific tape dev-
ices, the tape device name should be passed as argument to
the utility.
When invoked, ndmpstat begins its display with a one-line
summary of the NDMP daemon activity since the NDMP service
was invoked.
Display Fields
The fields in ndmpstat output are described as follows:
wthr
Report the number of worker threads in each of the
four following states:
r
the number of worker threads running
w
the number of blocked worker threads that are wait-
ing for resources such as I/O and paging
b
the number of backup operations currently running
r
the number of restore operations currently running
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System Administration Commands ndmpstat(1M)
file
Report on usage of filesystem.
rd
the number of files being read
wr
the number of files being written
disk
Report the number of disk operations per interval.
rd
the number of disk blocks being read
wr
the number of disk blocks being written
tape
Report the number of tape operations per interval. There
are slots for up to four tapes, labeled with a single
number. The number indicates the name of the device
under /dev/rmt.
rd
the number of tape blocks being read
wr
the number of tape blocks being written
bytes
Report the number of bytes transferred. This is the
aggregate value of both tape and disk devices. The
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System Administration Commands ndmpstat(1M)
number is in kilobytes.
rd
the number of kilobytes being read
wr
the number of kilobytes being written
perf
Displays a rough estimate of performance of the
backup/restore operation in megabytes per second.
bk
backup performance
rs
restore performance
prcnt
Display the comparative usage of resources, in percent.
dsk
disk I/O time
tpe
tape I/O time
otr
other time (memory or idle)
See EXAMPLES.
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System Administration Commands ndmpstat(1M)
OPERANDS
The following operands are supported:
count Specifies the number of times that the statis-
tics display is repeated.
tape Specifies which tapes are to be given priority
in the output. A command line is limited to a
maximum of four tape devices. A common tape name
is /dev/rmt/n, where n is an integer.
interval Specifies the number of seconds over which
ndmpstat summarizes activity. The specified
interval remains in effect till the command is
terminated.
EXAMPLES
Example 1 Using ndmpstat
The following command displays a summary of NDMP daemon
activity at five-second intervals.
example% ndmpstat 5
wthr file disk tape bytes perf prcnt
r w b r rd wr rd wr rd wr rd wr bk rs dsk tpe otr
1 0 3 6 50 9 1250 0 32544 4455 42335 3234 5 4 20 40 40
1 0 0 1 1 0 128 0 0 128 64 64 1 0 0 80 20
1 0 0 1 2 0 128 0 0 0 64 0 1 0 80 0 20
1 0 0 1 1 0 128 0 0 0 64 0 1 0 80 0 20
1 0 0 1 3 0 128 0 0 0 64 0 0 0 80 0 20
1 0 0 1 1 0 128 0 0 128 64 64 1 0 0 80 20
^C
example%
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
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System Administration Commands ndmpstat(1M)
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWndmpu
Interface Stability See below
Invocation is evolving. Human readable output is unstable.
SEE ALSO
iostat(1M), mpstat(1M), ndmpd(1M), ndmpadm(1M), attri-
butes(5)
NOTES
Performance numbers are not accurate and are rounded up at
the MB/sec. boundary.
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