Re: Direct I/O

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Justin Pryzby <pryzby(at)telsasoft(dot)com>
Cc: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Dagfinn Ilmari Mannsåker <ilmari(at)ilmari(dot)org>, Christoph Berg <myon(at)debian(dot)org>, mikael(dot)kjellstrom(at)gmail(dot)com, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Direct I/O
Date: 2023-05-01 00:00:01
Message-ID: 2125851.1682899201@sss.pgh.pa.us
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Justin Pryzby <pryzby(at)telsasoft(dot)com> writes:
> On Sun, Apr 30, 2023 at 06:35:30PM +1200, Thomas Munro wrote:
>> What about a
>> warning message about that at startup if it's on?

> Such a warning wouldn't be particularly likely to be seen by someone who
> already didn't read/understand the docs for the not-feature that they
> turned on.

Yeah, I doubt that that would be helpful at all.

> Since this is -currently- a developer-only feature, it seems reasonable
> to rename the GUC to debug_direct_io, and (at such time as it's
> considered to be helpful to users) later rename it to direct_io.

+1

regards, tom lane

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