Re: Improving Gnus speed

[Lars Magne Ingebrigtsen <larsi@gnus.org>]

Francis Moreau <francis.moro@gmail.com> writes:

> For example, I have a group which contains 1298 articles. Entering it
> lasts 9 seconds:
>
>     - 7 secs in the fetching process
>     - 2 secs in sorting + summary buffer generation

[...]

> I'm giving you the elp results when entering in the group containing
> 1298 articles, with all articles displayed:
>
> gnus-thread-total-score                                 21809       18.607898999  0.0008532211

elp is still claiming that this function is being called 21k times, and
that this takes 18 seconds.  Which sort of doesn't make much sense, since:

> gnus-group-select-group                                 1           10.66085      10.66085

This is surely the top-level function being called, so the 18 seconds
sorting should be counted here, too, but it isn't, which is why I was
wondering whether you were doing other things between each
elp-results... 

Anyway:

> gnus-get-newsgroup-headers-xover                        1           6.78624       6.78624

There's the seven seconds...

> gnus-summary-number-of-articles-in-thread               22361       3.2177489999  0.0001439000

And there's a totally crazy call number again.  That function should be
called (generally) once per displayed article in the summary buffer (if
you have that in your summary line format).  But it's called 10x the
number of times.

> gnus-dd-mmm                                             1301        0.9418810000  0.0007239669

I'm guessing you have a somewhat non-standard summary line format for
that function to show up, but at least it tallies up with the number of
articles in the group, somewhat.

> gnus-id-to-thread                                       21805       0.1913100000  8.773...e-06

Again, a totally ridiculous call number...

I'd suggest removing all Gnus customisations to find out what triggers
these weird call numbers.

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen