On Thu, Mar 18, 2004 at 09:59:06PM +0100, Sam Ravnborg wrote: > On Thu, Mar 18, 2004 at 12:37:44AM +0100, Jasper Spaans wrote: > > On Tue, Mar 16, 2004 at 10:48:30PM +0100, Sam Ravnborg wrote: > > > > > > It speeds up the building process > > > > somewhat, and shouldn't introduce unwanted behaviour. > > > > > > Can I get some figures for speed-up? > > > > Sure; I just ran a few tests for a complete compile on my machine, only > > other activity was me typing on some gnome-terms. In all cases the diskcache > > has been primed and hot. > > Looks promising. > Can you try the same on a fully build kernel. > This is the typical scenario. Make a few small changes, and build the kernel. > > Another good benchmark is to do: > time rm mm/slab.o && make > > In this way you simulate an edited file, and relink the kernel.
Yep, just tested the rm mm/slab.o case; repeated both tests 5 times. (The other one is a bit difficult to execute, but if that one really is needed, it is possible) Summary of the results: Comparing user-time: run 1 2 3 4 5 AVG[*] SD[*] Vanilla 12.46 12.40 12.46 12.48 12.49 12.467 0.1155 Patched 10.99 10.92 10.96 10.95 10.97 10.960 0.1000 and system-time: run 1 2 3 4 5 AVG[*] SD[*] Vanilla 2.07 2.14 2.18 2.08 2.05 2.097 0.0379 Patched 1.98 2.04 2.03 2.07 2.13 2.047 0.0208 So even in this simple case the patched version looks a lot faster.. there's no grep in there, right? [*] Average and stddev using 3 median values Cheers, -- Jasper Spaans http://jsp.vs19.net/ 23:57:30 up 9892 days, 15:44, 0 users, load average: 3.48 3.97 4.06 -... .- -.. --. . .-. -... .- -.. --. . .-. -... .- -.. --. . .-. ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ kbuild-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/kbuild-devel
