Config parameters explanation...

[Exedore]

Hi people.

What means every parameter after we launch ./Config?

For exemple, what means?:

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Would you like to compile as a hub or as a leaf?
Type Hub to select hub and Leaf to select leaf.
[Hub] ->

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What listen() backlog value do you wish to use?  Some older servers
have problems with more than 5, others work fine with many more.
[5] ->

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How many buffer pools would you like?
This number will be multiplied by MAXSENDQLENGTH.
[18] ->

That number [18]
What is?
KB, meters, kilograms, pages, cats, dogs.

How we use those informations?

Thank you.

[Stealth]

The items in the [] are the default values for those settings.

The [18] tells you what it is "This number will be multiplied by MAXSENDQLENGTH.", so if you set the default 18, it'd be 18 * MAXSENDQLENGTH

[Exedore]

Yes, but what is?, how this parameters impacts in the performance of the server or network?
For exemple:
I know that this parameter

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How far back do you want to keep the nickname history?

This is for WHOWAS command.
And the number? Is in hours?, seconds?

Is there any document that explain all this with details and examples?

Thank you

[Exedore]

Official documentation is used to setup the config file once the software is compiled and installed.
But this is related to the pre-compiling options.

Thank you

[Stealth]

Yes, but what is?, how this parameters impacts in the performance of the server or network?

These options may increase or decrease such things as memory, CPU time, and bandwidth used by the IRCd. When Unreal runs nothing is stored on disk.

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How far back do you want to keep the nickname history?

This is for WHOWAS command.
And the number? Is in hours?, seconds?

It's a history, so naturally the number would be entries in the history.

Is there any document that explain all this with details and examples?

Nope. You're pretty much supposed to read and understand the basic English in the question. If you don't know the answer, the default is used.