kdump.tproj/kdump.1

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  32 .\"     @(#)kdump.1     8.1 (Berkeley) 6/6/93
  33 .\" $FreeBSD: src/usr.bin/kdump/kdump.1,v 1.5.2.2 2001/08/16 13:16:51 ru Exp $
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  35 .Dd June 6, 1993
  36 .Dt KDUMP 1
  37 .Os
  38 .Sh NAME
  39 .Nm kdump
  40 .Nd display kernel trace data
  41 .Sh SYNOPSIS
  42 .Nm
  43 .Op Fl dnlRT
  44 .Op Fl f Ar file
  45 .Op Fl m Ar maxdata
  46 .Op Fl t Op cnisuw
  47 .Sh DESCRIPTION
  48 The
  49 .Nm
  50 command displays the kernel trace files produced with
  51 .Xr ktrace 1
  52 in human readable format.
  53 By default, the file
  54 .Pa ktrace.out
  55 in the current directory is displayed.
  56 .Pp
  57 The options are as follows:
  58 .Bl -tag -width Fl
  59 .It Fl d
  60 Display all numbers in decimal.
  61 .It Fl f Ar file
  62 Display the specified file instead of
  63 .Pa ktrace.out .
  64 .It Fl l
  65 Loop reading the trace file, once the end-of-file is reached, waiting for
  66 more data.
  67 .It Fl m Ar maxdata
  68 Display at most
  69 .Ar maxdata
  70 bytes when decoding
  71 .Tn I/O .
  72 .It Fl n
  73 Suppress ad hoc translations.
  74 Normally
  75 .Nm
  76 tries to decode many system calls into a more human readable format.
  77 For example,
  78 .Xr ioctl 2
  79 values are replaced with the macro name and
  80 .Va errno
  81 values are replaced with the
  82 .Xr strerror 3
  83 string.
  84 Suppressing this feature yields a more consistent output format and is
  85 easily amenable to further processing.
  86 .It Fl R
  87 Display relative timestamps (time since previous entry).
  88 .It Fl T
  89 Display absolute timestamps for each entry (seconds since epoch).
  90 .It Fl t Ar cnisuw
  91 See the
  92 .Fl t
  93 option of
  94 .Xr ktrace 1 .
  95 .El
  96 .Sh SEE ALSO
  97 .Xr ktrace 1
  98 .Sh HISTORY
  99 The
 100 .Nm
 101 command appeared in
 102 .Bx 4.4 .