Im using Opteron 6320.
I think there is a problem about PMU.
i tried to measure LLC cache miss by using "perf" tool in LINUX(CentOS 6.5)
when i tried
$ perf stat -e LLC-store-misses,LLC-load-misses ls
the results is as follows
<not supported> LLC-store-misses
7557 LLC-load-misses
as you can see, I cannot obtain "LLC-store-misses" .
And when i use raw event number.
from BKDG 15h, the L3 cache misses's event number is 0x4E1
when i tried
$ perf stat -e r4e1 ls
the results is as follows
Error: open_counter returned with 28 (No space left on device). /bin/dmesg may provide additional information.
Not all events could be opened.
there is not any messages in "/var/log/messages"
and I also did "opcontrol --deinit"
Even if "L3 cache misses", I cannot use almost PMU raw event code such as
1. "Link Transmit bandwidth"
2. "Memory Controller Reqeusts"
which is metrics what i want to measure
How can I use Raw Event Code with perf tool
FYI
- I compiled linux kernel with all performance related modules
- I only want to use "perf" tool which means I don't want to use CodeAnalysis and profile
Thanks.
