oprofile, "counter 0 not available"

brian · 2011-02-04 20:16:35

% sudo opcontrol --start && opcontrol --vmlinux=/usr/src/linux-2.6.37-ARCH/vmlinux && opcontrol --start
Password: 
Using default event: CPU_CLK_UNHALTED:100000:0:1:1
Error: counter 0 not available%

Any idea what's preventing this from working?

tavianator · 2011-02-04 21:33:13

Possibly a result of shells treating that command like this:

$ (sudo opcontrol --start) && opcontrol --vmlinux=/usr/src/linux-2.6.37-ARCH/vmlinux && opcontrol --start

I.e., the sudo only affects one part of a list of commands.

brian · 2011-02-04 22:53:14

I'm sorry, I did mess up the command, and that made it unclear. I should have put sudos everywhere. But that isn't the issue. Even with proper sudos, I get the same stuff.

tavianator · 2011-02-05 01:03:34

Is the oprofile module loaded?

brian · 2011-02-07 05:27:30

Yes. Supposedly the message indicates something's missing from /dev/oprofile.

marco44 · 2011-03-01 13:50:03

I've got the exact same problem. /dev/oprofile/0 does not exist.

It seems we are not alone on this one:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615964

marco44 · 2011-03-01 18:07:19

Ok, I've tested with the kernel26-lts and oprofile works, without changing anything else. Should I file a bug report ?

Arch Linux

#1 2011-02-04 20:16:35

oprofile, "counter 0 not available"

#2 2011-02-04 21:33:13

Re: oprofile, "counter 0 not available"

#3 2011-02-04 22:53:14

Re: oprofile, "counter 0 not available"

#4 2011-02-05 01:03:34

Re: oprofile, "counter 0 not available"

#5 2011-02-07 05:27:30

Re: oprofile, "counter 0 not available"

#6 2011-03-01 13:50:03

Re: oprofile, "counter 0 not available"

#7 2011-03-01 18:07:19

Re: oprofile, "counter 0 not available"

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