On Wed, Nov 20, 2002 at 06:02:30PM -0800, David Schultz wrote: > Thus spake Tony Finch <[EMAIL PROTECTED]>: > > > > Most of the BSS is mmapped zero pages that are copy-on-write, so in simple > > programs they should be mostly shared. See rtld-elf/map_object.c > > Once those pages are written to, the kernel must fault in a fresh > zero-filled page. Since the BSS typically holds uninitialized > data, we can probably assume that the program is going to > initialize most of it at some point, so there will be very few > shared BSS pages.
I said "simple" to mean programs that don't use very much of libc and therefore shouldn't touch very much of libc's bss. Tony. -- f.a.n.finch <[EMAIL PROTECTED]> http://dotat.at/ SELSEY BILL TO LYME REGIS:SOUTH TO SOUTHEAST 6 OR 7 EASING SOUTH TO SOUTHWEST 4 OR 5 FOR A TIME THEN INCREASING SOUTH TO SOUTHWEST 5 OR 6, PERHAPS OCCASIONALLY 7. RAIN OR SHOWERS, OCCASIONALLY HEAVY. GOOD TO MODERATE. ROUGH. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
