bug#25618: 25.1.91; More precise limit for tagging expensive tests

[Tino Calancha <tino.calancha@gmail.com>]

On Sat, 4 Feb 2017, Noam Postavsky wrote:

> On Sat, Feb 4, 2017 at 8:42 AM, Tino Calancha <tino.calancha@gmail.com> wrote:
>>
>> Prefer set a numeric limit of seconds than using the word 'few'.
>>
>> For instance, in my box the test `cl-seq-test-bug24264' in
>> test/lisp/emacs-lisp/cl-seq-tests.el
>> takes 7 s.
>> With an explicit numeric threshold is easier to decide whether this test
>> must be tagged as expensive or not.
>>
>> In following patch i define a few as 2-3 seconds.  Other people might
>> prefer 4-5 or even higher.
>> Please, suggest a proper value to consider a test as expensive.
>
> Is it worth specifying this so precisely? The time elapsed depends on
> the speed of the computer you run it on (also, whether Emacs is
> compiled with optimization or not). A test that takes 2 seconds on
> your computer might easily take 5 seconds on mine.
When i run the test suite, the test mentioned before takes significantly
longer than the others.  I feel like it could be considered as 
slightly expensive.
After reading 'some few seconds' in CONTRIBUTE i am still in doubt on 
that.  It could be more clear.