On Thu, 30 Jun 2011, Raphaël Hertzog wrote:
> It's not dpkg-query --control-path that is slow.
No, it actually is quite slow, when you have to do it separately for every
installed package:
$ time for p in $(dpkg-query -W -f='${PackageSpec} '); do \
dpkg-query --control-path "$p" md5sums; done >/dev/null
real 2m34.050s
user 2m8.480s
sys 0m19.140s
That accounts for basically all of the time the debsums hook is now using.
Besides, it’s the only thing that Stéphane’s patch changed.
> It's dpkg-query --listfiles (aka dpkg -L).
But debsums doesn’t have to do that for every installed package.
Anders
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