Subject: Re: bug#14781: coding system changes cause make check to hang in icalendar tests

From: Glenn Morris <[email-masked]>
Date: Mon, 08 Jul 2013 21:46:35 -0400

Stefan Monnier wrote:

>> number of tests run / passed / failed to be accurate. Running them in
>> separate Emacs's would allow them to run in parallel, which would be
>> faster, but might be confusing?
>
> The time to run each test tends to be small, so the overhead of starting
> a separate Emacs session for each one may dwarf the potential speed up
> from parallel execution, unless you have hundreds of cores.

I was meaning one Emacs per file, not per test.
I get about a factor of 2 speed-up on 4 cores this way.
The main issue holding it back is the wildly varying length of time that
each test file takes (the file-notify ones are slow for me).