1.\"- 2.\" Copyright (c) 2002 Chad David 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.Dd October 22, 2018 27.Dt KTRDUMP 8 28.Os 29.Sh NAME 30.Nm ktrdump 31.Nd print kernel ktr trace buffer 32.Sh SYNOPSIS 33.Nm 34.Op Fl cflqrtH 35.Op Fl i Ar ktrfile 36.Op Fl M Ar core 37.Op Fl N Ar system 38.Op Fl o Ar outfile 39.Sh DESCRIPTION 40The 41.Nm 42utility is used to dump the contents of the kernel ktr trace buffer. 43.Pp 44The following options are available: 45.Bl -tag -width ".Fl i Ar ktrfile" 46.It Fl c 47Print the CPU number that each entry was logged from. 48.It Fl l 49Poll the kernel ktr trace buffer periodically dumping any new events after 50each poll. 51.It Fl f 52Print the file and line number that each entry was logged from. 53.It Fl q 54Quiet mode; do not print the column header. 55.It Fl r 56Print relative timestamps rather than absolute timestamps. 57.It Fl t 58Print the timestamp for each entry. 59.It Fl H 60Print the thread ID for each entry. 61.It Fl i Ar ktrfile 62File containing saved ktr trace events; for more information see the 63.Xr ktr 4 64manual page. 65.It Fl N Ar system 66The kernel image to resolve symbols from. 67The default is the value returned via 68.Xr getbootfile 3 . 69.It Fl M Ar core 70The core file or memory image to read from. 71The default is 72.Pa /dev/mem . 73.It Fl o Ar outfile 74The file to write the output to. 75The default is standard output. 76.El 77.Sh SEE ALSO 78.Xr ktr 4 , 79.Xr ktr 9 80.Sh HISTORY 81The 82.Nm 83utility first appeared in 84.Fx 5.0 . 85.Sh AUTHORS 86.An -nosplit 87The 88.Nm 89utility was implemented by 90.An Jake Burkholder Aq Mt jake@FreeBSD.org . 91.Pp 92This manual page was written by 93.An Chad David Aq Mt davidc@FreeBSD.org . 94