Revision as of 15:38, 9 March 2011
Tracing is done by means of kernel tracepoints, the ftrace infrastructure, and trace-cmd.
- Install the udis86 and udis86-devel packages
- download trace-cmd:
$ git clone trace-cmd git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git $ cd trace-cmd
- build and install:
$ make && sudo make install
# trace-cmd record -b 20000 -e kvm
(trace-cmd will wait)
run your workload, then stop trace-cmd with ctrl-C. trace-cmd will write a trace.dat file.
Analyzing the trace
will format and display the contents of the trace.