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From: =?UTF-8?Q?Julien_=C3=89LIE?= <iulius@nom-de-mon-site.com.invalid>
Newsgroups: news.software.nntp
Subject: Re: Improving trn: LISTGROUP with no arguments vs. ...?
Date: Wed, 6 Nov 2024 20:18:20 +0100
Organization: Groupes francophones par TrigoFACILE
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Hi Richard,

> On my server (admittedly, nntp isn't as important to my ISP as it was
> in the 90s, so they probably have it running on an old machine for the
> last few customers that actually read news -- like me), it takes
> multiple minutes to get all the articles for, say, comp.arch.

Could you try to send a LISTGROUP command to fr.soc.politique with trn 
connected to my news server? (news.trigofacile.com, available in reading)
It would be interesting to know the result.  There may also be a 
bandwidth issue?


> When I watch it with strace it's about one article per second and the
> read buffer is so empty that it's literally reading just one response
> line per call to read.

Very slow for just an article number (not the contents of a whole article).


> My long-term goal for trn is to move more towards asynchronous I/O
> instead of synchronous I/O.  So I'm thinking LISTGROUP with low and
> high used from your newsrc in order to fetch the likely never seen
> before article numbers on the blocking path and then asynchronously
> fetch whatever is needed in the background once you've entered the
> group.  There's nothing wrong with doing a LISTGROUP for all the
> remaining article numbers asynchronously in the background.

It looks like a good move to do.
Notably if you send an OVER command after the LISTGROUP, and it takes 
the same amount of time to run...

-- 
Julien ÉLIE

« I had some words with my wife, and she had some paragraphs with me. »
   (Sigmund Freud)