Re: A slowness in the Agent

[Kevin Greiner <kgreiner@xpediantsolutions.com>]

Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

> I just cvs uppped a bit here, and Gnus suddenly was much slower than
> before.  After peeking around quite a bit, the most likely culprit is
> `gnus-agent-read-agentview', which now calls
> `gnus-uncompress-sequence' about 9K times for me.  Which takes a
> while.
>
> I've inlined the call, which helps a bit, but I think the fundamental
> problem might be that `gnus-agent-read-agentview' tries too hard.
> The Emacs reader is really very fast, and almost any compression one
> tries to do in Emacs Lisp is bound to be slower than just calling
> `read' on a huge whopping list.
>
> Or I may be poking around in the wrong place.

Well, that compression has been in use for over a year now so I don't
see why it would suddenly make gnus much slower.  If you truely think
that it is an issue, reverting back to No Gnus 0.1 will give you a
version of gnus-agent-read-agentview that can be configured to turn
the compression off.  Hmmm...  I wonder if that is what you had done;
configured your gnus to disable the compression.

For the record, I didn't add the compression to save disk space but to
improve performance.

What bothers me is that your seeing 9K calls to
gnus-agent-read-agentview.  That seems excessive unless you have 9K
groups.

Kevin