Re: Reducing kernel compilation time

[Stan Hoeppner <stan@hardwarefreak.com>]

On 9/24/2011 9:22 AM, Camaleón wrote:
> Hello,
>
> 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?

5 hours?  Did you say 5 hours?

I have a 10 year old dual Mendocino 550 machine with only 384MB of PC100 
that takes about 30 minutes to compile my custom kernels using make -j2.

I'd guess you're including the kitchen sink.  Don't build the hundreds 
of driver modules your machines won't ever use.  That is the key to 
reducing build time.

--
Stan