Re: Emdebian minimal RootFS
Bernhard Fischer <rep.dot.nop@gmail.com> [070508]:
> On Mon, May 07, 2007 at 10:34:06PM +0100, Wookey wrote:
> >On 2007-05-07 21:55 +0100, Neil Williams wrote:
> >> I wrote a little script to try to calculate any missing dependencies,
> >> add up the download and installation sizes and compare with Debian.
> >> These are the results (with a few comments):
> >>
> >
> >> Using Debian versions (without accounting for any extra dependencies
> >> that the Debian packages would require):
> >> Debian Install total=30Mb
> >> Debian Download total=10Mb
> >>
> >> Our versions (with libgcc1 and libstdc++6 to make an installable set):
> >> Emdebian Install total=15Mb
> >> Emdebian Download total=5Mb
> >> (the majority of that is libc6)
> >>
> >> To be able to install the packages from Debian, this set is necessary:
> >> busybox base-files cdebconf dpkg apt libstdc++6 libc6 base-passwd
> >> initscripts login module-init-tools passwd sysvinit sysv-rc libgcc1
> >> libpopt0 libgcc1 gcc-4.1-base mount libselinux1 awk lsb-base
> >> libpam-modules libpam0g coreutils debian-archive-keyring libatk1.0-0
> >> libcap1 gnupg libldap2 libdb4.3 libusb-0.1-4 libgnutls13 gpgv
> >> libgcrypt11 makedev libgpg-error0 liblzo1
> >>
> >> Those would bump the set up to:
> >> Debian Install total=47Mb
> >> Debian Download total=17Mb
> >>
> >> vs
> >> Emdebian Install total=15Mb
> >> Emdebian Download total=5Mb
> >>
> >> So, overall, almost a 33% reduction.
> >
> >That's actually a 68% reduction. The size is 32% of the old size. :-)
> >
> >And in fact, can you actually make a busybox-based debian rootfs in
> >practice - I don't think the dependencies will allow it?
>
> My usual comfortable rootfs (without a compiler, though), is about 5Mb,
> i fear that the dependencies would make this considerably bigger.
> mount, makedev awk, login, dpkg, coreutils, passwd sound a little bit
> redundant since busybox is supposed to be able to replace all of them,
What should be done is to replace those packages with a busybox-minimal
package.
Busybox is the default in all embedded custom distribs.
--
Benjamin Henrion <bhenrion@ffii.org>
FFII Brussels - +32-484-566109 - +32-2-4148403
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