Re: [LSF/MM/BPF TOPIC] Multi-sized THP performance benchmarks and analysis on ARM64

[David Hildenbrand <david@redhat.com>]

On 04.04.24 20:57, Christoph Lameter (Ampere) wrote:
> On Mon, 1 Apr 2024, Jonathan Cameron wrote:
> 
>> Sounds like useful data, but is it a suitable topic for LSF-MM?
>> What open questions etc is it raising?
> 
> 
> mTHP is new functionality that will require additional work to support
> more use cases. It is also unclear at this point in what usecases mTHP is
> useful and where no benefit can so far be seen. Also the effect of
> coalescing multiple PTE entries into one TLB entry is new to MM
> (CONT_PTE).
> 
> Ultimately it would be useful to have mTHP support also provide larger
> blocksize capabilities for filesystem etc etc. mTHP needs to mature and an
> analysis of the arguable a bit experimental state of affairs can help a
> lot in getting there.

Right, something like that (open items, missed use cases, requirements, 
ideas, etc,.) would be a better (good!) fit.

Pure benchmark results, analysis and recommendations are great. But 
likely a better fit for a (white) paper, blog post, 
less-discussion-focused conference.

-- 
Cheers,

David / dhildenb