Re: Gnus' speed

[David Engster <deng@randomsample.de>]

Karl Kleinpaste <karl@kleinpaste.org> writes:
> David Engster <deng@randomsample.de> writes:
>> * Scoring in general is slow. For maximum speed, one should omit
>>   scoring completely.
>
> I am surprised that anyone would want to do away with scoring; its
> utility is so high in terms of determining what is/isn't worth reading
> that, even if slow, it is too valuable to ignore.
>
> That said, I don't find it slow.  I even have an "all" scorefile along
> with the usual per-group scorefiles, and I don't perceive any special
> penalty from using scoring.

It depends on the scoring you do. If you score against the whole head or
even the body, scoring becomes incredibly slow since Gnus has to request
the head/body, resp.

For example, I have a group with a score file like

(("head"
  ("somestring" nil nil s)))

and reading its ~940 articles takes ages:

gnus-score-headers                                                            1           40.348502     40.348502
gnus-score-body                                                               1           40.346746     40.346746
gnus-request-head                                                             938         40.214296000  0.0428723837

Scoring just against the basic headers like from/to/subject probably
does not have this problem.

-David