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Some more ktruss documentation from Christian Biere <christianbiere@gmx.de>

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in PR#17111.
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gmcgarry 2003-05-02 07:52:23 +00:00
parent 9256662c6b
commit e00d2f72dc
1 changed files with 37 additions and 7 deletions
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usr.bin/ktrace/ktrace.1
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@ -1,4 +1,4 @@
.\" $NetBSD: ktrace.1,v 1.19 2003/05/02 07:40:20 gmcgarry Exp $
.\" $NetBSD: ktrace.1,v 1.20 2003/05/02 07:52:23 gmcgarry Exp $
.\"
.\" Copyright (c) 1990, 1993
.\" The Regents of the University of California. All rights reserved.
@ -50,7 +50,7 @@
.Op Fl adis
.Op Fl f Ar trfile
.Op Fl t Ar trstr
command
.Ar command
.Nm ktruss
.Op Fl aCcdilRT
.Op Fl e Ar emulation
@ -113,11 +113,15 @@ Clear the trace points associated with the specified file or processes.
.It Fl d
Descendants; perform the operation for all current children of the
designated processes.
.It Fl f Ar file
.It Fl f Ar trfile
Log trace records to
.Ar file
.Ar trfile
instead of
.Pa ktrace.out .
It Fl f Ar infile
Read the trace records from
.Ar infile
and print them in a human readable format to standard out.
.It Fl g Ar pgid
Enable (disable) tracing on all processes in the process group (only one
.Fl g
@ -126,7 +130,20 @@ flag is permitted).
Inherit; pass the trace flags to all future children of the designated
processes.
.It Fl l
Continue monitoring process after it has finished.
Poll the trace file for new data and prints it to standard out.
Only for use together with the
.Fl f
option.
.It Fl m Ar maxdata
Print at most
.Ar maxdata
bytes of data. This is used for pointer type arguments e.g. strings.
The data will be escaped in C-Style.
.It Fl o Ar outfile
Log trace records to
.Ar outfile .
Without this option ktruss will print its output in a human
readable format to standard out.
.It Fl p Ar pid
Enable (disable) tracing on the indicated process id (only one
.Fl p
@ -134,9 +151,11 @@ flag is permitted).
.It Fl s
Write to the trace file with synchronized I/O.
.It Fl R
Display relative time stamps.
Display relative time stamps to output.
.It Fl T
Display time stamps.
Same as
.Fl R
options but use absolute timestamps instead.
.It Fl t Ar trstr
The string argument represents the kernel trace points, one per letter.
The following table equates the letters with the tracepoints:
@ -179,6 +198,11 @@ The
and
.Ar command
options are mutually exclusive.
The
.Fl R
and
.Fl T
options are also mutually exclusive.
.Sh EXAMPLES
# trace all kernel operations of process id 34
.Dl $ ktrace -p 34
@ -211,6 +235,12 @@ on process 67
.Pp
# run the command "w", displaying to standard output
.Dl $ ktruss w
.Pp
# trace process 42 and log the records to "ktruss.out"
.Dl $ ktruss -p 42 -o ktruss.out
.Pp
# poll ktruss.out for available records and print them
.Dl $ ktruss -lf ktruss.out
.Sh SEE ALSO
.Xr kdump 1
.Sh HISTORY