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Re: Parallel Seq Scan vs kernel read ahead - Mailing list pgsql-hackers

From Ranier Vilela
Subject Re: Parallel Seq Scan vs kernel read ahead
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Msg-id CAEudQArRXoNxtoBjcYQzKe7N+tP11OtcRhiirHwt9ikgiXWxEA@mail.gmail.com
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In response to Re: Parallel Seq Scan vs kernel read ahead  (Thomas Munro <thomas.munro@gmail.com>)
Responses Re: Parallel Seq Scan vs kernel read ahead
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Em qua., 20 de mai. de 2020 às 20:48, Thomas Munro <thomas.munro@gmail.com> escreveu:
On Thu, May 21, 2020 at 11:15 AM Ranier Vilela <ranier.vf@gmail.com> wrote:
> postgres=# set max_parallel_workers_per_gather = 0;
> Time: 227238,445 ms (03:47,238)
> postgres=# set max_parallel_workers_per_gather = 1;
> Time: 138027,351 ms (02:18,027)

Ok, so it looks like NT/NTFS isn't suffering from this problem.
Thanks for testing!
Maybe it wasn’t clear, the tests were done with your patch applied.

regards,
Ranier Vilela

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