[ltt-dev] some question about ltt

[loody]

hi all:
I have some questions about ltt:
1. what is the out format about ltt?
it seems kernel.softirq_entry mean it calls softirq_entry and belongs
to kernel group but what does metadata.core_marker_format mean?
Calling core_marker_format? and what does metadata group mean?

2. ltt is used for monitoring kernel behavior, why there is a group
named "userspace"?

3. can I monitor the system calls, "set_thread_area" and "mprotect"?
I found these 2 functions in strace but cannot found it in ltt.
Should I open additional config ?


-- 
Regards,
miloody