On Tue, Nov 27, 2018 at 7:01 PM Paul Frields <sticks...@gmail.com> wrote: > > On Tue, Nov 27, 2018 at 9:59 AM Owen Taylor <otay...@redhat.com> wrote: > > A lot of discussion about improving the compose process seem to end up > > with a "reality check" - that ideas have already been tried but don't > > work because of requirements a) b) c) d). You can't have the pony, but > > maybe if a lot of effort is put into it, you can have a faster rocking > > horse. > > > > If want to fundamentally improve the Fedora workflow we need compose > > ponies, we can't just have rocking horses! > > > > Perhaps it would make sense to leave the current 8-10 hour compose in > > place for the forseeable future, and work on a new system in parallel > > where the primary constraint is to be as fast as possible. Hopefully > > most problems with the slow compose will get sorted out in the fast > > composes, and the slow compose will become more reliable. Perhaps in a > > distant future, we can make the new system do everything > > Indeed, this is basically the investigation I've proposed. I also think > > > I don't know what the system would look like exactly, but you could > > imagine things like: > > > > * Composed of several micro-composes (micro-compose-services?) to > > avoid blocking on everything completing successfully. > > > > * Able to do speculative composes for CI > > > > * Either x86_64-only, or with decoupled architectures so that we can > > throw x86_64 hardware (or cloud resources) at it, and make it super > > fast. > > > > * No IO /mnt/koji during the compose - having a big network share be > > central to the process creates a performance bottleneck, makes it hard > > to move to the cloud, and potentially adds a lot of "noise" to > > figuring out what is going on where things are slow because of some > > other entirely different thing is goin gon. > > > > Add your own bullet points :-) > > I would like to redefine a couple working assumptions: > > * Big tools are unwieldy and inevitably silo knowledge. The people > behind them are often smart, hard-working, and care about great > results. But bedrock FOSS principles say we get more value from > rapidly iterating tools to which many people can/do contribute. We > should see if we can avoid big tools that solve everything. > > * Reproducibility is something we can better enforce at development > time than use time. It's pretty easy to pick one or more git heads at > a certain time (for a tool, a containerized environment, etc.). Let's > not get one hand tied behind our back at the outset via outmoded > assumptions.
That is not entirely true. A level of reproducibility is also at build time based on versions of other packages that the package has been built against. The versions of components that another component is built/composed against will greatly affect the reproducibility of a component and that information is not in git. Peter _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
