From: MichaelDBA <MichaelDBA@sqlexec.com>
To: Jeff Janes <jeff.janes@gmail.com>
Cc: Chris Hoover <chrish@aweber.com>
Cc: Ron <ronljohnsonjr@gmail.com>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: New PG14 server won't start with >2GB shared_buffers
Date: Sat, 25 Feb 2023 09:53:45 -0500
Message-ID: <a4638ea7-5e3f-a78b-8729-f440b52b0d54@sqlexec.com> (raw)
In-Reply-To: <CAMkU=1xiP6vAL+Lc74+4f=wLkgj2cV4snBxvMyhDk+pr9z9Ddg@mail.gmail.com>
References: <A446608A-42A3-4CBB-BD45-47BE009B0029@aweber.com>
<4b583c4a-022f-f452-c0c8-0a932a6ee411@gmail.com>
<C6285AA6-5195-4C8B-A599-401845EFD174@aweber.com>
<4a41387e-516e-0782-6110-89c05a99d020@sqlexec.com>
<CAMkU=1xiP6vAL+Lc74+4f=wLkgj2cV4snBxvMyhDk+pr9z9Ddg@mail.gmail.com>
I sincerely apologize. I should have read this stuff more closely.
Jeff Janes wrote on 2/25/2023 9:51 AM:
> On Sat, Feb 25, 2023 at 9:05 AM MichaelDBA <MichaelDBA@sqlexec.com
> <mailto:MichaelDBA@sqlexec.com>> wrote:
>
> I just don't get what all this fuss is about trying to get PG up
> on the smallest possible values for shared_buffers, especially
> considering this person has 1 TB of memory?
>
>
> The fuss is why he can't make it bigger. No one wants to make it as
> small as possible.
>
> Chris Hoover wrote on 2/25/2023 8:07 AM:
>>
>> Here is shmall:
>> kernel.shmall = 17179869184
>
>
> How did that get so small? On my Ubuntu18.04, it comes out of the box
> at 2^64 - 1. Why would anyone have set about making it smaller? Now
> the current value should still be big enough, but I wonder what else
> got changed while someone was monkeying with things that didn't need
> to be monkeyed with.
>
> Cheers,
>
> Jeff
Regards,
Michael Vitale
Michaeldba@sqlexec.com <mailto:michaelvitale@sqlexec.com>
703-600-9343
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Cc: MichaelDBA@sqlexec.com, jeff.janes@gmail.com, chrish@aweber.com, ronljohnsonjr@gmail.com, pgsql-admin@lists.postgresql.org
Subject: Re: New PG14 server won't start with >2GB shared_buffers
In-Reply-To: <a4638ea7-5e3f-a78b-8729-f440b52b0d54@sqlexec.com>
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