bug#28695: 26.0.60; Rendering lag spikes caused by double-buffering on Linux

[Eli Zaretskii]

> Cc: npostavs@users.sourceforge.net, bryan@bryan.sh, 28695@debbugs.gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Mon, 16 Oct 2017 01:55:54 +0300
> 
>    Children  Self   Comma  Shared Object     Symbol
>    0,03%     0,03%  emacs  libXext.so.6.4.0  [.] XdbeSwapBuffers
>    0,00%     0,00%  emacs  emacs             [.] XdbeSwapBuffers@plt

Hmm... so do you see any difference between these 2 scenarios in other
parts of the profiles?

Thanks.