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Ran 09 Oct 2019 04:29PM UTC

Files 32

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Committed 09 Oct 2019 04:28PM UTC coverage: 100.0%. Remained the same

Job # 2.5.3

Build Type

Pull #160

travis-ci

Committed by

web-flow

Commit Message

Reduce memory bloating in FileMappedDict when reading metrics.

During the read path (metrics export) we open all existing metric files
and read through them in order to aggregate metrics across different
processes. When reading non-empty files we end up parsing file content
twice: first during FileMappedDict initialisation, then again in the
caller site (`all_values`).

This commit refactors FileMappedDict so that while the `@positions` map
is populated at creation time, the actual metric values are read only
when explicitly requested. This avoids the memory bloat of unpacking
file content twice.

Pull Request Pull Request #160: Reduce memory bloating in FileMappedDict when reading metrics.

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