Messages in this thread | | | Subject | 2.6.28-rc9: oprofile regression | From | Tim Blechmann <> | Date | Sun, 21 Dec 2008 15:23:36 +0100 |
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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 [unhandled content-type:application/pgp-signature] | |