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From: Daniel Gustafsson <[email protected]>
To: Nathan Bossart <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Peter Eisentraut <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: add --no-sync to pg_upgrade's calls to pg_dump and pg_dumpall
Date: Thu, 9 May 2024 21:58:37 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <20240509193425.GA3219615@nathanxps13>
References: <20240503171348.GA1731524@nathanxps13>
	<[email protected]>
	<20240508183850.GA2824188@nathanxps13>
	<[email protected]>
	<[email protected]>
	<20240509193425.GA3219615@nathanxps13>

> On 9 May 2024, at 21:34, Nathan Bossart <[email protected]> wrote:
> 
> On Thu, May 09, 2024 at 09:03:56AM +0900, Michael Paquier wrote:
>> +1.  Could there be an argument in favor of a backpatch?  This is a
>> performance improvement, but one could also side that the addition of
>> sync support in pg_dump[all] has made that a regression that we'd
>> better fix because the flushes don't matter in this context.  They
>> also bring costs for no gain.
> 
> I don't see a strong need to back-patch this, if for no other reason than
> it seems to have gone unnoticed for 7 major versions.  Plus, based on my
> admittedly limited testing, this is unlikely to provide significant
> improvements.

Agreed, this is a nice little improvement but it's unlikely to be enough of a
speedup to warrant changing the backbranches.

--
Daniel Gustafsson







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