Re: [Qemu-devel] make check speed

[Fam Zheng]

On Wed, 08/23 10:35, Thomas Huth wrote:
> Is it safe nowadays to run "make check -j4" for example? Last time I
> tried (maybe 1 or 2 years ago), there were still issues since some tests
> were using hard-coded temporary file names, so the parallel tests were
> disturbing each other, for example...

We really should fix them.

Last year I wanted to get some speed up in patchew's "make check" jobs so I
tried this:

https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg07713.html

On my laptop it can save 50% time as shown in the commit message, unfortunately
the patch didn't get enough traction, and I've since then rarely used -j in
"make check" command lines (what?!).

Fam