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Improve efficiency of ETW metrics exporter #134

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Improve efficiency of ETW metrics exporter #134

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+252 −268

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mattbodd
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@mattbodd mattbodd commented Dec 3, 2024

Fixes #104
Design Decisions:

  • Follow .Net and C++ implementations and use helper methods to serialize fragments of metric points into a coherent, exportable buffer
  • Construct a new ResourceMetrics for each metric point and serialize each into an exportable buffer

Changes

Please provide a brief description of the changes here.

Merge requirement checklist

  • CONTRIBUTING guidelines followed
  • Unit tests added/updated (if applicable)
  • Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
  • Changes in public API reviewed (if applicable)

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codecov bot commented Dec 3, 2024 •
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Codecov Report

Attention: Patch coverage is 74.76636% with 27 lines in your changes missing coverage. Please review.

Project coverage is 53.9%. Comparing base (67b30de) to head (b29b530).

Files with missing lines Patch % Lines
opentelemetry-etw-metrics/src/exporter/mod.rs 74.7% 27 Missing ⚠️
Additional details and impacted files 
@@           Coverage Diff           @@
##            main    #134     +/-   ##
=======================================
- Coverage   54.1%   53.9%   -0.3%     
=======================================
  Files         42      42             
  Lines       6276    6135    -141     
=======================================
- Hits        3401    3311     -90     
+ Misses      2875    2824     -51

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@mattbodd
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Comparing the latest exporter benchmark results between the proposed export implementation and the previous export implementation, there is a ~26% improvement.

@mattbodd mattbodd marked this pull request as ready for review December 17, 2024 20:42
@mattbodd mattbodd requested a review from a team as a code owner December 17, 2024 20:42
@mattbodd
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Comparing the latest exporter benchmark results between the proposed export implementation and the previous export implementation, there is a ~26% improvement.

With a more realistic ResourceMetrics, the improvement looks to be closer to 38%

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@utpilla utpilla utpilla left review comments

@cijothomas cijothomas cijothomas left review comments

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Etw-Metrics - Improvements required
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@mattbodd @cijothomas @utpilla