>  > while reducing kernel size of 30kB sounds good (and definitely it's worth
>  > of work), reducing .data and .bss segment size of system libraries could
>  > save such amount for EVERY process. for libc (x86):
>
> If a chunk of .data or .bss from a system library is not touched written
> to, then the area is shared with other programs.  It's copy-on-write, as
> well as demand-paged, so the behavior isn't really all that bad.

anyway pages are 4kB. if 1kB of that 60 will be ever used, it may be even
many pages as it's scattered