| From: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com> |
| Cc: | Jakub Wartak <jakub(dot)wartak(at)tomtom(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Kirill Reshke <reshke(at)double(dot)cloud>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Use fadvise in wal replay |
| Date: | 2022-06-22 10:56:20 |
| Message-ID: | 8837E79D-2648-4372-BEE4-A11240F76491@yandex-team.ru |
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| Lists: | pgsql-hackers |
> On 22 Jun 2022, at 13:26, Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com> wrote:
>
> Then I'd guess that your speedup is due to speeding up the first several Mb's in many files opened
I think in this case Thomas' aproach of prefetching next WAL segment would do better. But Jakub observed opposite results.
Best regards, Andrey Borodin.
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