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From: Michael Paquier <[email protected]>
To: Bossart, Nathan <[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: Fri, 27 Aug 2021 15:46:35 +0900
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CAHJZqBBLHFNs6it-fcJ6LEUXeC5t73soR3h50zUSFpg7894qfQ@mail.gmail.com>
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On Wed, Aug 11, 2021 at 11:23:52PM +0000, Bossart, Nathan wrote:
> I think BootstrapModeMain() makes the most sense.  It fits in nicely
> with the --check logic that's already there.  With v3, the following
> command can be used to retrieve the amount of shared memory required.
> 
>         postgres --output-shmem -D dir
> 
> While testing this new option, I noticed that you can achieve similar
> results today with the following command, although this one will
> actually try to create the shared memory, too.

That may not be the best option.

> IMO the new option is still handy, but I can see the argument that it
> might not be necessary.

A separate option looks handy.  Wouldn't it be better to document it
in postgres-ref.sgml then?
--
Michael


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