[ltt-dev] [RFC UST] Processes model

Stefan Hajnoczi stefanha at gmail.com
Tue Jan 18 05:25:56 EST 2011

On Mon, Jan 17, 2011 at 9:13 PM, David Goulet <david.goulet at polymtl.ca> wrote:
> I'm submitting a RFC about a "new daemon model" for UST.
> This is the *first* draft... so a lot of feedback will be appreciated for
> improvements and ideas!

At first glance I'm concerned about a root ustd daemon.  One of the
things I like about LTTng UST is that it's low on administration
overhead and configuration.  Putting a central service in place that
mediates access introduces a level of complexity that makes it harder
for unprivileged users who want to quickly trace something in an app
they are running or developing.

Perhaps offer a two-level approach:
1. You can directly trace processes that you have permissions for.  No
root and no system-wide daemon needed.
2. You can set up a system-wide daemon and get all the access control,
tracing over the network, etc benefits.

I will reread the RFC in more detail later in case I've missed the
answers to this.


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