Richard Henderson <[email protected]> writes: > From: "Emilio G. Cota" <[email protected]> > > It's been superseded by the atomic helpers. > > The use of the atomic helpers provides a significant performance and > scalability > improvement. Below is the result of running the atomic_add-test > microbenchmark with: > $ x86_64-linux-user/qemu-x86_64 tests/atomic_add-bench -o 5000000 -r $r -n $n > , where $n is the number of threads and $r is the allowed range for the > additions. > <snip> > > For master I stopped measuring master after 8 threads, because there is little > point in measuring the well-known performance collapse of a contended lock. > > Signed-off-by: Emilio G. Cota <[email protected]> > Message-Id: <[email protected]> > Signed-off-by: Richard Henderson <[email protected]>
Reviewed-by: Alex Bennée <[email protected]> -- Alex Bennée
