Re: [PATCH v4 4/4] powerpc/64s: enable MMU_LAZY_TLB_SHOOTDOWN

[Andrew Morton]

On Sat,  5 Jun 2021 11:42:16 +1000 Nicholas Piggin <npiggin@xxxxxxxxx> wrote:

> On a 16-socket 192-core POWER8 system, a context switching benchmark
> with as many software threads as CPUs (so each switch will go in and
> out of idle), upstream can achieve a rate of about 1 million context
> switches per second. After this patch it goes up to 118 million.

Nice.  Do we have a feel for the benefit on any real-world workloads?

Could any other architectures benefit from these changes?