Profiling
Performance profiler for PowerShell Universal.
Profiling only works for the integrated environment.
PowerShell Universal provides a performance profiler for debugging issues where the platform may exhibit slow responses. This is primarily useful when building Dashboards.
Profiling will increase memory usage as profiling data is stored in memory. You can enable profiling by configuring the
Profiling appsettings.json property. It is false by default. You will need to restart PowerShell Universal after enabling or disabling profiling. "Profiling": true
You can access profiling data by navigating to
/profiler/results-index . You will need to be logged in as administrator before being able to access this URL. You will see a list of requests and their timings.
Result Index
Clicking on the request will display a break-down of the timings.
Timings
You can profile an API endpoint using
Measure-PSUBlock. The API will be listed by URL in the result index. For example, assume an API called
/process. New-PSUEndpoint -Url "/process" -Endpoint {
Measure-PSUBlock -Name 'Api' -ScriptBlock {
Get-Process | Select-Object name
}
} -Authentication -Timeout 0
The result of profiling this API would be listed by URL.
Viewing the profile for this API would list the block we measured.
Measure-UDBlock is an alias for Measure-PSUBlockYou can use the built-in profiler with Apps. By default, certain internal action timings are recorded. You can also use the
Measure-PSUBlock cmdlet to measure specific blocks within your dashboard. For example, this app uses
Measure-UDBlock to measure the performance of the Start-Sleep cmdlet. The result is the block will take one second to execute. New-UDApp -Title 'App' -Content {
New-UDDynamic -Id 'MyElement' -Content {
Measure-UDBlock -Name 'WithinDashboard' -ScriptBlock {
Start-Sleep 1
}
}
}
When reviewing requests within the profiler, you will want to look for
UDComponent\ElementPost and UDComponent\Element. These are requests for elements within Apps. Below is the example output from the app shown above. Notice that the URL includes the element's ID
MyElement. You'll also notice that the WithinDashboard block takes about 1 second. 
Dashboard Timing
Not all timing will be displayed by default. You can click
show trivial to expand all timings. 
All Timings
You can profile jobs by using
Measure-PSUBlock within your script. For example, assume we have a script that calls
Get-Service. Measure-PSUBlock -ScriptBlock {
Get-Service
} -Name 'Get-Service'
Running a profile on this script will list the job as
JobProfiler/{id}. The id will match the job ID shown in the admin console. 
The profile will include the block that was measured.
Last modified 3d ago