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Blazor Scenarios

An introduction of how to run scenario tests can be found in Scenarios Tests Guide. The current document has specific instruction to run:

New Blazorwasm Template Size On Disk

New Blazorwasm Template Size On Disk is a scenario test that meausres the size of published output of blazorwasm template. In other words, our test harness implicitly calls

dotnet new blazorwasm

and then

dotnet publish -c Release -o pub

and measures the sizes of the pub\ directory and its children with SizeOnDisk Tool.

For more information about scenario tests in general, an introduction of how to run scenario tests can be found in Scenario Tests Guide. The current document has specific instruction to run blazor scenario tests.

Prerequisites

  • python3 or newer
  • dotnet runtime 6.0 or newer

Step 1 Initialize Environment

Same instruction of Step 1 in Scenario Tests Guide.

Step 2 Run Precommand

Run precommand to create and publish a new blazorwasm template:

cd blazor
python3 pre.py publish --msbuild "/p:_TrimmerDumpDependencies=true"

Now there should be source code of the blazorwasm project under app\ and published output under pub\. The --msbuild "/p:_TrimmerDumpDependencies=true" argument is optional and can be added to generate linker dump from the build, which will be saved to blazor\app\obj\<Configuration>\<Runtime>\linked\linker-dependencies.xml.gz.

Step 3 Run Test

Run testcommand to measure the size on disk of the published output:

py -3 test.py sod --scenario-name "SOD - New Blazor Template - Publish"

In the command, sod refers to the "Size On Disk" metric and SizeOnDisk Tool will be used for this scenario. Note that --scenario-name is optional and the value can be changed for your own reference.

The test output should look like the following:

[2020/09/25 11:24:44][INFO] ----------------------------------------------
[2020/09/25 11:24:44][INFO] Initializing logger 2020-09-25 11:24:44.727500
[2020/09/25 11:24:44][INFO] ----------------------------------------------
[2020/09/25 11:24:44][INFO] $ C:\repos\performance-docs\artifacts\SOD\SizeOnDisk.exe --report-json-path traces\perf-lab-report.json --scenario-name "SOD - New Blazor Template - Publish" --dirs pub
[2020/09/25 11:24:46][INFO] SOD - New Blazor Template - Publish
[2020/09/25 11:24:46][INFO] Metric
                              |Average            |Min                |Max
[2020/09/25 11:24:46][INFO] -----------------------------------------------------------------------------------------|-------------------|-------------------|-------------------
[2020/09/25 11:24:46][INFO] SOD - New Blazor Template - Publish
                              |27527723.000 bytes |27527723.000 bytes |27527723.000 bytes
[2020/09/25 11:24:46][INFO] Total Uncompressed _framework
                              |15820983.000 bytes |15820983.000 bytes |15820983.000 bytes
[2020/09/25 11:24:46][INFO] Total Uncompressed _framework - Count
                              |72.000 count       |72.000 count       |72.000 count
[2020/09/25 11:24:46][INFO] Synthetic Wire Size - .br

SizeOnDisk Tool recursively measures the size of each folder and its children under the specified directory. In addition to the folders and files (path-like counters such as pub\wwwroot\_framework\blazor.webassembly.js.gz ), it also generates aggregate counters for each file type (such as Aggregate - .dll). For this New Blazorwasm Template Size On Disk scenario, Counter names starting with Synthetic Wire Size is a unique counter type for blazorwasm, which simulates the size of files actually transferred over the wire when the webpage loads.

Step 4 Run Postcommand

Same instruction of Step 4 in Scenario Tests Guide.

Command Matrix

For the purpose of quick reference, the commands can be summarized into the following matrix:

Scenario Asset Directory Precommand Testcommand Postcommand Supported Framework Supported Platform
SOD - New Blazor Template - Publish blazor pre.py publish --msbuild "/p:_TrimmerDumpDependencies=true" test.py sod --scenario-name "SOD - New Blazor Template - Publish" post.py net7.0; net8.0 Windows;Linux

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