<br><br><div class="gmail_quote">On Mon, Aug 8, 2011 at 4:25 PM, Javier Martinez Canillas <span dir="ltr"><<a href="mailto:martinez.javier@gmail.com">martinez.javier@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
On Sun, Aug 7, 2011 at 7:09 PM, Amirali Shambayati<br>
<div class="im"><<a href="mailto:amirali.shambayati@gmail.com">amirali.shambayati@gmail.com</a>> wrote:<br>
</div><div><div></div><div class="h5">> Hi all,<br>
> Since I want to evaluate performance improvements by changing just one<br>
> file in kernel(noop-iosched) and compiling kernel is too much<br>
> time-consuming, I want to know that if I compile kernel for more than<br>
> one time, does it take similar time to first time?<br>
><br>
> I use following commands. If I don't use "make-kpkg clean" for next<br>
> times, does it just compile the files which have been modified or it<br>
> compile whole kernel package again?<br>
><br>
> make-kpkg clean<br>
> fakeroot make-kpkg --initrd --append-to-version=-some-string-here<br>
> kernel-image kernel-headers<br>
><br>
><br>
> Thanks for your help in advance,<br>
><br>
> --<br>
> Amirali Shambayati<br>
> Bachelor Student<br>
> Computer Engineering Department<br>
> Sharif University of Technology<br>
> Tehran, Iran<br>
><br>
> _______________________________________________<br>
> Kernelnewbies mailing list<br>
> <a href="mailto:Kernelnewbies@kernelnewbies.org">Kernelnewbies@kernelnewbies.org</a><br>
> <a href="http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies" target="_blank">http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies</a><br>
><br>
<br>
</div></div>Some time ago I wrote a blog entry about "Speeding up Linux kernel<br>
compilation", hope it helps<br>
<br>
<a href="http://martinezjavier.blogspot.com/2011/03/speeding-up-linux-kernel-compilation.html" target="_blank">http://martinezjavier.blogspot.com/2011/03/speeding-up-linux-kernel-compilation.html</a><br>
</blockquote><div><br></div><div>Is allocating a big tmpfs and copying the entire kernel tree to it a good idea?</div><div>It seems to take >4GB though. </div><div>If there was a way to quickly copy back the changes made to the disk, it would work quite well.. </div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> </blockquote></div>