On Tue, 14 Jan 2025 08:38:37 -0800 Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
> > > Well, a 50% reduction in a 0.0000000001% overhead ain't much.
> >
> > I wish the overhead was that low :)
> >
> > I ran more comprehensive testing on Pixel 6 on Big, Medium and Little cores:
> >
> > Overhead before fixes Overhead after fixes
> > slab alloc page alloc slab alloc page alloc
> > Big 6.21% 5.32% 3.31% 4.93%
> > Medium 4.51% 5.05% 3.79% 4.39%
> > Little 7.62% 1.82% 6.68% 1.02%
>
> Hi Andrew,
> I just noticed that you added the above results to the description of
> this patch in mm-unstable: 366507569511 ("alloc_tag: skip
> pgalloc_tag_swap if profiling is disabled") but this improvement is
> mostly caused the the other patch in this series: 80aded2b9492
> ("alloc_tag: avoid current->alloc_tag manipulations when profiling is
> disabled"). If this is not too much trouble, could you please move it
> into the description of the latter patch?
No probs, done, thanks.
