bug#18522: 24.4.50; mapcar is very slow

[Peder O. Klingenberg]

On Fri, Feb 19 2016 at 16:15, Lars Ingebrigtsen wrote:

> Could somebody else also try running the benchmark form up there in a
> newly started Emacs and one that's been running for a while to see if
> they can reproduce this bug?

Reproducible for me, on a fairly old build from master.

GNU Emacs 25.0.50.1 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll bars) of 
2015-02-10 on luna

emacs -Q:
(0.486050254 62 0.14596531899999993)
(0.476148629 62 0.14965575099999995)
(0.48096619 62 0.15016140600000039)
(0.475289574 62 0.14931084599999966)

emacs:
(0.756362151 41 0.4092070400000001)
(0.705364164 40 0.36777845200000003)
(0.706183625 41 0.3791851149999994)
(0.709007708 40 0.37037735199999977)

emacs with 38 days uptime, lots of buffers, gnus running, etc:
(33.491108001 3 0.5502189609999277)
(33.388318264 2 0.3723178949999806)
(34.000763018 3 0.5643239880000124)

...Peder...
-- 
I wish a new life awaited _me_ in some off-world colony.