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Re: Gnus limit: opening huge group

From: Eric Abrahamsen
Subject: Re: Gnus limit: opening huge group
Date: Fri, 20 Nov 2020 10:37:47 -0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Kevin Shell <> writes:

> Hello Gnus users.
> When I try to open very huge newsgroup with
> C-u <Enter>
> and request fetching all the news messages
> Gnus behaves badly,
> the CPU makes very loud noise and Gnus can't open the group.
> The Gnus's fetching speed compares with neomutt is relatively slow,
> is the probelm with Emacs lisp VS C?
> Noemutt can open huge group with header cache,
> but Gnus just can't open huge group.

Is this an nntp server, or some other backend? You mention newsgroups,
which sounds like nntp, but also neomutt, which sounds like mail. Not
that I'm going to have much of a solution for you, but I do feel like
nntp handles large groups without too much trouble. Even if it takes a
while, it shouldn't spin up your fans. If it's maildir, Gnus does
currently have trouble with large message stores, mostly because it is
building the header cache and that is very slow/is done inefficiently/is
plagued by gremlins.

Someoneā„¢ will get around to fixing that eventually, but for the time
being it is slow.


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