Hi Petr! > > For example, there are 8 secondaries (Mumbai, LosAngeles, Melbourne, > > Atlante, SaoPaulo...) to which the XFR took 2361 seconds. > > > > Are there some mechanisms in Bind that put multiple XFRs together into > a > > common stream? Or do you have any other ideas how it come that several > > XFRs are equally fast? > > Are you sure all these transfers were _actually_ running in parallel?
Yes. I checked the logs on the secondaries too and also these logs say that the XFR were finished at the same second. > I suspect it will boil down to some sort of configured limit like > transfers-out > transfers-in > transfers-per-ns > serial-query-rate > which cause some transfers to serialize and reduce parallelism. $ egrep 'serial-query-rate|transfers' * named.conf.options: serial-query-rate 500; named.conf.options: transfers-in 50; // number of total concurrent zone transfers from the masters to me named.conf.options: transfers-per-ns 50; // number of concurrent zone transfers per master from the masters to me named.conf.options: transfers-out 200; // number of concurrent zone transfers from me to my slaves regards Klaus -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
