On Wed, Aug 11, 2021 at 11:03 PM Kevin Fenzi <kevin@xxxxxxxxx> wrote: > > On Wed, Aug 11, 2021 at 10:03:50PM +0200, Marek Marczykowski-Górecki wrote: > > Hi all, > > > > I think deltarpm is not really useful anymore: > > - there are very few drpm files in the repository, see for example: > > https://download.fedoraproject.org/pub/fedora/linux/updates/34/Everything/x86_64/drpms/ > > https://download.fedoraproject.org/pub/fedora/linux/updates/33/Everything/x86_64/drpms/ > > - those that actually are there, are mostly about small packages anyway > > - personally, I haven't seen it being used for a long time > > - there is also argument that people's connection bandwidth nowadays > > tends to be fast enough to make the package rebuilding actually > > slower than downloading the whole package (but that really vary between > > different installations) > > Yeah. ;( I actually wanted to bring up this topic a while ago, but then got side-tracked. In my experience, drpms have negligible effect on package downloads for updates. To add some anecdata, these are the stats from today's "dnf distro-sync" transaction on my laptop, with a few days' worth of updates+updates-testing changes: Install 4 Packages Upgrade 161 Packages Remove 3 Packages Total download size: 751 M [DRPM 1/3] python3-tqdm-4.61.1-1.fc34_4.62.0-1.fc34.noarch.drpm: done [DRPM 2/3] perl-Module-CoreList-5.20210620-1.fc34_5.20210723-1.fc34.noarch.drpm: done [DRPM 3/3] binutils-2.35.1-41.fc34_2.35.2-4.fc34.x86_64.drpm: done Delta RPMs reduced 750.9 MB of updates to 747.5 MB (0.4% saved) This about matches what I've been seeing on this laptop and my main machine for many months. Either there's 0-2% savings at most, or a few % of additional data downloads due to failed downloads or failed rpm reconstructions. I wonder why there's so few drpms in most transactions I see? Does this system not prioritize packages, like, those that are installed on all variants, or installed by default on Workstation? The way it is right now, I could turn drpms off entirely, and probably not change the download size at all (because savings are small and are cancelled out by failure cases), and save some CPU time. Is it really worth it keeping all that infrastructure for drpms around, if they doesn't actually provide any benefit wrt. amount of data to download, and actually increases CPU usage? Fabio _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
