Copyright (c) 2002 Chad David
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.Dd October 22, 2018 .Dt KTRDUMP 8 .Os .Sh NAME .Nm ktrdump .Nd print kernel ktr trace buffer .Sh SYNOPSIS .Nm .Op Fl cflqrtH .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.
p The following options are available: l -tag -width ".Fl i Ar ktrfile" t Fl c Print the CPU number that each entry was logged from. t Fl l Poll the kernel ktr trace buffer periodically dumping any new events after each poll. t Fl f Print the file and line number that each entry was logged from. t Fl q Quiet mode; do not print the column header. t Fl r Print relative timestamps rather than absolute timestamps. t Fl t Print the timestamp for each entry. t Fl H Print the thread ID for each entry. t Fl i Ar ktrfile File containing saved ktr trace events; for more information see the .Xr ktr 4 manual page. t Fl N Ar system The kernel image to resolve symbols from. The default is the value returned via .Xr getbootfile 3 . t Fl M Ar core The core file or memory image to read from. The default is
a /dev/mem . t 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 Mt jake@FreeBSD.org .
p This manual page was written by .An Chad David Aq Mt davidc@FreeBSD.org .