Subject: Re: bug#50877: 28.0.50; Gnus: nnimap backend is extremely slow to initialise new groups

From: Lars Ingebrigtsen <[email-masked]>
Date: Wed, 29 Sep 2021 08:18:06 +0200

Eric Abrahamsen <[email-masked]> writes:

> I'm cc'ing Lars and Stefan Kangas, who are the most "involved" here. The
> benchmarks are gruesome:

Yeah, sounds like that commit has to be reverted.

> Probably still worth a dedicated function for Gnus? (Or a rewrite of
> `seq-difference'...)

Rewriting it using the same trick that the Gnus version does (i.e., a
hash table) might be nice, but it does use more memory, so I'm not sure
that's a general solution.  Perhaps there should be a separate version
of seq-difference.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no