Horton

Re: Should io_method=worker remain the default?

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Jeff Davis <pgsql@j-davis.com>
Cc: pgsql-hackers@postgresql.org
Date: 2025-09-08T17:43:45Z
Lists: pgsql-hackers 
Hi,

On 2025-09-05 16:07:09 -0700, Jeff Davis wrote:
> On Fri, 2025-09-05 at 13:25 -0700, Jeff Davis wrote:
> > As an aside, I'm building with meson using -Dc_args="-msse4.2 -Wtype-
> > limits -Werror=missing-braces". But I notice that the meson build
> > doesn't seem to use -funroll-loops or -ftree-vectorize when building
> > checksums.c. Is that intentional? If not, perhaps slower checksum
> > calculations explain my results.

Yes, that's an oversight.


> Attached a patch. I'm not sure if it's the right way to do things, but
> the resulting compiler command seems right to me.
> 
> It doesn't affect my tests in this thread much, but it seems best to be
> consistent with autoconf.

Yes, we should do this - the patch looks good to me.

Greetings,

Andres Freund

Commits

  1. meson: Build numeric.c with -ftree-vectorize.

  2. meson: build checksums with extra optimization flags.