.\"-
.\" Copyright (c) 2002 Chad David
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.\" $FreeBSD$
.\"
.Dd February 6, 2015
.Dt KTRDUMP 8
.Os
.Sh NAME
.Nm ktrdump
.Nd print kernel ktr trace buffer
.Sh SYNOPSIS
.Nm
.Op Fl cfqrtH
.Op Fl i Ar ktrfile
.Op Fl M Ar core
.Op Fl N Ar system
.Op Fl o Ar outfile
.Sh DESCRIPTION
The
.Nm
utility is used to dump the contents of the kernel ktr trace buffer.
.Pp
The following options are available:
.Bl -tag -width ".Fl i Ar ktrfile"
.It Fl c
Print the CPU number that each entry was logged from.
.It Fl f
Print the file and line number that each entry was logged from.
.It Fl q
Quiet mode; do not print the column header.
.It Fl r
Print relative timestamps rather than absolute timestamps.
.It Fl t
Print the timestamp for each entry.
.It Fl H
Print the thread ID for each entry.
.It Fl i Ar ktrfile
File containing saved ktr trace events; for more information see the
.Xr ktr 4
manual page.
.It Fl N Ar system
The kernel image to resolve symbols from.
The default is the value returned via
.Xr getbootfile 3 .
.It Fl M Ar core
The core file or memory image to read from.
The default is
.Pa /dev/mem .
.It Fl o Ar outfile
The file to write the output to.
The default is standard output.
.El
.Sh SEE ALSO
.Xr ktr 4 ,
.Xr ktr 9
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 5.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
utility was implemented by
.An Jake Burkholder Aq jake@FreeBSD.org .
.Pp
This manual page was written by
.An Chad David Aq davidc@FreeBSD.org .