Re: hwpmc support for Ivy Bridge Xeon

On Tue, Jan 29, 2013 at 2:05 AM, Davide Italiano <davide_at_freebsd.org> wrote:
> On Tue, Jan 29, 2013 at 12:29 AM, hiren panchasara
> <hiren.panchasara_at_gmail.com> wrote:
>> On Mon, Jan 28, 2013 at 7:27 PM, hiren panchasara
>> <hiren.panchasara_at_gmail.com> wrote:
>>> On Sat, Jan 26, 2013 at 1:58 AM, hiren panchasara
>>> <hiren.panchasara_at_gmail.com> wrote:
>>>> I've tried to update hwpmc by adding support for xeon class of Ivy
>>>> bridge processors.
>>>>
>>>> Thanks Jim for pointing me to the correct document. (325462-045US Jan 2013)
>>>>
>>>> I do not have a reference machine to test with. Any help in that
>>>> regard would be appreciated.
>>>
>>> Got a machine with ivy bridge xeon. Will test my changes and update here soon.
>>>
>>> Hiren
>>
>> It seems to be working fine:
>>
>> Here is o/p of "pmccontrol -L" listing all the event counters:
>> http://www.strugglingcoder.info/patches/hwpmc_ibx_pmccontrol.txt
>>
>
> I don't see anything wrong there.
>
>> And below is the o/p of pmctest.py script:
>> http://www.strugglingcoder.info/patches/hwpmc_ibx_pmctest.txt
>>
>
> With 'pmctest.py' are you talking about the gnn_at_ script available in tools/ ?
Yes.
> What are you profiling (ls, find, the kernel) ?
I was testing simple commands like ls.
> I've recently discovered an excellent tool from Peter in stress2 suite
> to test pmc. Maybe you can try it.
> http://svnweb.freebsd.org/base/user/pho/stress2/misc/pmc.sh?revision=237222&view=markup

Interesting tool. I will spend more time in looking into it. Though I
quickly did run pmc.sh

     run: run time  0+00:05:00, incarnations   1, load 100, verbose 1
10:48:37 Loop #1
      rw: run time  0+00:02:00, incarnations   8, load  70, verbose 1
    swap: run time  0+00:02:00, incarnations  38, load  80, verbose 1
   creat: run time  0+00:02:00, incarnations   3, load  80, verbose 1
10:52:05 Loop #2
      rw: run time  0+00:02:00, incarnations  17, load  70, verbose 1
   creat: run time  0+00:02:00, incarnations  18, load  80, verbose 1
   mkdir: run time  0+00:02:00, incarnations   9, load  80, verbose 1

Again, I appreciate you helping here,
Thanks,
Hiren
>
>> cheers,
>> Hiren
>>>>
>>>> Here are the diffs against head (245927):
>>>> http://www.strugglingcoder.info/patches/hwpmc_ibx.txt
>>>>
>>>> Thanks,
>>>> Hiren
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>
>
> Thanks
>
> --
> Davide