Hi all,
I am using oprofile on my Beagleboard-xm, and what I am going to do is
using oprofile to characterize performance of some application running
on android.
In order to do some analyze , I want to take some different
metrics(ex: L1_INST , L2_ACCESS , ...) rather than just default
CPU_CYCLES metric.
But i cannot get any sample from oprofile after I change the setting
of the metric.
i.e., I can get sample if I use
ex: opcontrol --setup --event=CPU_CYCLES:100000
but cannot get any sample if I use metrics that need to programmed on
Performance Monitoring Unit (PMU).
ex: opcontrol --setup -event=L1_INST
Does anyone encounter same problem ??
Thanks!