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From: Nathan Bossart <[email protected]>
To: Magnus Hagander <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: Bossart, Nathan <[email protected]>
Cc: Fujii Masao <[email protected]>
Cc: Justin Pryzby <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Mark Dilger <[email protected]>
Cc: Don Seiler <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: Estimating HugePages Requirements?
Date: Tue, 15 Mar 2022 15:44:39 -0700
Message-ID: <20220315224439.GA1133771@nathanxps13> (raw)
In-Reply-To: <CABUevExgoKMNveD5SvFWOYA4MQvPkDmGxY7DkVRASJED4gBYog@mail.gmail.com>
References: <[email protected]>
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	<Yi/[email protected]>
	<CABUevExgoKMNveD5SvFWOYA4MQvPkDmGxY7DkVRASJED4gBYog@mail.gmail.com>

On Tue, Mar 15, 2022 at 11:02:37PM +0100, Magnus Hagander wrote:
> I think we're talking about two different things here.
> 
> I think the "avoid extra logging" would be worth seeing if we can
> address for 15.

A simple approach could be to just set log_min_messages to PANIC before
exiting.  I've attached a patch for this.  With this patch, we'll still see
a FATAL if we try to use 'postgres -C' for a runtime-computed GUC on a
running server, and there will be no extra output as long as the user sets
log_min_messages to INFO or higher (i.e., not a DEBUG* value).  For
comparison, 'postgres -C' for a non-runtime-computed GUC does not emit
extra output as long as the user sets log_min_messages to DEBUG2 or higher.

> The "able to run on a live cluster" seems a lot bigger and more scary
> and not 15 material.

+1

-- 
Nathan Bossart
Amazon Web Services: https://aws.amazon.com

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