Am 2010-06-19 14:11, schrieb Roman Kyrylych: > On Thu, Jun 3, 2010 at 20:31, Mihael Pranjić <[email protected]> wrote: >> Is it just me or are most of the arch mirrors outdated/slow-syncing? I >> sync every hour and its always the same. When there is a KDE update or >> so all the mirrors get outdated. This was a problem with the old >> mirroring scheme, and to me it seems to be the same now. Is this a >> problem with few Tier-1 mirrors or is archlinux.org still overstrained >> when there are huge updates? > > Not all mirrors switched to multi-tier scheme yet, > however these are limited in bandwidth compared to tier1 mirrors, > so syncing from tier 1 mirror should not be slow. > According to mirror status page [1] the delay for manyof mirrors is > not that bad, > however I did not check these numbers during major repo updates. > >> I am ready to set up rsync and allow 10-20 mirrors (start with 10 and >> see how it works with the bandwidth) in Europe, preferred Germany - if >> this can help us get our mirrors synced fast even with such updates. > > We already have 2 tier1 mirrors in Germany and 1 in UK, > so I don't know if there is a need for another one, > so feedback from potential tier2 mirrors would be welcome. > >> I think a bleeding-edge linux distribution should definitely not have >> issues with slow syncs. When there is a security update or an update >> like KDE it should be out there as fast as possible, no matter which >> mirror you use. > > Do you suggest to increase sync time to less than 1 hour? > Perhaps we could try that.
Yip, I think syncing more often could improve the situation, since it does not really make much more traffic. It's rather a problem if you sync only once a day so the main mirror has to deal with more traffic in less time. Syncing every 15 minutes (on a random minute) could even improve performance since we would sync 100mb now, 100 later, instead of having a dozen servers syncing 200mb at the same time. I could also be wrong. However, another result of this (if applied to all mirrors) is that some probably don't sync from the tier-2 mirrors. Say server D syncs from C, C syncs from B, B syncs from A and they do it only once in an hour, could result in a huge time gap between commit on server A (archlinux.org) and sync on server D. In fact, I think this is also important because of our mirroring scheme, concerning that we don't sync from archlinux.org any more - so syncing could take 30 minutes until a new file gets from archlinux.org to an actual mirror from where users update. As I am tired I may have written weird stuff, ignore it please. > To every mirror admin subscribed to this list: > please voice your opinion on the issues raised in this mail. > Since you are the guys that provide the service > - it is important for us to provide you with possibilities to make it better. > > > [1] https://www.archlinux.de/?page=MirrorStatus;orderby=delay;sort=asc > _______________________________________________ arch-mirrors mailing list [email protected] http://mailman.archlinux.org/mailman/listinfo/arch-mirrors
