Re: Improving spin-lock implementation on ARM.

On Tue, Dec 1, 2020 at 7:57 PM Zidenberg, Tsahi <tsahee(at)amazon(dot)com> wrote:
> > On 01/12/2020, 16:59, "Alexander Korotkov" <aekorotkov(at)gmail(dot)com> wrote:
> > On Tue, Dec 1, 2020 at 1:10 PM Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com> wrote:
> > > FWIW, here is an earlier discussion on the same (also added the
> > > proposal author here) :
>
> Thanks for looping me in!
>
> > >
> > > https://www.postgresql.org/message-id/flat/099F69EE-51D3-4214-934A-1F28C0A1A7A7%40amazon.com
> >
> >
> > Thank you for pointing! I wonder why the effect of LSE on Graviton2
> > observed by Tsahi Zidenberg is so modest. It's probably because he
> > runs the tests with a low number of clients.
>
> There are multiple possible reasons why I saw a smaller effect of LSE, but I think an important one was that I
> used a 32-core instance rather than a 64-core one. The reason I did so, was that 32-cores gave me better
> absolute results than 64 cores, and I didn't want to feel like I could misguide anyone.

BTW, what number of clients did you use? I can't find it in your message.

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Regards,
Alexander Korotkov