On Sun, Feb 12, 2012 at 4:32 AM, Wei Yang <weiyang.ker...@gmail.com> wrote: > After some run time, I run the script like: > ./scripts/simpletrace.py qemu_trace_events_parse qemu_trace.log > > The qemu_trace_events_parse is : > g_realloc(addr) > g_malloc(addr) > > The output looks like: > g_malloc 1.831 addr=0xb945d1f0 > g_malloc 2.498 addr=0xb945d1f0 > g_realloc 4.715 addr=0x10 > g_realloc 1.520 addr=0xc > g_realloc 1.505 addr=0xc > > The steps I used is correct?
Yes, that's fine. The output fields are trace event name, delta time since last event (in microseconds), and arguments printed as hex numbers. > I just guess the format of input events file of the simpletrace.py. > For so many available events, how could I specify the format of all > those events? simpletrace.py does not format events in a special way. It simply prints them all out as hex numbers. If you want special formatting you should write a custom trace analysis script. It's pretty easy to do and you can find an example here: http://blog.vmsplice.net/2011/03/how-to-write-trace-analysis-scripts-for.html If you looked at the simpletrace.py source code you may have noticed that it is actually a Python module. It provides an API so you can process the trace events that you are interested in. Stefan
