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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
Cc: Andy Fan <zhihuifan1213@163.com>
Cc: David Rowley <dgrowleyml@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: Make printtup a bit faster
Date: Mon, 04 May 2026 09:09:44 -0400
Message-ID: <185759.1777900184@sss.pgh.pa.us> (raw)
In-Reply-To: <fgiz2skezdgomtipzrbafokaylkr346z75gfnmbhpk3gkmmr3j@q5526zdy4c27>
References: <87wmjzfz0h.fsf@163.com>
	<CAApHDvrBNA-QRsbn-SJyRAsywjHCNenfcbi14c3O3c7=OimQ8Q@mail.gmail.com>
	<87bk1aj2go.fsf@163.com>
	<CAApHDvqHthJb6baDhgTE5T4RLW6nEX=r239EYmpjfg=Wq5CqQA@mail.gmail.com>
	<877bpk7dyg.fsf@163.com>
	<117986.1777869518@sss.pgh.pa.us>
	<fgiz2skezdgomtipzrbafokaylkr346z75gfnmbhpk3gkmmr3j@q5526zdy4c27>

Andres Freund <andres@anarazel.de> writes:
> FWIW, I've experimented fixing this overhead before, and what I did was to
> pass an optional context via the fcinfo, and output / send functions could use
> memory allocated via that optional context object, rather than doing it
> allocating in CurrentMemoryContext.  For the send functions that looks
> reasonably clean, given that it already deals with a stringinfo. For out
> functions it's a bit uglier, but still somewhat acceptable.

Hmm, yeah, that could be a route to building a new optional API
without causing compatibility problems everywhere.

			regards, tom lane

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