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Add parameter to control instance count for Host JIT trace generation #11534

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fdefceb
Add jitTraceInstancesForRelease parameter to control instance count f…
Francisco-Gamino Dec 19, 2025
1a5ab34
Set default param value
Francisco-Gamino Dec 19, 2025
9f0fa9c
Fix Azure DevOps job naming validation by prefixing instance IDs with…
Francisco-Gamino Dec 19, 2025
9758425
Fix Azure DevOps job naming by prefixing instance IDs with 'Instance'…
Francisco-Gamino Dec 19, 2025
bd6b529
Address PR feedback: shorten display name, strip spaces at source, an…
Francisco-Gamino Dec 19, 2025
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25 changes: 17 additions & 8 deletions eng/ci/host.coldstart.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,10 @@ parameters:
displayName: Create Jit trace (Ensure "Collect DotNet trace" is set to true)
type: boolean
default: false
- name: jitTraceInstancesForRelease
displayName: JIT trace instances (comma-separated, e.g., 1,2,3). Only applies when 'Create Jit trace' is true. Leave empty for default.
type: string
default: ''

- name: collectPerfViewProfileOnWindows
displayName: Collect PerfView Profile (on Windows)
Expand Down Expand Up @@ -70,6 +74,11 @@ variables:
value: true
${{ if ne(variables['Build.Reason'], 'Schedule') }}:
value: ${{ parameters.collectPerfViewProfileOnWindows }}
- name: effectiveRunInstances
${{ if and(eq(parameters.createJitTrace, true), ne(parameters.jitTraceInstancesForRelease, '')) }}:
value: ${{ replace(parameters.jitTraceInstancesForRelease, ' ', '') }}
${{ else }}:
value: ${{ variables.runInstances }}

extends:
template: v1/1ES.Unofficial.PipelineTemplate.yml@1es
Expand All @@ -83,7 +92,7 @@ extends:
- stage: RunWindows
displayName: Record latency(Windows)
jobs:
- ${{ each appId in split(variables.runInstances, ',') }}:
- ${{ each appId in split(variables.effectiveRunInstances, ',') }}:
- ${{ if eq(parameters.includeHelloHttpNet9, true) }}:
- template: /eng/ci/templates/official/jobs/run-coldstart.yml@self
parameters:
Expand Down Expand Up @@ -129,28 +138,28 @@ extends:
functionAppName: HelloHttpNet9
description: .NET9 Web Application
runInstances:
items: ${{ split(variables.runInstances, ',') }}
items: ${{ split(variables.effectiveRunInstances, ',') }}
- ${{ if eq(parameters.includeHelloHttpNet9NoProxy, true) }}:
- template: /eng/ci/templates/official/jobs/process-coldstart.yml@self
parameters:
functionAppName: HelloHttpNet9NoProxy
description: .NET9 Worker Application
runInstances:
items: ${{ split(variables.runInstances, ',') }}
items: ${{ split(variables.effectiveRunInstances, ',') }}
- ${{ if eq(parameters.includeHelloHttpNode, true) }}:
- template: /eng/ci/templates/official/jobs/process-coldstart.yml@self
parameters:
functionAppName: HelloHttpNode
description: Node Application
runInstances:
items: ${{ split(variables.runInstances, ',') }}
items: ${{ split(variables.effectiveRunInstances, ',') }}

# # LINUX
- stage: RunLinux
dependsOn: []
displayName: Record latency(Linux)
jobs:
- ${{ each appId in split(variables.runInstances, ',') }}:
- ${{ each appId in split(variables.effectiveRunInstances, ',') }}:
- ${{ if eq(parameters.includeHelloHttpNet9, true) }}:
- template: /eng/ci/templates/official/jobs/run-coldstart.yml@self
parameters:
Expand Down Expand Up @@ -194,23 +203,23 @@ extends:
description: .NET9 Web Application
os: Linux
runInstances:
items: ${{ split(variables.runInstances, ',') }}
items: ${{ split(variables.effectiveRunInstances, ',') }}
- ${{ if eq(parameters.includeHelloHttpNet9NoProxy, true) }}:
- template: /eng/ci/templates/official/jobs/process-coldstart.yml@self
parameters:
functionAppName: HelloHttpNet9NoProxy
description: .NET9 Worker Application
os: Linux
runInstances:
items: ${{ split(variables.runInstances, ',') }}
items: ${{ split(variables.effectiveRunInstances, ',') }}
- ${{ if eq(parameters.includeHelloHttpNode, true) }}:
- template: /eng/ci/templates/official/jobs/process-coldstart.yml@self
parameters:
functionAppName: HelloHttpNode
description: Node Application
os: Linux
runInstances:
items: ${{ split(variables.runInstances, ',') }}
items: ${{ split(variables.effectiveRunInstances, ',') }}

# Merge JIT traces from different function apps and dedupe.
- stage: MergeWindowsJitTraceFiles
Expand Down
2 changes: 1 addition & 1 deletion eng/ci/templates/official/jobs/process-coldstart.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@ jobs:
artifactName: coldstart_${{ parameters.os }}_${{ parameters.functionAppName }}

${{ each r in parameters.runInstances.items }}:
latencies${{ r }}: $[stageDependencies.Run${{ parameters.os }}.${{ parameters.functionAppName }}_${{ r }}.outputs['Record.coldStartLatency']]
latencies${{ r }}: $[stageDependencies.Run${{ parameters.os }}.${{ parameters.functionAppName }}_Instance${{ r }}.outputs['Record.coldStartLatency']]

templateContext:
outputParentDirectory: $(Build.ArtifactStagingDirectory)
Expand Down
2 changes: 1 addition & 1 deletion eng/ci/templates/official/jobs/run-coldstart.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ parameters:
default: false

jobs:
- job: ${{ parameters.functionAppName }}_${{ parameters.instanceId }}
- job: ${{ parameters.functionAppName }}_Instance${{ replace(parameters.instanceId, ' ', '') }}
displayName: ${{ parameters.description }} ${{ parameters.instanceId }}
pool:
name: 1es-pool-azfunc-benchmarking
Expand Down