Re: entering a group is slow

["Peter Münster" <pmlists@free.fr>]

On Fri, Jun 13 2014, Peter Münster wrote:

> On Fri, Jun 13 2014, Igor Sosa Mayor wrote:
>
>>> Entering a group is very slow on my system (several seconds, up to
>>> 15 seconds sometimes). Is this a know problem and do you know how to
>>> make it faster?
>>
>> how many messages are in the group?
>
> Often some hundreds (700-900) for example.
>
> And I've read http://gnus.org/manual/gnus_403.html#SEC546 :
>
> - gnus-fetch-old-headers is nil
> - gc-cons-threshold is 3500000
> - gnus-use-correct-string-widths is nil

My main group is "inbox", there are often only very few messages (< 10)
that are displayed in the summary buffer and it takes about 5 seconds to
enter the group.

After using `elp-instrument-package' I've found, that the sorting
functions are called a lot of times:

gnus-thread-sort-by-most-recent-date    1981     4.8174347399  0.0024318196
gnus-thread-latest-date                 3962     4.6299316569  0.0011685844

Because there are about 300 articles with the expirable-mark. These are
not shown in the summary buffer, but it seems, that they are sorted
nevertheless.

Is it possible to tell gnus, to not sort articles that won't be
displayed in the summary buffer?

TIA for any help,
-- 
           Peter