Re: [RFC PATCH 0/5] BLOG: per-task logging contexts with Ceph consumer

[Steven Rostedt]

On Sat, 25 Oct 2025 13:50:39 +0300
Alex Markuze <amarkuze@xxxxxxxxxx> wrote:

> First of all, Ftrace is for debugging and development; you won't see
> components or kernel modules run in production with ftrace enabled.
> The main motivation is to have verbose logging that is usable for
> production systems.

That is totally untrue. Several production environments use ftrace. We
have it enabled and used in Chromebooks and in Android. Google servers
also have it enabled.


> The second improvement is that the logs have a struct task hook which
> facilitates better logging association between the kernel log and the
> user process.
> It's especially handy when debugging FS systems.

So this is for use with debugging too?

> 
> Specifically we had several bugs reported from the field that we could
> not make progress on without additional logs.

This still doesn't answer my question about not using ftrace. Heck,
when I worked for Red Hat, we used ftrace to debug production
environments. Did that change?

-- Steve