bug#64735: 29.0.92; find invocations are ~15x slower because of ignores

[Ihor Radchenko]

Eli Zaretskii <eliz@gnu.org> writes:

>> With emacs -Q, the results are similar in terms of absolute time spent
>> doing GC:
>> 
>> (("built-in" . "Elapsed time: 5.706795s (3.332933s in 304 GCs)")
>>  ("built-in no handlers" . "Elapsed time: 4.535871s (3.161111s in 301 GCs)")
>>  ("with-find" . "Elapsed time: 4.829426s (3.333890s in 274 GCs)"))
>
> Strange.  On my system, GC takes about 8% of the run time.  Maybe it's
> a function of how many files are retrieved?

Most likely.
(length (directory-files-recursively "/usr/src/linux/" "")) ; => 145489

My test is producing a very long list of files. 10 times for each test
and for each function variant.

-- 
Ihor Radchenko // yantar92,
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