On Tue, Apr 19, 2022 at 1:45 PM Oswald Buddenhagen < oswald.buddenha...@gmx.de> wrote:
> On Mon, Apr 18, 2022 at 11:34:59AM +0200, Martin Clausen wrote: > >Looks to me like the time is spent on a gigantic number of the 4 > >operations I listed all for the All Mail folder. > > > as i expected, by far most time is spent receiving IMAP FETCH responses. > so the network is definitely the limiting factor, and it's an expected > effect of syncing 130k+ messages. to quote myself from a recent thread: > > >> the base imap protocol that mbsync uses isn't very efficient for > >> resyncs. a proper fix would require using the QRESYNC extension, but > >> that's a major project (also in the TODO). as a workaround, you can > >> do partial syncs, though it may be challenging to automate that > >> sufficiently to make it both reliable and convenient when working > >> with multiple clients. > > but note that gmail doesn't support QRESYNC anyway. it supports > CONDSTORE, for which i also have an TODO item, but that won't help you > anytime soon. > > so practically, you need to use --pull-new and --push, and do full syncs > only occasionally. > > note that you're syncing both "All Mail" and some labels (== virtual > folders), which causes duplicate work. for performance, it would be best > to exclude All Mail entirely, and sync only "views" that are currently > relevant. you may consider the MaxMessages option as well. > > Thank you so much for looking into this, and for the tips on how to work around. > > > _______________________________________________ > isync-devel mailing list > isync-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/isync-devel >
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