[CFT] hwpmc support for Intel Ivy Bridge

[Fabien Thomas]

Le 3 sept. 2012 à 23:23, Baptiste Daroussin a écrit :

> On Mon, Sep 03, 2012 at 02:04:21PM +0200, Fabien Thomas wrote:
>> 	Hi,
>> 
>> Find a patch that add Intel  Ivy Bridge support to hwpmc(9).
>> The patch also support offcore RSP token for Sandy Bridge.
>> Note: No uncore support.
>> 
>> Tested on:
>> Intel(R) Xeon(R) CPU E3-1265L V2 @ 2.50GHz (2494.35-MHz K8-class CPU)
>> Origin = "GenuineIntel"  Id = 0x306a9  Family = 6  Model = 3a  Stepping = 9
>> 
>> http://people.freebsd.org/~fabient/patch-hwpmc_ivy_bridge_head
>> 
>> cd /usr/src && patch -p0 < patch-hwpmc_ivy_bridge_head 
>> and rebuild world.
>> 
>> 
>> Fabien
> 
> World building, I'll keep you in touch
> 
> Is there any particulat testing, I can do other than using the new world?

Thanks for testing!

Yes you can test it quickly using top mode for example:

kldload hwpmc
pmccontrol -L to list all events

some test:

- offcore
pmcstat -SOFF_CORE_RESPONSE_0,rsp=REQ_DMND_DATA_RD+RES_ANY -w1 -T

- unhalted cycle (programmable counter)
pmcstat -n2000000 -SCPU_CLK_UNHALTED.THREAD_P -w4 -T

- INSTR_RETIRED_ANY (fixed counter)
pmcstat -n2000000 -S INSTR_RETIRED_ANY -w4 -T

- Soft counter:
pmcstat -SPAGE_FAULT.ALL -w4 -T

all at the same time (and change view by pressing 'p':
pmcstat -SOFF_CORE_RESPONSE_0,rsp=REQ_DMND_DATA_RD+RES_ANY -n2000000 -SCPU_CLK_UNHALTED.THREAD_P   -n2000000 -S INSTR_RETIRED_ANY -SPAGE_FAULT.ALL -w1 -T


all events are described in the man page pmc.ivybridge


> 
> regards,
> Bapt