>> As you wish. I thought that understanding the underlying performance model
>> with sequential writes written in chunks is important for the admin, and as
>> this guc would have an impact on performance it should be hinted about,
>> including the limits of its effect where large bases will converge to random
>> io performance. But maybe that is not the right place.
>
> I do agree that that's something interesting to document somewhere. But
> I don't think any of the current places in the documentation are a good
> fit, and it's a topic much more general than the feature we're debating
> here. I'm not volunteering, but a good discussion of storage and the
> interactions with postgres surely would be a significant improvement to
> the postgres docs.
I can only concur!
The "Performance Tips" chapter (II.14) is more user/query oriented. The
"Server Administration" bool (III) does not discuss this much.
There is a wiki about performance tuning, but it is not integrated into
the documentation. It could be a first documentation source.
Also the README in some development directories are very interesting,
although they contains too much details about the implementation.
There has been a lot of presentations over the years, and blog posts.
--
Fabien.