ktrace is a
utility
As a topic of economics, utility is used to model worth or value. Its usage has evolved significantly over time. The term was introduced initially as a measure of pleasure or happiness as part of the theory of utilitarianism by moral philosoph ...
included with certain versions of
BSD Unix and
Mac OS X
macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac computers. Within the market of desktop and la ...
that
traces
Traces may refer to:
Literature
* ''Traces'' (book), a 1998 short-story collection by Stephen Baxter
* ''Traces'' series, a series of novels by Malcolm Rose
Music Albums
* ''Traces'' (Classics IV album) or the title song (see below), 1969
* ''Tra ...
kernel
Kernel may refer to:
Computing
* Kernel (operating system), the central component of most operating systems
* Kernel (image processing), a matrix used for image convolution
* Compute kernel, in GPGPU programming
* Kernel method, in machine learn ...
interaction with a program and dumps it to disk for the purposes of
debugging and analysis. Traced kernel operations include
system call
In computing, a system call (commonly abbreviated to syscall) is the programmatic way in which a computer program requests a service from the operating system on which it is executed. This may include hardware-related services (for example, acc ...
s, namei translations,
signal
In signal processing, a signal is a function that conveys information about a phenomenon. Any quantity that can vary over space or time can be used as a signal to share messages between observers. The '' IEEE Transactions on Signal Processing' ...
processing, and
I/O.
Trace files generated by ktrace (named by default) can be viewed in human-readable form by using the kdump utility.
Since
Mac OS X Leopard
Mac OS X Leopard (version 10.5) is the sixth software versioning, major release of macOS, Apple Inc., Apple's desktop and server operating system for Macintosh computers. Leopard was released on October 26, 2007 as the successor of Mac OS X Tig ...
, ktrace has been replaced by
DTrace
DTrace is a comprehensive dynamic tracing framework originally created by Sun Microsystems for troubleshooting kernel and application problems on production systems in real time.
Originally developed for Solaris, it has since been released und ...
.
See also
*
DTrace
DTrace is a comprehensive dynamic tracing framework originally created by Sun Microsystems for troubleshooting kernel and application problems on production systems in real time.
Originally developed for Solaris, it has since been released und ...
, Sun Microsystems's trace version, now running on OpenSolaris, FreeBSD, macOS, and Windows
*
kdump (Linux)
kdump is a feature of the Linux kernel that creates crash dumps in the event of a kernel crash. When triggered, kdump exports a memory image (also known as vmcore) that can be analyzed for the purposes of debugging and determining the cause ...
, Linux kernel's crash dump mechanism, which internally uses kexec
*
SystemTap
*
trace
Trace may refer to:
Arts and entertainment Music
* ''Trace'' (Son Volt album), 1995
* ''Trace'' (Died Pretty album), 1993
* Trace (band), a Dutch progressive rock band
* ''The Trace'' (album)
Other uses in arts and entertainment
* ''Trace'' ...
on Linux, part of the Linux Trace Toolkit
References
{{unix-stub
Unix programming tools