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ktrace

ktrace is a utility included with certain versions of BSD Unix and Mac OS X that traces kernel interaction with a program and dumps it to disk for the purposes of debugging and analysis. Traced kernel operations include system calls, name translations, signal processing, and I/O.

Trace files generated by ktrace (named ktrace.out by default) can be viewed in human-readable form by using the kdump utility.

Since Mac OS X Leopard, ktrace has been replaced by DTrace. The identically-named ktrace program in recent macOS versions does not have the same functions as this utility.

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See also

  • DTrace, Sun Microsystems's trace version, now running on OpenSolaris, FreeBSD, macOS, and Windows
  • kdump (Linux), Linux kernel's crash dump mechanism, which internally uses kexec
  • SystemTap
  • trace on Linux, part of the Linux Trace Toolkit

References

  1. "ktrace(1) manpage". freebsd.org. 2012-05-31. Retrieved 2014-07-23. http://www.freebsd.org/cgi/man.cgi?ktrace ↩

  2. "kdump(1) manpage". freebsd.org. 2014-03-28. Retrieved 2014-07-23. http://www.freebsd.org/cgi/man.cgi?kdump ↩

  3. "What happened to ktrace and kdump". discussions.apple.com. 2008-10-17. https://discussions.apple.com/thread/1756145 ↩