On Sat, 24 Sep 2011 10:22:33 -0400 (EDT), Camaleón wrote:
>
> I had to compile the latest upstream kernel sources to make some
> debugging with my wifi drivers (from staging) and discovered that
> compilation took ~5 hours.
>
> That's much for testing purposes.
>
> Compilation takes place in a netbook governed by Intel's Atom N455 with 2
> GiB of RAM and I would like to reduce the compilation time.
>
> I'm using the same ".config" file I have for the current Debian stock
> kernel (to avoid missing some modules I may need) and just added
> "CONFIG_MATOM=y" but it takes almost the same time.
>
> I don't need nothing special, just to be able to boot the system, test
> the staging drivers and then remove/compile a new kernel again so wasting
> the less time in the process would be great :-)
>
> Any trick?
Hello, Camaleón.
I'm not familiar with the capabilities of your hardware, but if you have
multiple CPUs ("cores") available, and you're using kernel-package, you
can make use of the environment variable CONCURRENCY_LEVEL to set the
number of simultaneous compile tasks. For example,
CONCURRENCY_LEVEL=2 make-kpkg ...
if you have a dual-core processor. You seem to have enough RAM to support
that. Note that there is a patch you will need for kernel-package if
you're using a version 3 kernel. See my kernel-building web page for
details.
http://users.wowway.com/~zlinuxman/Kernel.htm
If you have a quad-core machine, you can set CONCURRENCY_LEVEL to 4.
--
.''`. Stephen Powell
: :' :
`. `'`
`-