bug#18407: Strange problem with Emacs and Auctex on retina macbook-pro

[Konrad Podczeck]

Load a (longer) latex file. Enable interactive mode in Auctex and compile the 
file. Initiating the compilation via the menu or via shortcut works fine, as 
expected. However, if the run is started via the toolbar icon, then the 
compilation may become very slow: in the window showing the progress of 
compilation, some lines appear, then the progress suddenly stops for some 
moment, the some progress is shown, then again there is break, and so on, so 
that, in effect, the compilation run may take more than five seconds, compared 
with 0.5 seconds if the run is initiated via shortcut or menu.

Actually, the problem has a machine  specific aspect: it appears on my new 
retina macbook-pro, bot not on the ordinary desktop mac-pro which I have at 
work, both having the latest MacOS.

But the problem also has a GNU-Emacs-specific aspect, and in particular seems 
not to be an Auctex problem: The problem does not appear at all with Auctex and 
the Emacs Mac Port by Yamamoto Mitsuharu.

Konrad Podczeck