Re: Should io_method=worker remain the default?

From: Nathan Bossart <nathandbossart(at)gmail(dot)com>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Jeff Davis <pgsql(at)j-davis(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Should io_method=worker remain the default?
Date: 2025-09-08 20:14:01
Message-ID: aL85CeasM51-0D1h@nathan
Views: Whole Thread | Raw Message | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Mon, Sep 08, 2025 at 01:43:45PM -0400, Andres Freund wrote:
> 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.

I think we need to do something similar for numeric.c.

diff --git a/src/backend/utils/adt/meson.build b/src/backend/utils/adt/meson.build
index dac372c3bea..7d0688ddb87 100644
--- a/src/backend/utils/adt/meson.build
+++ b/src/backend/utils/adt/meson.build
@@ -1,5 +1,14 @@
# Copyright (c) 2022-2025, PostgreSQL Global Development Group

+numeric_backend_lib = static_library('numeric_backend_lib',
+ 'numeric.c',
+ dependencies: backend_build_deps,
+ kwargs: internal_lib_args,
+ c_args: vectorize_cflags,
+)
+
+backend_link_with += numeric_backend_lib
+
backend_sources += files(
'acl.c',
'amutils.c',
@@ -61,7 +70,6 @@ backend_sources += files(
'network_gist.c',
'network_selfuncs.c',
'network_spgist.c',
- 'numeric.c',
'numutils.c',
'oid.c',
'oracle_compat.c',

--
nathan

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Robert Haas 2025-09-08 20:14:47 Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)
Previous Message Nathan Bossart 2025-09-08 19:59:36 Re: GetNamedLWLockTranche crashes on Windows in normal backend