On Wed, May 13, 2015 at 04:09:18PM +0200, Denys Vlasenko wrote: > On 05/13/2015 12:43 PM, Ingo Molnar wrote: > > We only know that the net effect is +70 bytes. Does that come out of: > > > > - large fluctuations such as -1000-1000+1000+1070, which happens to > > net out into a small net number? > > > > - or does it come from much smaller fluctuations? > > > > So to make an informed decision we need to know those details. > > Fair enough. Let's investigate. > > I produced a list of functions with their sizes from each vmlinux, > and diffed them: > > $ nm --size-sort vmlinux | sed 's/\.[0-9]*.*/.NNN/' >vmlinux.nm > $ nm --size-sort vmlinuxO2.before | sed 's/\.[0-9]*.*/.NNN/' > >vmlinuxO2.before.nm > $ diff -u vmlinuxO2.before.nm vmlinux.nm | grep -v '^[ @]' >vmlinux.nm.dif
FWIW, scripts/bloat-o-meter is a nice tool to examine the size differences of two vmlinux images. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
