docs/how-to-write-metrics.md - Issue 2424933003: Rename ValueSet* to HistogramSet*.

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Issue 2424933003: Rename ValueSet* to HistogramSet*. (Closed)

Patch Set: fix Created 4 years, 2 months ago

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1 <!-- Copyright 2016 The Chromium Authors. All rights reserved.	1 <!-- Copyright 2016 The Chromium Authors. All rights reserved.

2 Use of this source code is governed by a BSD-style license that can be	2 Use of this source code is governed by a BSD-style license that can be

3 found in the LICENSE file.	3 found in the LICENSE file.

4 -->	4 -->

5	5

6 Timeline-Based Measurement v2 is a system for computing metrics from traces.	6 Timeline-Based Measurement v2 is a system for computing metrics from traces.

7	7

8 A TBM2 metric is a Javascript function that takes a trace Model and produces	8 A TBM2 metric is a Javascript function that takes a trace Model and produces

9 Histograms.	9 Histograms.

10	10

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161 then it should use RelatedValueSet or RelatedValueMap; if it does not want to	161 then it should use RelatedValueSet or RelatedValueMap; if it does not want to

162 monitor changes in those numbers, then the TBM2 maintainers can add a	162 monitor changes in those numbers, then the TBM2 maintainers can add a

163 HistogramDiagnostic that supports merging.	163 HistogramDiagnostic that supports merging.

164	164

165	165

166 Consumers of Histograms	166 Consumers of Histograms

167 =======================	167 =======================

168	168

169 Histograms are consumed by	169 Histograms are consumed by

170	170

171 * [value-set-table](/tracing/tracing/value/ui/value-set-table.html) in both	171 * [histogram-set-table](/tracing/tracing/value/ui/histogram_set_table.html) in

172 results2.html and the Metrics side panel in trace viewer,	172 both results2.html and the Metrics side panel in trace viewer,

173 * the [dashboard](https://chromeperf.appspot.com) indirectly via their statisti cs.	173 * the [dashboard](https://chromeperf.appspot.com) indirectly via their statisti cs.

174	174

175 Currently, telemetry discards Histograms and Diagnostics, and only passes their	175 Currently, telemetry discards Histograms and Diagnostics, and only passes their

176 statistics scalars to the dashboard. Histograms and their Diagnostics will be	176 statistics scalars to the dashboard. Histograms and their Diagnostics will be

177 passed directly to the dashboard early 2017.	177 passed directly to the dashboard early 2017.

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