Re: [Pdns-users] General DNS questions...
On Thu, Apr 07, 2011 at 10:14:31PM -0400, Mohamed Lrhazi wrote: I hope you guys don't mind a couple of non pdns specific questions... For once ;-) - When you declare 2 or 3 NS records for your domain, does the order of those names correlate with their usage? by that I mean can I expect a bigger percentage of traffic to go to ns1, compared to ns2? No, this is perfectly distributed. - How does that load translate in practice when you declare three, and how about four or five? do these extras even get used at all? They do. - What free tools are there to use to test the latency, response quality, and stress load, a DNS server? Response quality can be determined against a 'reference' implementation using dnsreplay http://doc.powerdns.com/analysis.html Latency can be measured using dnsscope described on the same page. Alternatively, for resolvers within PowerDNS there is also the tool 'dnsbulktest' (undocumented, only available from Subversion) which can consume the Alexa 'top 1 million' list, available from http://www.alexa.com/topsites and check their resolution status. Stress load can also be generated using the excelent dnsperf and resperf tools from Nominum, http://www.nominum.com/resources/measurement-tools Good luck! Bert ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
Re: [Pdns-users] General DNS questions...
On 08/04/2011 09:01, bert hubert wrote: - What free tools are there to use to test the latency, response quality, and stress load, a DNS server? If you consider choosing to go with PDNS authoritative server, there is a built in web-server that can give you performance/load statistics of the nameserver: heres an example of the stats you can expect, from one of my slaves: Uptime: 75.1 days Queries/second, 1, 5, 10 minute averages: 2.9, 3.11, 3.15. Max queries/second: 8.8 Cache hitrate, 1, 5, 10 minute averages: 0%, 0%, 0% Backend query cache hitrate, 1, 5, 10 minute averages: 0%, 0%, 0% Backend query load, 1, 5, 10 minute averages: 8.68, 9.33, 9.44. Max queries/second: 53 Total queries: 22829639. Question/answer latency: 0ms kalpesh -- Victory is changing the hearts of your opponents by gentleness and kindness.- Saladin ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
Re: [Pdns-users] General DNS questions...
Very much appreciated. Thanks all. On Fri, Apr 8, 2011 at 3:19 AM, kalpesh thaker kalp...@webdevworld.com wrote: On 08/04/2011 09:01, bert hubert wrote: - What free tools are there to use to test the latency, response quality, and stress load, a DNS server? If you consider choosing to go with PDNS authoritative server, there is a built in web-server that can give you performance/load statistics of the nameserver: heres an example of the stats you can expect, from one of my slaves: Uptime: 75.1 days Queries/second, 1, 5, 10 minute averages: 2.9, 3.11, 3.15. Max queries/second: 8.8 Cache hitrate, 1, 5, 10 minute averages: 0%, 0%, 0% Backend query cache hitrate, 1, 5, 10 minute averages: 0%, 0%, 0% Backend query load, 1, 5, 10 minute averages: 8.68, 9.33, 9.44. Max queries/second: 53 Total queries: 22829639. Question/answer latency: 0ms kalpesh -- Victory is changing the hearts of your opponents by gentleness and kindness.- Saladin ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
