Manuel Bouyer writes:
> I noticed similar problems. For me it happens when building the boot floppies.
> I suspect it's a make issue, it seems make waits a very long time (several
> seconds) between the end of a subprocess and the start of the next one.

Yes, this does look like a make issue.  When it happened to me, I
saw make run about one job every five seconds.  "ps" showed the make
process waiting on "select", and looking at the source code of make,
there is just one select() call and it calls select with a timeout
argument of exactly 5 seconds.  I bet that's no coincidence.

Who would like to submit a PR?
-- 
Andreas Gustafsson, gson@gson.org