[lttng-dev] Error: Unable to list kernel events: Kernel tracer not available

[Szymon Rąpała]

Hi Jonathan,

Regarding memory:
~$ free -m
total        used        free      shared  buff/cache   available
Mem:           3518        1601        1063         105         853
1524
Swap:          3655          20        3635

I reinstaled dkms, but still there is no kernel tracer.
Full logs: https://paste.debian.net/1054193/
This part looks strange:

DKMS: uninstall completed.
------------------------------
Deleting module version: 2.10.8
completely from the DKMS tree.
------------------------------
Done.
Unpacking lttng-modules-dkms (2.10.8-1~ubuntu16.04.1) over
(2.10.8-1~ubuntu16.04.1) ...
Setting up lttng-modules-dkms (2.10.8-1~ubuntu16.04.1) ...
Loading new lttng-modules-2.10.8 DKMS files...
Building for 4.4.0-98-generic and 4.4.0-139-generic
Module build for the currently running kernel was skipped since the
kernel source for this kernel does not seem to be installed.
Building initial module for 4.4.0-139-generic
Done.

Regards,



pon., 3 gru 2018 o 15:36 Jonathan Rajotte-Julien <
jonathan.rajotte-julien at efficios.com> napisał(a):

> Hi Szymon,
>
> Based on the sessiond logs and the content of "/lib/modules/`uname
> -r`/extra" there was clearly a problem on lttng-modules-dkms installation.
>
> Most of the time, the culprit is the lack of memory at compile time. How
> much memory
> is installed on your system?
>
> Please reinstall the package:
>     sudo apt-get install --reinstall lttng-modules-dkms
>
> Make sure to take a good look at the logs.
>
> Cheers
>
> On Mon, Dec 03, 2018 at 12:30:18PM +0100, Szymon Rąpała wrote:
> > Thanks for response.
> > Please check console logs here: https://paste.debian.net/1054148
> >
> > Thanks in advance for further support.
> > Szymon
> >
>
> --
> Jonathan Rajotte-Julien
> EfficiOS
>
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