> > I think this one really needs to be done with the userspace cache
> > thrashing microbenchmarks.
>
> If a benefit cannot be show on some sort of semi-realistic workload,
> it's probably not worth it, IMHO.
The main advantage of cache coloring normally is that benchmarks
should get stable results. Without it a benchmark result can vary based on
random memory allocation patterns.
Just having stable benchmarks may be worth it.
I suspect the benefit will vary a lot based on the CPU. Your caches may
have good enough associativity. On other CPUs it may make much more difference.
-Andi
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