Re: doc: explain pgstatindex fragmentation - Mailing list pgsql-hackers

From Peter Eisentraut
Subject Re: doc: explain pgstatindex fragmentation
Date
Msg-id d755840a-7209-49d1-a2fa-94f0a0e5796d@eisentraut.org
Whole thread Raw
In response to Re: doc: explain pgstatindex fragmentation  (Bertrand Drouvot <bertranddrouvot.pg@gmail.com>)
List pgsql-hackers
On 24.01.25 15:41, Frédéric Yhuel wrote:
> 
> 
> On 1/24/25 14:58, Laurenz Albe wrote:
>> On Fri, 2025-01-24 at 13:34 +0000, Bertrand Drouvot wrote:
>>> + Since indexes have a default fillfactor of 90, this should be 
>>> around 0.9 for
>>> + newly built indexes
>>>
>>> I think 0.9 should be replaced by 90 (that's the actual kind of 
>>> output we'd get).
>>>
> 
> Damn! I missed that one too...
> 
>>> But having said that, I'm not sure we should mention those 90 stuff 
>>> because it
>>> depends of the amount of data indexed (I mean if the index has a very 
>>> few
>>> leaf pages, say < 5, then it's easy to be << 90 since it's an 
>>> average). That's
>>> probably not the majority of indexes though so maybe just nuance the 
>>> sentence a
>>> bit.
>>
>> Sorry about the 0.9.
>>
>> Perhaps the wording could be more careful: ... this should be around 
>> 90 for
>> most newly built indexes of non-neglectable size.
>>
> 
> It looks good to me (apart from the typo). v4 attached

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