Uno Platform Performance

This repository contains standalone benchmarks for the Uno Platform, based on Benchmark.NET.

Related

• Uno Platform .NET 5 support annoucement, with benchmarks.

Daily Template Size Tracking Workflow

The repository includes an automated GitHub Actions workflow daily-template-size-tracking.yml that:

• Runs daily (5 AM UTC) and on pull requests touching the workflow or related scripts.
• Generates Uno template projects (dotnet new unoapp) for a matrix of:
  • .NET versions: 9.0 and 10.0 (configurable)
  • Template presets: blank, recommended (configurable)
  • Platforms: Android, iOS, WebAssembly, Desktop (Windows, Linux, macOS)
• Builds each project in Release and publishes artifacts.
• Collects size & build metrics via PowerShell scripts under .github/scripts/template-size-tracking/.
• Uploads metrics JSON files to Azure Blob Storage in a date & framework structured layout.
• Compares current results vs previous day and issues alerts if size deltas exceed thresholds.

Secrets & Configuration

The workflow uses federated identity (OIDC) for Azure Blob uploads. Configure these GitHub repository secrets:

Name	Purpose
SIZE_CHECK_AZURE_STORAGE_ACCOUNT_NAME	Storage account name for metrics archival
SIZE_CHECK_AZURE_CLIENT_ID	Client ID of Entra application or user-assigned managed identity
SIZE_CHECK_AZURE_TENANT_ID	Tenant (directory) ID for the identity
SIZE_CHECK_AZURE_SUBSCRIPTION_ID	Subscription ID hosting the storage account
UNO_APPLE_PROD_CERT_BASE64	Base64-encoded iOS distribution P12 certificate
UNO_APPLE_PROD_CERT_PASSWORD	Password for the P12 certificate
SIZE_CHECK_IOS_PROVISION_PROFILE_BASE64	Base64-encoded provisioning profile (.mobileprovision)

iOS Signing

iOS builds use a local composite action located at .github/actions/manual-ios-signing/action.yml which:

1. Decodes the distribution certificate and provisioning profile from secrets.
2. Creates an ephemeral keychain and imports the certificate.
3. Extracts the provisioning profile UUID and exports PROVISIONING_UUID and CODESIGN_KEY environment variables.
4. The workflow then publishes the iOS project with:
   • -p:CodesignKey="$env:CODESIGN_KEY"
   • -p:CodesignProvision="$env:PROVISIONING_UUID"
   • -p:ApplicationId=uno.platform.performance

For production distribution, the codesign-key input is set to iPhone Distribution.

Metrics & Alerts

Scripts:

Script	Purpose
measure-package-size.ps1	Collects sizes, counts, build time
upload-to-azure.ps1	Uploads metrics using identity (--auth-mode login)
compare-and-alert.ps1	Compares current vs previous day; sets alert/critical flags
generate-summary.ps1	Produces markdown summary output

Thresholds:

Variable	Default	Meaning
ALERT_THRESHOLD	10%	Opens issue if exceeded
FAILURE_THRESHOLD	20%	Fails workflow if exceeded

Extending

Dispatch inputs (example):

dotnet_versions: 9.0,10.0
templates: blank,recommended

Add platforms by editing matrix generation in the workflow.

Troubleshooting

Symptom	Cause	Resolution
iOS signing fails (UUID empty)	Invalid / expired provisioning profile	Recreate, re-base64, update secret
Azure upload fails (Auth)	Identity lacks role or wrong account name	Assign Storage Blob Data Contributor; verify storage name
No previous metrics	First run or prior day failed	Ignore first run; check daily schedule logs
Critical size increase failure	Large artifact growth	Inspect build artifacts; dependency changes

Security Notes

• Federated identity removes need for long-lived storage keys; use least-privilege RBAC.
• Limit access to certificate & provisioning secrets.
• Secrets are never echoed; scripts decode only locally.
• If a temporary rollback to key auth occurs, remove the key ASAP after returning to identity.

Future Improvements

• Automate trend chart generation and publish to repository pages.
• Add Android ApplicationId alignment if needed.
• Optional SAS generation for secure external sharing of metrics.