On Mon, Aug 8, 2011 at 4:25 PM, Javier Martinez Canillas <
martinez.javier@gmail.com> wrote:

On Sun, Aug 7, 2011 at 7:09 PM, Amirali Shambayati
[off-list ref] wrote:

quoted

Hi all,
Since I want to evaluate performance improvements by changing just one
file in kernel(noop-iosched) and compiling kernel is too much
time-consuming, I want to know that if I compile kernel for more than
one time, does it take similar time to first time?

I use following commands. If I don't use "make-kpkg clean" for next
times, does it just compile the files which have been modified or it
compile whole kernel package again?

make-kpkg clean
fakeroot make-kpkg --initrd --append-to-version=-some-string-here
kernel-image kernel-headers


Thanks for your help in advance,

--
Amirali Shambayati
Bachelor Student
Computer Engineering Department
Sharif University of Technology
Tehran, Iran

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Some time ago I wrote a blog entry about "Speeding up Linux kernel
compilation", hope it helps


http://martinezjavier.blogspot.com/2011/03/speeding-up-linux-kernel-compilation.html

Is allocating a big tmpfs and copying the entire kernel tree to it a good
idea?
It seems to take >4GB though.
If there was a way to quickly copy back the changes made to the disk, it
would work quite well..

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