Re: [CFT] hwpmc support for Intel Ivy Bridge
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On Tue, Sep 04, 2012 at 09:35:07AM +0200, Fabien Thomas wrote:
>=20
> Le 3 sept. 2012 =E0 23:23, Baptiste Daroussin a =E9crit :
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> > On Mon, Sep 03, 2012 at 02:04:21PM +0200, Fabien Thomas wrote:
> >> Hi,
> >>=20
> >> 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.
> >>=20
> >> Tested on:
> >> Intel(R) Xeon(R) CPU E3-1265L V2 @ 2.50GHz (2494.35-MHz K8-class CPU)
> >> Origin =3D "GenuineIntel" Id =3D 0x306a9 Family =3D 6 Model =3D 3a =
Stepping =3D 9
> >>=20
> >> http://people.freebsd.org/~fabient/patch-hwpmc_ivy_bridge_head
> >>=20
> >> cd /usr/src && patch -p0 < patch-hwpmc_ivy_bridge_head=20
> >> and rebuild world.
> >>=20
> >>=20
> >> Fabien
> >=20
> > World building, I'll keep you in touch
> >=20
> > Is there any particulat testing, I can do other than using the new worl=
d?
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> Thanks for testing!
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> Yes you can test it quickly using top mode for example:
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> kldload hwpmc
> pmccontrol -L to list all events
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> some test:
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> - offcore
> pmcstat -SOFF_CORE_RESPONSE_0,rsp=3DREQ_DMND_DATA_RD+RES_ANY -w1 -T
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> - unhalted cycle (programmable counter)
> pmcstat -n2000000 -SCPU_CLK_UNHALTED.THREAD_P -w4 -T
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> - INSTR_RETIRED_ANY (fixed counter)
> pmcstat -n2000000 -S INSTR_RETIRED_ANY -w4 -T
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> - Soft counter:
> pmcstat -SPAGE_FAULT.ALL -w4 -T
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> all at the same time (and change view by pressing 'p':
> pmcstat -SOFF_CORE_RESPONSE_0,rsp=3DREQ_DMND_DATA_RD+RES_ANY -n2000000 -S=
CPU_CLK_UNHALTED.THREAD_P -n2000000 -S INSTR_RETIRED_ANY -SPAGE_FAULT.ALL=
-w1 -T
>=20
>=20
> all events are described in the man page pmc.ivybridge
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>=20
> >=20
> > regards,
> > Bapt
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Hi,
here are the results
# pmccontrol -L
SOFT
CLOCK.STAT
CLOCK.HARD
LOCK.FAILED
PAGE_FAULT.WRITE
PAGE_FAULT.READ
PAGE_FAULT.ALL
# pmcstat -SOFF_CORE_RESPONSE_0,rsp=3DREQ_DMND_DATA_RD+RES_ANY -w1 -T
pmcstat: ERROR: Cannot allocate system-mode pmc with specification "OFF_COR=
E_RESPONSE_0,rsp=3DREQ_DMND_DATA_RD+RES_ANY": Invalid argument
# pmcstat -n2000000 -S INSTR_RETIRED_ANY -w4 -T
pmcstat: ERROR: Cannot allocate system-mode pmc with specification "INSTR_R=
ETIRED_ANY": Invalid argument
# pmcstat -n2000000 -S INSTR_RETIRED_ANY -w4 -T
pmcstat: ERROR: Cannot allocate system-mode pmc with specification "INSTR_R=
ETIRED_ANY": Invalid argument
# pmcstat -SPAGE_FAULT.ALL -w4 -T
(This one seems to work correctly
# pmcstat -SOFF_CORE_RESPONSE_0,rsp=3DREQ_DMND_DATA_RD+RES_ANY -n2000000 -S=
CPU_CLK_UNHALTED.THREAD_P -n2000000 -S INSTR_RETIRED_ANY -SPAGE_FAULT
pmcstat: ERROR: Cannot allocate system-mode pmc with specification "OFF_COR=
E_RESPONSE_0,rsp=3DREQ_DMND_DATA_RD+RES_ANY": Invalid argument
The pmctest.py fails:=20
# ./test/hwpmc/pmctest.py
Traceback (most recent call last):
File "./test/hwpmc/pmctest.py", line 94, in <module>
main()
File "./test/hwpmc/pmctest.py", line 81, in main
stdout=3DPIPE)
File "/usr/local/lib/python2.7/subprocess.py", line 679, in __init__
errread, errwrite)
File "/usr/local/lib/python2.7/subprocess.py", line 1249, in _execute_chi=
ld
raise child_exception
TypeError: execv() arg 2 must contain only strings
regards,
Bapt
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