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KTRDUMP(8) FreeBSD System Manager's Manual KTRDUMP(8) NAME ktrdump - print kernel ktr trace buffer SYNOPSIS ktrdump [-cflqrtH] [-i ktrfile] [-M core] [-N system] [-o outfile] DESCRIPTION The ktrdump utility is used to dump the contents of the kernel ktr trace buffer. The following options are available: -c Print the CPU number that each entry was logged from. -l Poll the kernel ktr trace buffer periodically dumping any new events after each poll. -f Print the file and line number that each entry was logged from. -q Quiet mode; do not print the column header. -r Print relative timestamps rather than absolute timestamps. -t Print the timestamp for each entry. -H Print the thread ID for each entry. -i ktrfile File containing saved ktr trace events; for more information see the ktr(4) manual page. -N system The kernel image to resolve symbols from. The default is the value returned via getbootfile(3). -M core The core file or memory image to read from. The default is /dev/mem. -o outfile The file to write the output to. The default is standard output. SEE ALSO ktr(4), ktr(9) HISTORY The ktrdump utility first appeared in FreeBSD 5.0. AUTHORS The ktrdump utility was implemented by Jake Burkholder <jake@FreeBSD.org>. This manual page was written by Chad David <davidc@FreeBSD.org>. FreeBSD 14.2-RELEASE October 22, 2018 FreeBSD 14.2-RELEASE