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* Re: 2.6.28-rc9: oprofile regression
@ 2008-12-22 14:55 Tim Blechmann
  0 siblings, 0 replies; 21+ messages in thread
From: Tim Blechmann @ 2008-12-22 14:55 UTC (permalink / raw
  To: Robert Richter; +Cc: Tim Blechmann, oprofile-list, linux-kernel, Andi Kleen

>>> i am experiencing an issue, similar to the one reported in
>>> http://lkml.org/lkml/2008/10/30/319.
>>
>> bisecting showed, that commit b99170288421c79f0c2efa8b33e26e65f4bb7fb8
>> (oprofile: Implement Intel architectural perfmon support) caused the
>> problem.
>> oddly, the newly introduced api is not used, since the model struct is
>> set during the ppro_init call ...
>
> Tim,
>
> I just tested rc9 on a system I have available and I could not
> reproduce this.
>
> cpu family	: 6
> model		: 15
> model name	: Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
> stepping	: 2
>
> Does fix 7c64ade53a6f977d73f16243865c42ceae999aea work on your system?

7c64ade53a6f977d73f16243865c42ceae999aea has been included in rc9, but still
i experience this issue ...

the only difference to my cpu is the stepping (i have stepping 6) ... also, in
case it matters, i am running a 64bit kernel ...

tim

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^ permalink raw reply	[flat|nested] 21+ messages in thread
* 2.6.28-rc9: oprofile regression
@ 2008-12-21 14:23 Tim Blechmann
  2008-12-21 21:23 ` Tim Blechmann
  0 siblings, 1 reply; 21+ messages in thread
From: Tim Blechmann @ 2008-12-21 14:23 UTC (permalink / raw
  To: oprofile-list, linux-kernel

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hello all,

i am experiencing an issue, similar to the one reported in
http://lkml.org/lkml/2008/10/30/319.

each time, i start the oprofile daemon, one NMI per cpu is executed. the
cpu is an intel core2 duo t7400, x86_64 architecture.

root@thinkpad:~# opcontrol -s
Using 2.6+ OProfile kernel interface.
Using log file /var/lib/oprofile/samples/oprofiled.log
Daemon started.
Profiler running.

tim@thinkpad:~/kernel/linux-2.6$ cat /proc/interrupts |grep NMI
NMI:          3          3   Non-maskable interrupts

root@thinkpad:~# opcontrol -h
Stopping profiling.
Killing daemon.

root@thinkpad:~# opcontrol -s
Using 2.6+ OProfile kernel interface.
Using log file /var/lib/oprofile/samples/oprofiled.log
Daemon started.
Profiler running.

tim@thinkpad:~/kernel/linux-2.6$ cat /proc/interrupts |grep NMI
NMI:          4          4   Non-maskable interrupts

oprofile samples are not collected.

commit 7c64ade53a6f977d73f16243865c42ceae999aea, which solved the issue
in the 2.6.28-rc2 regression, is already included in the 2.6.28-rc9
kernel, i am currently running. oprofile works fine with kernel 2.6.27
on the same machine.

best, tim

--
tim@klingt.org
http://tim.klingt.org

Nothing exists until or unless it is observed. An artist is making
something exist by observing it. And his hope for other people is that
they will also make it exist by observing it. I call it 'creative
observation.' Creative viewing.
  William S. Burroughs

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^ permalink raw reply	[flat|nested] 21+ messages in thread

end of thread, other threads:[~2009-01-17 16:41 UTC | newest]

Thread overview: 21+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-12-22 14:55 2.6.28-rc9: oprofile regression Tim Blechmann
  -- strict thread matches above, loose matches on Subject: below --
2008-12-21 14:23 Tim Blechmann
2008-12-21 21:23 ` Tim Blechmann
2008-12-22 12:11   ` Robert Richter
2008-12-26  2:42   ` Andi Kleen
2009-01-02 11:04     ` Tim Blechmann
2009-01-14 17:10       ` Thomas Gleixner
2009-01-14 18:19         ` Tim Blechmann
2009-01-15  8:46           ` Thomas Gleixner
2009-01-15  9:14             ` Tim Blechmann
2009-01-15 20:37               ` Thomas Gleixner
2009-01-16  0:53                 ` Tim Blechmann
2009-01-16  8:59                   ` Thomas Gleixner
2009-01-16 11:29                     ` Tim Blechmann
2009-01-16 15:52                       ` Thomas Gleixner
2009-01-16 16:02                         ` Tim Blechmann
2009-01-17 13:32                     ` Tim Blechmann
2009-01-17 14:14                       ` Robert Richter
2009-01-17 15:09                         ` Tim Blechmann
2009-01-17 15:56                           ` Robert Richter
2009-01-17 16:40                             ` Tim Blechmann

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