On 2016-08-17 17:35:32 -0700, Peter Geoghegan wrote:
> On Wed, Aug 17, 2016 at 5:20 PM, Andres Freund <andres@anarazel.de> wrote:
> > libc isn't compiled with -fno-omit-frame-pointer (and even if, it uses
> > assembly without setup of the frame pointer), so frame pointer based
> > call graphs are wrong through libc. The attributions are based on
> > random stuff in the frame pointer at that point. You either need to use
> > dwarf or lbr to get accurate ones.
>
> Is it worth doing that here, and redoing the test, so that the glibc
> attributions are correct?
I'd say yes.