59 lines
1.3 KiB
Plaintext
59 lines
1.3 KiB
Plaintext
.TH tcpstat.d 1m "$Date:: 2007-08-05 #$" "USER COMMANDS"
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.SH NAME
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tcpstat.d \- print TCP statistics. Uses DTrace.
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.SH SYNOPSIS
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.B tcpstat.d
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.SH DESCRIPTION
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tcpstat.d is a DTrace program to print TCP statistics every second,
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retrieved from the MIB provider.
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This program can be used to help identify how utilised the network
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interfaces may be, as well as TCP transmission errors.
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The TCP statistics are documented in the mib2_tcp struct
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in /usr/include/inet/mib2.h; and also in the mib provider
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chapter of the DTrace Guide, found at
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http://docs.sun.com/db/doc/817-6223.
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Since this uses DTrace, only the root user or users with the
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dtrace_kernel privilege can run this command.
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.SH OS
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Solaris
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.SH STABILITY
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stable - needs the mib provider.
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.SH EXAMPLES
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.TP
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Print statistics every second,
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#
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.B tcpstat.d
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.PP
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.SH FIELDS
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.TP
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TCP_out
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TCP bytes sent
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.TP
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TCP_outRe
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TCP bytes retransmitted
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.TP
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TCP_in
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TCP bytes received
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.TP
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TCP_inDup
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TCP bytes received duplicated
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.TP
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TCP_inUn
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TCP bytes received out of order
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.PP
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.SH DOCUMENTATION
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See the DTraceToolkit for further documentation under the
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Docs directory. The DTraceToolkit docs may include full worked
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examples with verbose descriptions explaining the output.
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.SH EXIT
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tcpstat.d will run forever until Ctrl\-C is hit.
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.SH AUTHOR
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Brendan Gregg
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[Sydney, Australia]
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.SH SEE ALSO
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nicstat(1M), dtrace(1M)
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