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Man Pages
KTRDUMP(8) FreeBSD System Manager's Manual KTRDUMP(8)

ktrdump
print kernel ktr trace buffer

ktrdump [-cflqrtH] [-i ktrfile] [-M core] [-N system] [-o outfile]

The ktrdump utility is used to dump the contents of the kernel ktr trace buffer.

The following options are available:

Print the CPU number that each entry was logged from.
Poll the kernel ktr trace buffer periodically dumping any new events after each poll.
Print the file and line number that each entry was logged from.
Quiet mode; do not print the column header.
Print relative timestamps rather than absolute timestamps.
Print the timestamp for each entry.
Print the thread ID for each entry.
ktrfile
File containing saved ktr trace events; for more information see the ktr(4) manual page.
system
The kernel image to resolve symbols from. The default is the value returned via getbootfile(3).
core
The core file or memory image to read from. The default is /dev/mem.
outfile
The file to write the output to. The default is standard output.

ktr(4), ktr(9)

The ktrdump utility first appeared in FreeBSD 5.0.

The ktrdump utility was implemented by Jake Burkholder <jake@FreeBSD.org>.

This manual page was written by Chad David <davidc@FreeBSD.org>.

October 22, 2018 FreeBSD 13.1-RELEASE

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