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From: Adrian Klaver <[email protected]>
To: Rucha Kulkarni <[email protected]>
To: [email protected]
Subject: Re: Doubts regarding pg_freespacemap extension
Date: Tue, 18 Feb 2025 08:21:21 -0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAPsneqqHWWb4RxBFeViZAVx-CBMECinVTvQzrc6H7169Zay9Bw@mail.gmail.com>
References: <CAPsneqqHWWb4RxBFeViZAVx-CBMECinVTvQzrc6H7169Zay9Bw@mail.gmail.com>

On 2/17/25 07:12, Rucha Kulkarni wrote:
> Hi PostgreSQL Community,
> 
> While exploring the pg_freespacemap extension, I came across a few 
> doubts and would appreciate any insights or clarifications:
> 
>
> 3. Whenever I check the values for B-tree indexes, I observe all values 
> to be 0.

 From here:

https://www.postgresql.org/docs/current/pgfreespacemap.html

"For indexes, what is tracked is entirely-unused pages, rather than free 
space within pages. Therefore, the values are not meaningful, just 
whether a page is full or empty."



> 
> Regards,
> 
> Rucha Kulkarni
> 

-- 
Adrian Klaver
[email protected]

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