| From: | Simon Riggs <simon(dot)riggs(at)enterprisedb(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Michail Nikolaev <michail(dot)nikolaev(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, reshkekirill <reshkekirill(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Slow standby snapshot |
| Date: | 2022-11-30 06:53:19 |
| Message-ID: | CANbhV-HjD4Y=VOpKh8WVeg52cGqZ5sQvP=9tkePMPrWSGwUyug@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, 29 Nov 2022 at 20:46, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> I wrote:
> > That seems like a fairly bad idea: it will add extra contention
> > on ProcArrayLock, and I see no real strong argument that the path
> > can't get traversed often enough for that to matter. It would
> > likely be better for KnownAssignedXidsCompress to obtain the lock
> > for itself, only after it knows there is something worth doing.
>
> Since we're running out of time in the current commitfest,
> I went ahead and changed that, and made the cosmetic fixes
> I wanted, and pushed.
That is a complete patch from multiple angles; very happy here.
Thanks for a great job.
--
Simon Riggs http://www.EnterpriseDB.com/
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