Re: dpkg suggestion
On Thu, 27 Aug 1998, Jules Bean wrote:
> > > pkg-nodep
> > >
> > > Edward> 22:21:03 $ pkg-nodep > /dev/null
> > > Edward> 22:21:29 $
> > > Edward> it is a bit slow?
> It has been suggested many times before, and lots of people have agreed.
This check is about 20 lines of code using the APT library, something like
for (pkgCache::PkgIterator I = Cache.begin(); I.end() == false; I++)
pkgCache::DepIterator Dep = I.RevDependsList();
bool Used = false;
for (; Dep.end() == false; Dep++)
if (Dep->Type == pkgCache::Dep::Depends &&
Dep.ParentPkg()->InstState != pkgCache::State::NotInstalled &&
Dep.ParentPkg()->InstState != pkgCache::State::ConfigFiles)
Used = true;
if (Used == false)
cout << "Package " << I.Name() << " is not depended on by anything" << endl;
And that will run in very short time, probably less than a half second if
the database is already in ram, in the 3-5 second time range if it needs
to completely rebuild things.
I think I got parse time down to <2s on my 486/50 for the 3Meg database
set when the files are in ram.. The old apt is 7 times slower than the new