Thanks for the information Bert! That sounds legit. Following your advice I will run some more benchmarks :)
Florent 2016-09-12 14:18 GMT+02:00 bert hubert <[email protected]>: > Florent, > > The story is, PowerDNS Recursor makes a sweep every so many packets to find > out if there are timeout conditions. > > So on a loaded recursor, you might get very accurate timeouts even below > 500ms. > > Can you redo your tests with traffic load? > > Bert > > On Thu, Sep 08, 2016 at 03:03:58PM +0200, Florent Krieg wrote: > > Hmmm sorry to spam, doesn't seem relevant, we're using a more recent > > version... > > Investigation still going on... > > > > 2016-09-08 15:00 GMT+02:00 Florent Krieg <[email protected]>: > > > > > Ok, that may be > > > > > > *Make timeouts for queries to remote authoritative servers configurable > > > with millisecond granularity. In addition, the old code turned out to > > > consider the timeout expired when the integral number of seconds since > 1970 > > > increased by 1 - which on average is after 500ms. This might have > caused > > > spurious timeouts! New default timeout is 1500ms. See network-timeout > > > setting for more details. Code in commit 1402.* > > > > > > :) > > > Florent > > > > > > 2016-09-07 18:18 GMT+02:00 Florent Krieg <[email protected]>: > > > > > >> Hello everybody, > > >> > > >> Just wanted to know if there was any lower limit to the > network-timeout > > >> config param on the recursor? > > >> > > >> I have a situation where I want to setup in advance a zone forward to > > >> nameservers not already created in my network, and to avoid long > queries I > > >> wanted to setup for instance network-timeout to like 20ms on our > recursors. > > >> > > >> I have found however that setting this param to less than 500ms is > > >> useless, as it seems to reach its lower value at 500ms. Is that > expected ? > > >> > > >> Thanks in advance. > > >> Best regards > > >> Florent > > >> > > > > > > > > > _______________________________________________ > > Pdns-users mailing list > > [email protected] > > https://mailman.powerdns.com/mailman/listinfo/pdns-users > >
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