On Friday 25 May 2007 17:05:17 Roman Divacky wrote: > On Fri, May 25, 2007 at 04:02:47PM +0200, Stefan Ehmann wrote: > > On Friday 25 May 2007 11:51:46 Roman Divacky wrote: > > > hi > > > > > > I just noticed that > > > spravci ~# ls -l /boot/kernel*/kernel > > > -r-xr-xr-x 1 root wheel 3389971 May 18 12:03 > > > /boot/kernel.old/kernel* -r-xr-xr-x 1 root wheel 5211345 May 25 > > > 11:47 /boot/kernel/kernel* > > > > > > ie. after gcc42 import the kernel size increased roughly by 60% thats > > > a little too much. is there any forgotten option or something that > > > makes the kernel grow so big? > > > > While I also see an increase, it's not that much. > > > > GENERIC from today's current, also compiled with gcc34 from ports (I had > > to delete two gcc options in sys/conf/kern.mk): > > > > gcc34: 6530916 > > gcc42: 7352560 > > gcc34 -Os: 6074468 > > gcc42 -Os: 10058032 > > yes, thats it! I also used -Os. it looks like this occurs only with -Os > optimization level. > > can someone else confirm this? and/or possibly explain this? -Os seems to do more inlining than -O. Maybe this is a gcc bug, we use strange options for the buildkernel or who knows what. If I use INLINE_LIMIT=600, I get a more reasonable sized kernel (600 is the gcc default, /sys/conf/kern.mk sets it to 8000). But it's still larger than the -O compile. If I further lower INLINE_LIMIT to 50: -Os: 5876816 -O: 7154096 This numbers finally look sane for a -Os build. Doing this is probably not a good idea but maybe this points to the cause of the size increase.Received on Sat May 26 2007 - 08:48:40 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:11 UTC