On Fri, Aug 6, 2010 at 2:30 PM, Christian Robottom Reis <k...@linaro.org> wrote:

> By touch I think you mean install, upgrade or remove, and of these I
> guess upgrade is the more common case; do you think it is?

I think you're right.  This hits the end user more than first-time
installation - install and remove normally imply an explicit request
from the user for something to happen, in which case the user expects
to have to wait a bit; upgrades are housekeeping that may happen (and
use power and potentially annoy the user) at any time (ish).

> Would the overhead be significant even if the tarball wasn't compressed?
> I don't understand enough about tar's concatenate and delete performance
> to risk a guess.

tar's default internal blocksize is 512 bytes, so there would still be
overhead but it would be less.  I don't think tar really supports
random access though, since tar files are sequential and monolithic;
having many tarballs instead of just one may be better.

---Dave

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