> You do around 441 DNS queries/second. A single database connection > would therefore not be able to support your needs (given DNSSEC).
We are currently running with 3 receiver-threads and 3 distributor-threads. We have tried every combination of 1, 3 and 4 of each of these parameters without much effect. Running on a single receiver-thread increases the latency with several milliseconds, however, the problem seems harder to trigger. Having set the number of signing-threads to 4 has increased overall performance, but did not have any effect on the issue. > Can you enable graphs as described on https://blog.powerdns.com/2014/ > 12/11/powerdns-graphing-as-a-service/ ? This will allow us to see what > is going on. They are added as `pdns.wns{1..3}`. It takes some time to get back to steady-state behavior. > dnsgram may also have written a file for you with dropped queries, can > you check if anything shows up there? The list contains mostly between 6 and 20 retries for somewhere around 16000 domains. Some other domains are between 60 and 120 retries, mostly AAAA and one ANY. It does not hint in the direction of a specific domain or query type. On 24/07/2018 14:46, bert hubert wrote: > On Tue, Jul 24, 2018 at 02:22:08PM +0200, Martijn Reening wrote: >> We are running PowerDNS 4.1.3 and have tested against MySQL 5.1.73 en >> PostgreSQL 10.4. It runs on CentOS 6.9, tested with both kernel versions >> `2.6.32-696.20.1.el6.x86_64` and `4.15.13-x86_64-linode106`. > Thanks! > >> 1.32192 millisecond/lookup >> Retrieved 31554 records, did 10000 queries which should have no match >> Packet cache reports: 0 hits (should be 0) and 0 misses > > You do around 441 DNS queries/second. A single database connection would > therefore not be able to support your needs (given DNSSEC). > > Can you enable graphs as described on > https://blog.powerdns.com/2014/12/11/powerdns-graphing-as-a-service/ > ? This will allow us to see what is going on. > >> 99.43% of questions answered within 32.00 msec (3.52%) >> 99.52% of questions answered within 64.00 msec (0.09%) >> 99.65% of questions answered within 256.00 msec (0.12%) >> 99.86% of questions answered within 1024.00 msec (0.21%) > > So when it works, it is great, it appears. > > dnsgram may also have written a file for you with dropped queries, can you > check if anything shows up there? > > Bert > _______________________________________________ > Pdns-users mailing list > Pdns-users@mailman.powerdns.com > https://mailman.powerdns.com/mailman/listinfo/pdns-users > -- Regards, Martijn Reening _______________________________________________ Pdns-users mailing list Pdns-users@mailman.powerdns.com https://mailman.powerdns.com/mailman/listinfo/pdns-users
