<!--
Copyright 2024 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<!--
This file is used to generate a comprehensive list of WebNN histograms
along with a detailed description for each histogram.
For best practices on writing histogram descriptions, see
https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md
Please follow the instructions in the OWNERS file in this directory to find a
reviewer. If no OWNERS file exists, please consider signing up at
go/reviewing-metrics (Googlers only), as all subdirectories are expected to
have an OWNERS file. As a last resort you can send the CL to
[email protected].
-->
<histogram-configuration>
<histograms>
<variants name="WebNNCoreMLActions">
<variant name="CompiledModelLoad"
summary="Time to load the compiled .mlmodelc file."/>
<variant name="MLModelCompile"
summary="Time to compile the generated .mlmodel file."/>
<variant name="MLModelTranslate"
summary="Time to translate from webnn graph to CoreML representation
and serializes to disk."/>
<variant name="MLModelWrite"
summary="Time to write the temporary .mlmodel file."/>
<variant name="MLWeightsWrite"
summary="Time to write the temporary weights.bin file."/>
<variant name="ModelOutputRead"
summary="Time it took to read back the inference results."/>
<variant name="ModelPredict"
summary="Time predictionFromFeatures took when calling compute()."/>
<variant name="ModelPredictWithDispatch"
summary="Time predictionFromFeatures took when calling dispatch()."/>
</variants>
<variants name="WebNNDMLActions">
<variant name="Compilation" summary="Time to compile the DirectML graph."/>
</variants>
<histogram name="WebNN.CoreML.TimingMs.{WebNNCoreMLActions}" units="ms"
expires_after="2025-02-26">
<owner>[email protected]</owner>
<owner>src/services/webnn/OWNERS</owner>
<summary>
The time taken to perform a WebNN CoreML action. This includes model
creation, model compilation, and model inference.
</summary>
</histogram>
<histogram name="WebNN.DML.TimingMs.{WebNNDMLActions}" units="ms"
expires_after="2025-06-27">
<owner>[email protected]</owner>
<owner>src/services/webnn/OWNERS</owner>
<summary>
The time taken to perform a WebNN DML action. This includes model
compilation.
</summary>
</histogram>
</histograms>
</histogram-configuration>
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