2012-11-26 오후 11:05, Jiri Olsa 쓴 글:
On Mon, Nov 26, 2012 at 10:45:16PM +0900, Chulmin Kim wrote:
Update for this issue.
I'm investigating the kernel source.
I found that Perf for AMD seems imperfect in linux 3.0 (my machine's
linux version).
For AMD family 15h, there is a commented line as follow.
- /* nortbridge counters not yet implemented: */ (line 541,
perf_event_amd.c )
there were some updates for 15h models recently,
you probably need to try latest sources
Thanks for your advice.
I installed v3.6.7 which is the latest stable kernel version.
However, the result of Perf shows that the northbridge event is not yet
supported as shown below.
root@ubuntu:~# /bin/perf stat -a -x ' ' -C 0 -e rc0 -e r4008307e1 sleep 1
3956883 raw 0xc0
<not supported> raw 0x4008307e1:HG
The recent patches for this issue might not have been included yet.
I should add the patchset I mentioned in this thread.
Will report it soon. :)
jirka
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