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From: AIX PG user <[email protected]>
To: [email protected]
Cc: AIX PG user <[email protected]>
Subject: Re: AIX support
Date: Thu, 16 Oct 2025 15:28:00 +0000
Message-ID: <176062848036.68507.311595310346050481.pgcf@coridan.postgresql.org> (raw)
In-Reply-To: <[email protected]>
References: <CY5PR11MB63928CC05906F27FB10D74D0FD322@CY5PR11MB6392.namprd11.prod.outlook.com>
	<[email protected]>

Hi Peter,
Thank you for your comments.

We’ve had a few discussions in the past regarding the changes related to the
spin lock. Some of those conversations stemmed from this thread:
        "https://www.postgresql.org/message-id/95a44be0-b2f8-464a-8984-771d892b1cac%40iki.fi";
The earlier assembly code was generic across the PPC platform. However, based
on previous discussions, we transitioned to using GCC-specific routines to
enhance platform independence and maintain generality.

These are the comments I have added, let me know if you need more info here.
    +/* On PPC, use the compiler provided Built-in functions for atomic memory
    + * exchange operations.
    + */

For reference, here are some benchmark statistics we gathered earlier:
       "https://www.postgresql.org/message-id/CY8PR15MB5602EB54EFE30D4C21F061BEDB722%40CY8PR15MB5602.namprd1...;

I'll run some more benchmarking on this sync_lock and submit the results.
Meanwhile, it would be helpful if you and your team could take a look at the remaining changes.

Thank you,
Sriram.

The new status of this patch is: Needs review

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