--- "Bryan J. Smith" <b.j.smith at ieee.org> wrote: > On Tue, 2005-09-13 at 21:21 -0500, Les Mikesell > wrote: > > Yes, there is no argument that yum would have to > change. > > However it could be a small change. > > Ah ... no, it's _more_ than a "small change." > Simply timestamping and > tracking timestamps will _not_ do what you want. > > > Yes, but what you really want to do is give the > client > > the least he needs to make what it has into what > it > > wants. You are always going to be going forward > and > > clients that update regularly will always need > only > > the diff between the current and last prior RPM. > > But that adds to the start-up time. The more > meta-data you generate to > do what you want, the longer this stuff will take on > the client side. > > > If you work only 2 revs at a time there is no > difference. > > Can you guarantee this? > > > Yes, one file for the difference between any two > revs which > > is almost always what you want - or you should be > updating > > more often. If you need to repeat the process > with multiple > > steps, the client can easily calculate whether it > is better > > to collect multiple deltas and apply them or just > grab the > > complete version it wants. > > Again, this is not a "small change" like you think > it is. > > > So be sensible about what you keep around and make > the > > client fall back to existing procedure if the > delta > > it might use isn't there. > > Again, this is not a "small change." And you're > going to start > introducing loads at the server if you try to keep > transfer sizes down. > > > Keep only 1 or 2 delta/patch files for the latest > revs where > > the traffic will actually be happening and thus > reduced. In > > the unlikely event you want something else, use > the existing > > procedure. > > More subjective approaches. What happens if the > respositories don't do > what you want? Better yet, how can you ensure all > repositories are so > synchronized? > > I mean, I saw complaints about repositories not > offering the same > packages. It will only get worse when you start > timestamping, using > deltas, etc... > > > I didn't realize that you wouldn't call them > deltas unless > > you cram more than one in the same file. Do you > call the > > first one a patch, then change the name when you > append the > > next run? The piece everyone will want is > currrent-1->current > > so the most benefit would come from keeping that > in it's > > own file. > > Are you so sure? Sometimes there are more than one > update. In fact, > this still does not solve the problem of the fact > that repositories > change every few days, and gives you a way to > timestamp and resolve all > those changes. > > I think people are asking for the "holy grail" here > and calling it a > "small change" without thinking through the real > issues. A lot of what > I see above is _not_ "tied down" into a methodical > approach and more > like "subjective" and making the chances of > inconsistency even worse. > > > -- > Bryan J. Smith b.j.smith at ieee.org > http://thebs413.blogspot.com > ---------------------------------------------------------------------- > The best things in life are NOT free - which is why > life is easiest if > you save all the bills until you can share them with > the perfect woman > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > sir_funzone pulls out the shotgun and aims, calls the word pull, seeing the thread Re: [CentOS] Why is yum not liked by some? in his gunsite. Pulls the trigger and hears the load pop of the shotgun going off, hoping the sluge will hit its target. Whamo target sought and hopefully destroyed with exploding force that it is never seen again..... waiting to see if that little rascal has survived, sir_funzone reloads his shotgun and points it toward the direction of the thread Re: [CentOS] Why is yum not liked by some? hoping not to see it come alive again... Steven "On the side of the software box, in the 'System Requirements' section, it said 'Requires Windows or better'. So I installed Linux."