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1 # benchmark | 1 # benchmark |
2 | 2 |
3 This application connects to another mojo application, collects traces during | 3 This application connects to another mojo application, collects traces during |
4 indicated period of time and computes a number of results based on the collected | 4 indicated period of time and computes a number of results based on the collected |
5 traces. It can be used to measure performance of a mojo app, provided that the | 5 traces. It can be used to measure performance of a mojo app, provided that the |
6 app being benchmarked participates in the [tracing | 6 app being benchmarked participates in the [tracing |
7 ecosystem](../../mojo/services/tracing/public/interfaces/tracing.mojom). | 7 ecosystem](../../mojo/services/tracing/public/interfaces/tracing.mojom). |
8 | 8 |
9 ## Arguments | 9 ## Arguments |
10 | 10 |
11 The benchmarking app expects the following arguments: | 11 The benchmarking app expects the following arguments: |
12 | 12 |
13 - `--app=<app_url>` - url of the application to be benchmarked | 13 - `--app=<app_url>` - url of the application to be benchmarked |
14 - `--duration=<duration_seconds>` - duration of the benchmark in seconds | 14 - `--duration=<duration_seconds>` - duration of the benchmark in seconds |
15 | 15 |
16 any other arguments are assumed to be descriptions of measurements to be | 16 any other arguments are assumed to be descriptions of measurements to be |
17 conducted on the collected trace data. Each measurement has to be of form: | 17 conducted on the collected trace data. Each measurement has to be of form: |
18 `<measurement_type>/<trace_event_category>/<trace_event_name>`. | 18 `<measurement_type>/<trace_event_category>/<trace_event_name>`. |
19 | 19 |
20 The following measurement types are available: | 20 The following measurement types are available: |
21 | 21 |
22 - `time_until` - measures time until the first occurence of the event named | 22 - `time_until` - measures time until the first occurence of the event named |
23 `trace_event_name` in category `trace_event_category`. | 23 `trace_event_name` in category `trace_event_category`. |
24 - `avg_duration` - measures average duration of all events named | 24 - `avg_duration` - measures average duration of all events named |
25 `trace_event_name` in category `trace_event_category`. | 25 `trace_event_name` in category `trace_event_category`. |
26 | 26 |
27 ## Runner script | 27 ## Runner script |
28 | 28 |
29 Devtools offers [a helper script](../../mojo/devtools/common/mojo_benchmark) | 29 Devtools offers [a helper script](../../mojo/devtools/common/mojo_benchmark) |
30 allowing to run a list of benchmarks, including on an Android device. | 30 allowing to run a list of benchmarks in controlled caching conditions, both |
| 31 on Linux and Android. |
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