Re: [RFC][PATCH 00/14] function_graph: Rewrite to allow multiple users

[Peter Zijlstra]

On Wed, Nov 21, 2018 at 08:27:08PM -0500, Steven Rostedt wrote:
> Well the fuction graph tracer is arguably the strongest of the tracers.
> It shows both the entrance and exit of a function, can give the timings
> of a function, and shows the execution of the code quite nicely.
> 
> But it has one major flaw.
> 
> It can't let more than one user access it at a time.

The reason I 'never' use it is performance, it _sucks_.. I've never ran
into the multi-user issue.

So while I don't think the rewrite is bad, this argument here is.