Sat, 26 Nov 2005

ipkg versus dpkg

On the maemo-developers list, people have been arguing about the advantages of ipkg versus dpkg. Hopefully I can show rather than explain why we (the folks prefer ipkg.

I have Debian 2.2 on a server and Familiar 6.2 on a handheld. Since we're talking about using either dpkg or ipkg on a jffs2 filesystem, all space consumption is given as a compressed tarball. Here is the space consumed by the package manager's overhead for installed packages and for available packages against ipkg and dpkg.

packages size bytes/package
ipkg total 378K
ipkg available 939 317K 388
ipkg installed 147 61K 415
dpkg total 10620K
dpkg available 15272 8660K 567
dpkg installed 301 1860K 6180

Here's how I got these numbers:

ipkg total is:
tar cfz - /usr/lib/ipkg | wc -c
ipkg available is:
tar cfz - /usr/lib/ipkg/lists | wc -c
ipkg packages installed is:
ipkg status | grep ^Package: | wc -l
ipkg available packages is:
ipkg list | wc -l
dpkg total is:
tar cfz - /var/lib/dpkg | wc -c
dpkg available is:
tar cfz - /var/lib/dpkg/available* | wc -c
dpkg packages installed is:
grep '^Status: install ok installed' /var/lib/dpkg/status | wc -l
dpkg available packages is:
grep '^Status:' /var/lib/dpkg/status | wc -l

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