| From: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | Gilles Darold <gilles(at)darold(dot)net>, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Anastasia Lubennikova <a(dot)lubennikova(at)postgrespro(dot)ru>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: MultiXact\SLRU buffers configuration |
| Date: | 2022-02-19 05:34:36 |
| Message-ID: | 3130B767-FEB7-4F18-AE90-DD95B4367316@yandex-team.ru |
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| Lists: | pgsql-hackers |
> 8 апр. 2021 г., в 17:22, Thomas Munro <thomas(dot)munro(at)gmail(dot)com> написал(а):
>
> Thanks! I chickened out of committing a buffer replacement algorithm
> patch written 11 hours before the feature freeze, but I also didn't
> really want to commit the GUC patch without that. Ahh, if only we'd
> latched onto the real problems here just a little sooner, but there is
> always PostgreSQL 15, I heard it's going to be amazing. Moved to next
> CF.
Hi Thomas!
There's feature freeze approaching again. I see that you are working on moving SLRUs to buffer pools, but it is not clear to which PG version it will land. And there is 100% consensus that first patch is useful and helps to prevent big issues. Maybe let's commit 1'st step without lifting default xact_buffers limit? Or 1st patch as-is with any simple technique that prevents linear search in SLRU buffers.
Best regards, Andrey Borodin.
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