Extending this Linux packages example. What if some proprietary device driver
called X? This driver is not from Linux source package, but every update of
Linux will cause the need of rebuilding X's deb packages. Sources are
independent but deb packages of X depends on Linux's deb packages. If
After some consideration - maybe real life scenario will be better. Regard
Linux, Nvidia, ATI and some DVB-T dongle without driver in current kernel.
There will be 6 groups of users:
a) only Linux, (i=1)
b) Linux and Nvidia, (i=2)
c) Linux and ATI, (i=2)
d) Linux and DVB-T dongle, (i=2)
e)
Thanks for your bugreport and sorry for the late reply.
Your analysis is correct, the probability changed for dependent
packages.
However because of the way we seed the random number generator its less
of a issue in a lot of the practical cases. We use the (source package
name, update version,
Yeah, I forgot about this report. If (Pseudo)Random Number Generator is seeded
that way, then in most cases this will be fine, only in bad-luck cases (when
source packages are different but debs depends on each other) my analysis will
apply. The good news is that, even if this situation occurs,
The real probability distribution will be a sum of separate
distributions and will depend of fractions of user who installed i of n
packages. Below I pasted formula from LibO Math:
P(x)= sum from {i=1} to {n} a_i P_i(x) newline
0= a_i = 1 newline
a_i - a fraction of users who installed i packages
For normalized histograms:
figure(1)
hist(rand(1,10),10,1)
for i = 2:10
figure(i)
hist(max(rand(i,10)),10,1)
endfor
If we're upgrading kernel, than packages are:
linux-generic
linux-headers-generic
linux-image-generic
linux-libc-dev
linux-headers-version
