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review.blissroms.org / platform_packages_modules_DnsResolver / 1289a07cf9db01caa71a106110f368ec3c7a4293
commit1289a07cf9db01caa71a106110f368ec3c7a4293[log] [tgz]
authorlifr <lifr@google.com>Thu Apr 08 20:42:53 2021 +0800
committerlifr <lifr@google.com>Wed Apr 21 19:11:45 2021 +0800
tree8b01b073db9a5dde36deb15cc0f2d39a76b33895
parent8f58a580d8e6b316c2865e2d0a3cdf7a1f53c7a8 [diff]
Update the default sampling flag of DNS resolver metrics events

The sample rate of DNS resolver metrics events depends on Experiment
flag and default sampling flag. Currently, the sampling experiment
has been completed. Therefore update the new default sampling flag to
reduce the metrics event size.

1. Current default sampling rate:
   DEFAULT_SUBSAMPLING_MAP[] = "default:1 0:100 7:10
   metrics data size: 170k byte per device
2. Old Experiment:
   DEFAULT_SUBSAMPLING_MAP[] = "default:5 0:300 2:80 7:80"
   metrics data size: 11k byte per device
3. New default sampling rate:
   DEFAULT_SUBSAMPLING_MAP[] = "default:8 0:400 2:110 7:110"
   metrics data size: 7.9k byte per device
4. New Experiment:(including the temporary fix of b/185097438)
   DEFAULT_SUBSAMPLING_MAP[] = "default:8 0:400 2:110 4:110 7:110"
   metrics data size: 7.9k byte per device

Because there is already a solution for b/185097438 in the code.
Therefore, what this commit will do is item3 to reduce the size
of the event.

Bug: 184830442
Test: atest resolv_unit_test
Change-Id: I3c0ab4a4504dfd5f8c789348587de33e01951920
2 files changed
tree: 8b01b073db9a5dde36deb15cc0f2d39a76b33895
  1. aidl_api/
  2. apex/
  3. binder/
  4. include/
  5. tests/
  6. .clang-format ⇨ ../../../build/soong/scripts/system-clang-format
  7. rustfmt.toml ⇨ ../../../build/soong/scripts/rustfmt.toml
  8. .editorconfig
  9. Android.bp
  10. cbindgen.toml
  11. Dns64Configuration.cpp
  12. Dns64Configuration.h
  13. DnsProxyListener.cpp
  14. DnsProxyListener.h
  15. DnsQueryLog.cpp
  16. DnsQueryLog.h
  17. DnsQueryLogTest.cpp
  18. DnsResolver.cpp
  19. DnsResolver.h
  20. DnsResolverService.cpp
  21. DnsResolverService.h
  22. DnsStats.cpp
  23. DnsStats.h
  24. DnsStatsTest.cpp
  25. DnsTlsDispatcher.cpp
  26. DnsTlsDispatcher.h
  27. DnsTlsQueryMap.cpp
  28. DnsTlsQueryMap.h
  29. DnsTlsServer.cpp
  30. DnsTlsServer.h
  31. DnsTlsSessionCache.cpp
  32. DnsTlsSessionCache.h
  33. DnsTlsSocket.cpp
  34. DnsTlsSocket.h
  35. DnsTlsSocketFactory.h
  36. DnsTlsTransport.cpp
  37. DnsTlsTransport.h
  38. doh.h
  39. doh.rs
  40. doh_ffi_test.cpp
  41. Experiments.cpp
  42. Experiments.h
  43. ExperimentsTest.cpp
  44. getaddrinfo.cpp
  45. getaddrinfo.h
  46. gethnamaddr.cpp
  47. gethnamaddr.h
  48. hostent.h
  49. IDnsTlsSocket.h
  50. IDnsTlsSocketFactory.h
  51. IDnsTlsSocketObserver.h
  52. libnetd_resolv.map.txt
  53. LockedQueue.h
  54. NOTICE
  55. OperationLimiter.h
  56. OperationLimiterTest.cpp
  57. OWNERS
  58. params.h
  59. PREUPLOAD.cfg
  60. PrivateDnsCommon.h
  61. PrivateDnsConfiguration.cpp
  62. PrivateDnsConfiguration.h
  63. PrivateDnsConfigurationTest.cpp
  64. PrivateDnsValidationObserver.h
  65. README-DoT.md
  66. README.md
  67. res_cache.cpp
  68. res_comp.cpp
  69. res_comp.h
  70. res_debug.cpp
  71. res_debug.h
  72. res_mkquery.cpp
  73. res_query.cpp
  74. res_send.cpp
  75. res_send.h
  76. res_stats.cpp
  77. resolv_cache.h
  78. resolv_private.h
  79. resolv_test_config_template.xml
  80. ResolverController.cpp
  81. ResolverController.h
  82. ResolverEventReporter.cpp
  83. ResolverEventReporter.h
  84. ResolverStats.h
  85. sethostent.cpp
  86. stats.h
  87. stats.proto
  88. TEST_MAPPING
  89. util.cpp
  90. util.h
README.md

Logging

This code uses LOG(X) for logging. Log levels are VERBOSE,DEBUG,INFO,WARNING and ERROR. The default setting is WARNING and logs relate to WARNING and ERROR will be shown. If you want to enable the DEBUG level logs, using following command. adb shell service call dnsresolver 10 i32 1 VERBOSE 0 DEBUG 1 INFO 2 WARNING 3 ERROR 4 Verbose resolver logs could contain PII -- do NOT enable in production builds.