With the kernel version 3.11-rc6, I am able to get the intx attribute
(events within transactions) working. But there seems to be some problem
with intxcp attribute (events within transactions - events within aborted
transactions). This is what I get now:
task -i -e
UNHALTED_CORE_CYCLES,UNHALTED_CORE_CYCLES:intx,UNHALTED_CORE_CYCLES:intxcp
./cmd
22 020 143 037 UNHALTED_CORE_CYCLES (0,00% scaling, ena=9 670 910
328, run=9 670 910 328)
14 974 191 218 UNHALTED_CORE_CYCLES:intx (0,00% scaling, ena=9 670
910 328, run=9 670 910 328)
19 240 174 502 UNHALTED_CORE_CYCLES:intxcp (0,00% scaling, ena=9 670
910 328, run=9 670 910 328)
Note that the value for UNHALTED_CORE_CYCLES:intxcp is greater than for
UNHALTED_CORE_CYCLES:intx which as per my understanding is not possible.
The UNHALTED_CORE_CYCLES and UNHALTED_CORE_CYCLES:intx values match what I
get from Intel's PCM-TSX tool.
On Tue, Aug 20, 2013 at 11:04 AM, Stephane Eranian
<eran...@googlemail.com>wrote:
>
>
>
> On Tue, Aug 20, 2013 at 11:02 AM, Bhavishya Goel <bhavishya.g...@gmail.com
> > wrote:
>
>> Oh, I am using version 3.10.0. I will try with version 3.11-rc6. Thanks.
>> :)
>>
>>
>> 3.10 is not sufficient. HSW support went in 3.11
>
>
>> On Tue, Aug 20, 2013 at 10:41 AM, Stephane Eranian <
>> eran...@googlemail.com> wrote:
>>
>>>
>>>
>>>
>>> On Tue, Aug 20, 2013 at 9:56 AM, Bhavishya Goel <
>>> bhavishya.g...@gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I am trying to use the TSX event modifiers for libpfm4 on Intel Haswell
>>>> microarchitecture. But it doesn't seem to be working for me. The counts
>>>> that I see for performance events are the same with or without the
>>>> intx/intxcp attibute. Following is an example of command that I run:
>>>>
>>>> task -i -e UNHALTED_CORE_CYCLES:intx ./tsx_example
>>>>
>>>> The count for UNHALTED_CORE_CYCLES remains the same with and without
>>>> intx attribute. The intxcp attribute also doesn't make a difference.
>>>> Intel's PCM-TSX tool for the same code shows that cycles spent within
>>>> transaction are only 56% of the total cycles.
>>>>
>>>> And what kernel version are you using?
>>> You need kernel support to get Haswell support. In fact, you need
>>> 3.11.0-rc5 or so.
>>> With any older kernels, the tsx modifiers will be ignored.
>>>
>>>
>>
>>
>> --
>> ಠ_ಠ
>>
>>
>> ------------------------------------------------------------------------------
>> Introducing Performance Central, a new site from SourceForge and
>> AppDynamics. Performance Central is your source for news, insights,
>> analysis and resources for efficient Application Performance Management.
>> Visit us today!
>>
>> http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk
>> _______________________________________________
>> perfmon2-devel mailing list
>> perfmon2-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
>>
>>
>
--
ಠ_ಠ
------------------------------------------------------------------------------
Introducing Performance Central, a new site from SourceForge and
AppDynamics. Performance Central is your source for news, insights,
analysis and resources for efficient Application Performance Management.
Visit us today!
http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk
_______________________________________________
perfmon2-devel mailing list
perfmon2-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
