On Thu, Jul 07, 2022 at 08:13:52PM -0000, Christian Hergert wrote:
> Sysprof has modular data collection backends, and not everything
> requires linking against libunwind.
> 
> For those not familiar with Sysprof, or profiling the desktop at
> large, generally a single program is not the problem. The performance
> problems often exist across a number of processes. That can be anything
> from a library used by multiple applications which cumulatively waste
> resources, IPC across programs, thundering herds when files on disk
> change, GPU usage, CPU frequency scaling, memory bandwidth, RAPL, etc.

That problem's not unique to the desktop space, it applies across
any non-trivial usage of the OS, whether down at the base infrastructure
level, or over at server applications too. IOW, don't think of 'sysprof'
as only a tool for the desktop developers, what you describe is broadly
applicable to any and all. Profiling on Linux is indeed an exercise in
frustration much of the time, and recently I find myself turning to
sysprof more than other options for analysing problems around the virt 
stack.

With regards,
Daniel
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