On Wed, Jun 17, 2026 at 05:01:04PM +0200, Mateusz Guzik wrote:
> On Wed, Jun 17, 2026 at 03:23:54AM -0700, Breno Leitao wrote:
> > Measured it to _just be sure_, 1-byte ping-pong (perf bench sched pipe -s
> > 1):
> >
> > baseline: 2.674 usecs/op
> > patched: 2.710 usecs/op (+1.3%, within run-to-run noise)
> >
>
> Can you try this:
I've tested this change, but the results show no real measurable
improvement beyond measurement noise.
patched + your change: ~2.66 usecs/op (-1.7%, within noise)
In my experience, branch hints haven't proven particularly effective, at
least that was the case when I worked on PowerPC some time ago.
