Re: Changing frequency rate to perf mem

[Namhyung Kim <namhyung@kernel.org>]

Hi Harald,

On Thu, 24 Oct 2013 09:48:09 +0200, Harald Servat wrote:
> On 24/10/13 07:12, Andi Kleen wrote:
>> Harald Servat <harald.servat@bsc.es> writes:
>>> Unfortunately, this seems to break something and
>>> perf segfaults often. Which is the most appropriate way to tune the
>>> user frequency of perf mem?
>>
>> Best would be probably to fix it to pass through unknown
>> options, then -F/-c could be just used. I'm not sure
>> if this is possible easily with the git option parser.
>
> Sorry, I'm not sure what is the "git option parser" here.

Just implementation details.  The source code of the option parser came
from the git project.


> I think that this could be implemented extending the mem_options[] in
> file builtin-mem.c lines 205-221.

Or else, use 'perf record' directly as Andi suggested.

>
>> Alternatively you can just specify the command line perf mem record
>> would specify directly to perf record, plus -c/-F

  $ perf record -Wd -e cpu/mem-loads/pp -F 200 -- ls

  $ perf mem report


Thanks,
Namhyung