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Date: Mon, 8 Apr 2019 08:21:20 -0400
From: Rich Felker <>
Subject: Re: Profiling musl

On Mon, Apr 08, 2019 at 12:15:04PM +0200, Pascal Felber wrote:
> Dear all,
> Does anyone have experience with profiling musl? We are running into
> performance issues (after modifying some of the musl code) and would
> like to understand where the overheads come from, but profiling with
> gprof does not work and we have issues with valgrind. Any help will
> be greatly appreciated.

I would use perf(1). Making gprof work has been a very low priority
(and maybe non-starter if the stuff needed for support would be
invasive) since its model inherently perturbs the performance
properties of the code badly.


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