Tamer Mohamed NOC engineer LinkdotNet
On Tue, Aug 30, 2011 at 6:55 AM, Mark Andrews <ma...@isc.org> wrote: > > In message > <CAAKgOtgoifGPNEpHtX7++w=cze1dpxx2degq1ppkz18dpuf...@mail.gmail.com>, > TMK writes: >> Dears, >> >> Probably this the thousand time you get these question. but our bind server >> have slow response time for the non-cached entries. >> >> I have run dig with +trace option and below is the result >> >> ; <<>> DiG 9.8.0-P2 <<>> @127.0.0.1 www.google.com +trace >> ; (1 server found) >> ;; global options: +cmd >> . 2013 IN NS i.root-servers.net. >> . 2013 IN NS g.root-servers.net. >> . 2013 IN NS l.root-servers.net. >> . 2013 IN NS m.root-servers.net. >> . 2013 IN NS d.root-servers.net. >> . 2013 IN NS b.root-servers.net. >> . 2013 IN NS k.root-servers.net. >> . 2013 IN NS j.root-servers.net. >> . 2013 IN NS c.root-servers.net. >> . 2013 IN NS a.root-servers.net. >> . 2013 IN NS h.root-servers.net. >> . 2013 IN NS e.root-servers.net. >> . 2013 IN NS f.root-servers.net. >> ;; Received 228 bytes from 127.0.0.1#53(127.0.0.1) in 1 ms >> >> com. 172800 IN NS a.gtld-servers.net. >> com. 172800 IN NS b.gtld-servers.net. >> com. 172800 IN NS c.gtld-servers.net. >> com. 172800 IN NS d.gtld-servers.net. >> com. 172800 IN NS e.gtld-servers.net. >> com. 172800 IN NS f.gtld-servers.net. >> com. 172800 IN NS g.gtld-servers.net. >> com. 172800 IN NS h.gtld-servers.net. >> com. 172800 IN NS i.gtld-servers.net. >> com. 172800 IN NS j.gtld-servers.net. >> com. 172800 IN NS k.gtld-servers.net. >> com. 172800 IN NS l.gtld-servers.net. >> com. 172800 IN NS m.gtld-servers.net. >> ;; Received 492 bytes from 199.7.83.42#53(l.root-servers.net) in 175 ms >> >> google.com. 172800 IN NS ns2.google.com. >> google.com. 172800 IN NS ns1.google.com. >> google.com. 172800 IN NS ns3.google.com. >> google.com. 172800 IN NS ns4.google.com. >> ;; Received 168 bytes from 192.5.6.30#53(a.gtld-servers.net) in 250 ms >> >> www.google.com. 604800 IN CNAME www.l.google.com. >> www.l.google.com. 300 IN A 209.85.148.106 >> www.l.google.com. 300 IN A 209.85.148.104 >> www.l.google.com. 300 IN A 209.85.148.147 >> www.l.google.com. 300 IN A 209.85.148.99 >> www.l.google.com. 300 IN A 209.85.148.103 >> www.l.google.com. 300 IN A 209.85.148.105 >> ;; Received 148 bytes from 216.239.34.10#53(ns2.google.com) in 225 ms >> >> >> >> we are running bind version "BIND 9.8.0-P2" on CentOS release 5.6 (Final) >> >> the process is running as mutlithreaded and consuming total of 60% of cpu >> utilization. >> >> do we have network issue or performance bottleneck. >> >> engtmk > > To better match what a nameserver does, what does dig +trace +dnssec show? > > dig +dnssec +trace www.google.com > > Mark > -- > Mark Andrews, ISC > 1 Seymour St., Dundas Valley, NSW 2117, Australia > PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org > Hi Mark, here is the output of the command dig @127.0.0.1 www.google.com +trace +dnssec ; <<>> DiG 9.8.0-P2 <<>> @127.0.0.1 www.google.com +trace +dnssec ; (1 server found) ;; global options: +cmd . 3600000 IN NS F.ROOT-SERVERS.NET. . 3600000 IN NS A.ROOT-SERVERS.NET. . 3600000 IN NS C.ROOT-SERVERS.NET. . 3600000 IN NS J.ROOT-SERVERS.NET. . 3600000 IN NS B.ROOT-SERVERS.NET. . 3600000 IN NS K.ROOT-SERVERS.NET. . 3600000 IN NS E.ROOT-SERVERS.NET. . 3600000 IN NS D.ROOT-SERVERS.NET. . 3600000 IN NS G.ROOT-SERVERS.NET. . 3600000 IN NS L.ROOT-SERVERS.NET. . 3600000 IN NS M.ROOT-SERVERS.NET. . 3600000 IN NS I.ROOT-SERVERS.NET. . 3600000 IN NS H.ROOT-SERVERS.NET. ;; Received 255 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms com. 172800 IN NS f.gtld-servers.net. com. 172800 IN NS m.gtld-servers.net. com. 172800 IN NS g.gtld-servers.net. com. 172800 IN NS h.gtld-servers.net. com. 172800 IN NS e.gtld-servers.net. com. 172800 IN NS i.gtld-servers.net. com. 172800 IN NS a.gtld-servers.net. com. 172800 IN NS c.gtld-servers.net. com. 172800 IN NS j.gtld-servers.net. com. 172800 IN NS k.gtld-servers.net. com. 172800 IN NS l.gtld-servers.net. com. 172800 IN NS d.gtld-servers.net. com. 172800 IN NS b.gtld-servers.net. com. 86400 IN DS 30909 8 2 E2D3C916F6DEEAC73294E8268FB5885044A833FC5459588F4A9184CF C41A5766 com. 86400 IN RRSIG DS 8 1 86400 20110906000000 20110829230000 39283 . FMBZuvFdyUZayOFWU4oa6qZKMu0lBn9Pn/6UH6PXmvfdJlS8VZbX4zYe v0SGIWwA+cY3LGrICltTHfeZ0/eVfW6L0qzlT8o9EnSQgZ0ZyvqYrmIy S30lwE/WobQVJSC9+ADyO2KNVw4Rpn570X5hTHeDnymoaiI4WxOBipIi v5I= ;; Received 738 bytes from 192.112.36.4#53(G.ROOT-SERVERS.NET) in 3133 ms ;; reply from unexpected source: 198.41.0.4#53, expected 192.54.112.30#53 ;; Warning: ID mismatch: expected ID 64144, got 28413 google.com. 172800 IN NS ns2.google.com. google.com. 172800 IN NS ns1.google.com. google.com. 172800 IN NS ns3.google.com. google.com. 172800 IN NS ns4.google.com. CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN NSEC3 1 1 0 - CK6RMF8AE5PU47R8P3AL6T4Q26TL26S7 NS SOA RRSIG DNSKEY NSEC3PARAM CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN RRSIG NSEC3 8 2 86400 20110906040911 20110830025911 41798 com. Q+Oxc56WTwwyYy8hwvK+8883fMBCk5P3zkCCn6R0zXbjL666jzIQ3Fqx hRY+f1DL/Mm4HVw7HY4rE1bAJ61iajFxMyys6P0fEGqx9jBM9gO/siE7 rTQilWZWwBFILlIggZFCt2Cpz0mJIplmJ4Ha5Anzp9Gt5f/TyBB3vu9c RKI= S80V6798LSRQS3HJ5JTSO7N1LKSVIAT8.com. 86400 IN NSEC3 1 1 0 - S8DHL9ICBS92G7KQAJCVT1CUQMAB9U5D NS DS RRSIG S80V6798LSRQS3HJ5JTSO7N1LKSVIAT8.com. 86400 IN RRSIG NSEC3 8 2 86400 20110906061156 20110830050156 41798 com. OhtpbDJaFRivIbgQKiFy7NXXfZszjX3TxVmZG2pfTDQNP30kkw0w23IG g57fMUpevAulJefCMKyPmCf+HJHVTBdH08i5rv97EZgo9oR0yvGlFn6J I8bngApoNqmIhvkwZpbxF1iamCp1SDuep7XMLpGq6EhvpwV+vlAwms9N EIU= ;; Received 664 bytes from 192.54.112.30#53(h.gtld-servers.net) in 215 ms www.google.com. 604800 IN CNAME www.l.google.com. www.l.google.com. 300 IN A 74.125.39.147 www.l.google.com. 300 IN A 74.125.39.104 www.l.google.com. 300 IN A 74.125.39.106 www.l.google.com. 300 IN A 74.125.39.105 www.l.google.com. 300 IN A 74.125.39.99 www.l.google.com. 300 IN A 74.125.39.103 ;; Received 148 bytes from 216.239.34.10#53(ns2.google.com) in 158 ms Regards, engtmk _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
