BIND 10 #1607: define ZoneFinder::findAdditional() and implement its default version

[BIND 10 Development]

#1607: define ZoneFinder::findAdditional() and implement its default version
-------------------------------------+-------------------------------------
                   Reporter:         |                 Owner:  jinmei
  jinmei                             |                Status:  closed
                       Type:  task   |             Milestone:
                   Priority:         |  Sprint-20120320
  medium                             |            Resolution:  complete
                  Component:         |             Sensitive:  0
  b10-auth                           |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  4
            Defect Severity:  N/A    |           Total Hours:  30.87
Feature Depending on Ticket:  auth   |
  performance                        |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
-------------------------------------+-------------------------------------

Comment (by jreed):

 Here are some qps results:

 Before:
 {{{
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf builtin--.nxdomain 3692.754604
 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf builtin--.soa 3409.415857 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf builtin--.success 23433.920469
 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf largehost-sqlite3-.nxdomain
 0.008074 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf largehost-sqlite3-.soa
 1657.549388 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf largehost-sqlite3-.success
 1555.479221 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-memory-.nxdomain
 28050.868567 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-memory-.soa 5841.863467 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-memory-.success 5162.483596
 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-sqlite3-nocache.nxdomain
 51.393433 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-sqlite3-nocache.soa
 386.524202 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-sqlite3-nocache.success
 407.885328 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-sqlite3-.nxdomain 52.398443
 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-sqlite3-.soa 364.882712 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf root-sqlite3-.success 396.496054
 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf smallzone-memory-.nxdomain
 26705.076400 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf smallzone-memory-.soa
 23378.067109 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf smallzone-memory-.success
 25052.125958 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf smallzone-
 sqlite3-nocache.nxdomain 2523.513468 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf smallzone-sqlite3-nocache.soa
 2707.114333 qps
 4a82ece4c4e353ab8e3ceb01fd8e0f4824ac6bbf smallzone-sqlite3-nocache.success
 2971.678972 qps
 }}}

 After:
 {{{
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 builtin--.nxdomain 3071.227113
 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 builtin--.soa 3423.179190 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 builtin--.success 22562.482508
 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 largehost-memory-.nxdomain
 22928.230329 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 largehost-memory-.soa
 16004.200526 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 largehost-memory-.success
 16294.292123 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 largehost-sqlite3-.nxdomain
 0.008065 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 largehost-sqlite3-.soa
 1542.643974 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 largehost-sqlite3-.success
 1459.850292 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-memory-.nxdomain
 26893.654851 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-memory-.soa 5568.907072 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-memory-.success 5326.642048
 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-sqlite3-nocache.nxdomain
 51.312237 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-sqlite3-nocache.soa
 375.367218 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-sqlite3-nocache.success
 405.669859 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-sqlite3-.nxdomain 56.554757
 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-sqlite3-.soa 386.966231 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 root-sqlite3-.success 418.413817
 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 smallzone-memory-.nxdomain
 26824.650266 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 smallzone-memory-.soa
 22369.809276 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 smallzone-memory-.success
 24351.056519 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 smallzone-
 sqlite3-nocache.nxdomain 2501.184361 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 smallzone-sqlite3-nocache.soa
 2727.912269 qps
 2e940ea65d5b9f371c26352afd9e66719c38a6b9 smallzone-sqlite3-nocache.success
 2961.104635 qps
 }}}

 Some explanations of these tests are at DnsBenchmarks.

 Basically everything had a decrease except for successful delegations for
 root zone. (Note that the largehost-memory results weren't done for the
 first test. It timed out and I didn't look further.)

-- 
Ticket URL: <http://bind10.isc.org/ticket/1607#comment:20>
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