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 <amirali.shambayati@gmail.com> wrote:
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-compilat...
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..