On Sat, Jul 07, 2018 at 06:18:41AM -0400, Matthew Miller wrote:
> On Sat, Jul 07, 2018 at 06:04:20AM -0400, Charalampos Stratakis wrote:
> > Not sure if that is possible for getting official signed builds for
> > those arch's.
>
> Could whatever output from the benchmark build be saved in a file and
> added as a separate source file?
With normal PGO hardly, because the *.gcda files need to match exactly
the sources (so any time you'd change anything in the sources, you'd need to
drop all the (on the side?) *.gcda files).
Anyway, the packages that take many hours to days to build on the extremely
slow architectures (arm/aarch64 :( ) aren't the only packages that would
benefit from PGO, e.g. building bash, or findutils etc. with PGO with
training on some reasonable typical workloads is very helpful too.
I think e.g. OpenSUSE does that much more often than our packages.
Jakub
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