[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Will using make -j actually use multiple processor cores?
|
From: |
Paul Smith |
|
Subject: |
Re: Will using make -j actually use multiple processor cores? |
|
Date: |
Tue, 04 Nov 2014 10:29:34 -0500 |
On Tue, 2014-11-04 at 09:16 -0500, Brian R Cowan wrote:
> Process/thread scheduling is left to the OS.
>
> Child-makes and -j can be surprising. -j without a max # is "spawn as
> many
recipies in parallel as possible."
That's true.
> If you use -j4, the child makes only get
the -j and not the number.
> So, more threads could start than you expect.
That's not true.