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Ran 28 Jul 2020 05:33PM UTC

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Build # 34486

Build Type

push

travis-ci-com

Committed by

web-flow

Commit Message

Make independent owners requests per file to improve memoization (#10491)

### Problem

#10441 caused a performance regression from about 10s to run `./pants dependencies --transitive ::` with inference enabled, to about 22s.

### Solution

Make independent owners requests per file we'd like to find owners, which allows the lookups for each file to be memoized independently.

### Result

`./pants dependencies --transitive ::` takes 15s. Although we are doing more work than before (before #10441, conftest discovery would only happen at `test` time), this is not ideal, and we should do further optimization before launch. But there are a few variables that will impact this soon that make it not the best time to optimize: 1) an intrinisic `PathGlobs->Paths` operation, 2) possibly enabling inference by default, allowing all of the strategies to use the module_mapper.

[ci skip-rust-tests]

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Jobs

ID	Job ID	Ran	Files	Coverage
5	34486.5 (PANTS_CONFIG_FILES="${TRAVIS_BUILD_DIR}/pants.travis-ci.toml" LC_ALL="en_US.UTF-8" AWS_BUCKET=ci-public.pantsbuild.org BOOTSTRAPPED_PEX_KEY_PREFIX=daily/${TRAVIS_BUILD_NUMBER}/${TRAVIS_BUILD_ID}/pants.pex NATIVE_ENGINE_SO_KEY_PREFIX=monthly/native_engine_so PYENV_PY27_VERSION=2.7.18 PYENV_PY36_VERSION=3.6.10 PYENV_PY37_VERSION=3.7.7 PYENV_PY38_VERSION=3.8.3 PYENV_ROOT_OSX=${HOME}/.pants_pyenv PYENV_ROOT="${PYENV_ROOT:-${PYENV_ROOT_OSX}}" PATH="${PYENV_ROOT}/shims:${PATH}" AWS_CLI_ROOT="${HOME}/.aws_cli" AWS_ACCESS_KEY_ID__TO_BE_REEXPORTED_ON_DEPLOYS=AKIAV6A6G7RQWPRUWIXR AWS_SECRET_ACCESS_KEY=[secure] RUST_BACKTRACE="all" BOOTSTRAPPED_PEX_KEY_SUFFIX=py36.linux PANTS_REMOTE_CA_CERTS_PATH=/usr/lib/google-cloud-sdk/lib/third_party/grpc/_cython/_credentials/roots.pem CACHE_NAME=python_tests.py36)	28 Jul 2020 05:33PM UTC	0	0.0	Travis Job 34486.5

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