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From: Simon Josefsson <jas@extundo.com>
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Subject: Re: nnimap slowness
Date: Sat, 22 Mar 2003 04:51:29 +0100
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In-Reply-To: <uk7estcvr.fsf@boost-consulting.com> (David Abrahams's message
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David Abrahams <dave@boost-consulting.com> writes:

> Simon Josefsson <jas@extundo.com> writes:
>
>> David Abrahams <dave@boost-consulting.com> writes:
>>
>>> I have a fast connection here (10Mb/s cable modem) and my IMAP server
>>> seems perfectly snappy and responsive when I use other newsreaders,
>>> but GNUs is just painfully slow, especially when downloading a message
>>> with a large attachment.  A 1.6MB attachment can take minutes!
>>>
>>> Is there anything magical I can do to make this go faster?  I'd even
>>> settle for the mildly paranormal as long as it speeds things up!
>>
>> Is it downloading or article rendering that takes time?  See the
>> troubleshooting section in the manual for how to tell.
>
> What specifically are you referring to?  I don't see the words
> "downloading", "rendering", or "imap" in there.

I was referring to profiling Gnus to find out what part of it is
taking time (but it is most likely MIME decoding and displaying that
takes time, see below).

>> If downloading is slower than in other clients, something is buggy,
>
> It sure seems like downloading is the problem; the attachment isn't
> displayed except as a MIME button.

Ah, but the message is still copied around.  Collapsing it into a
button is only done at the final moment of display.  Yes, this is
inefficient.  Nobody has worked on fixing this yet though...