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"Windows tool_integration_tests" builds take too long, add subshards #189290

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Description

@jmagman
Builder Machine Type P25 Duration In Minutes Average Duration In Minutes P75 Duration In Minutes Total Builds Duration Bucket
Windows tool_integration_tests_7_10 c3d-standard-16 26.80 28.01 29.07 107 25-30
Windows tool_integration_tests_2_10 c3d-standard-16 21.15 24.27 26.85 106 20-25
Windows tool_integration_tests_10_10 c3d-standard-16 21.00 21.84 22.20 111 20-25
Windows tool_integration_tests_5_10 c3d-standard-16 18.80 20.26 21.23 111 20-25
Windows tool_integration_tests_4_10 c3d-standard-16 19.18 20.22 20.67 102 20-25
Windows tool_integration_tests_1_10 c3d-standard-16 18.72 19.56 20.23 104 15-20
Windows tool_integration_tests_3_10 c3d-standard-16 11.57 12.72 13.17 106 10-15
Windows tool_integration_tests_8_10 c3d-standard-16 10.07 10.56 10.68 105 10-15
Windows tool_integration_tests_9_10  c3d-standard-16 9.78 10.21 10.28 107 10-15

6 of the 10 Windows tool_integration_tests_* are regularly taking more than the targeted 10-15 minutes. Increase the number of shards until each are under 15 minutes. Queue times for these builders are currently ~4 seconds.

Currently, the try pool capacity for this test is 135 bots and the prod pool has 57 bots.

Set like this:

flutter/.ci.yaml

Line 6629 in 041dc6a

- name: Windows tool_integration_tests_1_10

flutter/.ci.yaml

Line 6643 in 041dc6a

subshard: "1_10"

See also #189039

Activity

  1. added
    a: tests"flutter test", flutter_test, or one of our tests
    c: contributor-productivityTeam-specific productivity, code health, technical debt.
    toolAffects the "flutter" command-line tool. See also t: labels.
    fyi-infraFor the attention of Infrastructure team
    team-toolOwned by Flutter Tool team
    on Jul 10, 2026
  2. removed
    fyi-infraFor the attention of Infrastructure team
    on Jul 13, 2026
  3. added
    P2Important issues not at the top of the work list
    triaged-toolTriaged by Flutter Tool team
    on Jul 14, 2026
  4. assigned and unassigned on Jul 14, 2026
  5. removed their assignment
    on Oct 7, 2026
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    P2Important issues not at the top of the work lista: tests"flutter test", flutter_test, or one of our testsc: contributor-productivityTeam-specific productivity, code health, technical debt.team-toolOwned by Flutter Tool teamtoolAffects the "flutter" command-line tool. See also t: labels.triaged-toolTriaged by Flutter Tool team

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