On 12/11/25 09:30, Kienan Stewart via lttng-dev wrote:
Hi Amir,
On 12/10/25 9:40 PM, Amir Najafi Zadeh via lttng-dev wrote:
Hello everyone,
I hope you’re doing well. My name is Amir, and I’m a PhD student in
the Computer Science department at Stony Brook University, New York.
I have a question about the LTTng context that I haven’t been able to
find an answer for in the docs or man pages. Does LTTng support adding
the cgroup ID or cgroup path as a context field? I want to filter my
trace results based on cgroups.
I think you're looking for the `cgroup_ns` context which adds the inum
of the cgroup namespace as a context field.
This will give you the ID of the cgroup namespace but we don't have
contexts for cgroups themselves. It's probably something we would like
to have but there is no concrete plans on implementing this at the moment.
If this isn’t supported, are there any plans to add it in future
versions, such as 2.14?
For reference, I’m currently using LTTng 2.13 on Ubuntu 24.04 with
kernel 6.8.0-87-generic.
Cheers,
Amir
--
*Amirhossein Najafizadeh*
*PhD Student, Computer Science Department, Stony Brook University, N.Y.
File systems and Storage Lab (FSL)
