---
title: PerformanceSignature
framework: App Store Connect API
role: symbol
role_heading: Object
platforms: [app store connect api 4.5+]
path: appstoreconnectapi/performancesignature
---

# PerformanceSignature

A performance signature that identifies a recurring performance issue in an app, with its occurrence count and weight.

## Declaration

```data
object PerformanceSignature
```

## Properties

signatureId: The unique identifier of the performance signature. signature: The symbolicated call site that the signature represents. count: The number of occurrences that the signature represents. weight: The relative contribution of the signature to the metric. sourceFile: The source file that contains the code the signature refers to. lineNumber: The line number in the source file that the signature refers to. trendInfo: The direction of the metric’s trend for the signature. metricsSummary: A summary of the metric values across reference versions.

## Topics

### Objects

- [PerformanceSignature.MetricsSummary](appstoreconnectapi/performancesignature/metricssummary-data.dictionary.md)

## See Also

### Objects and types

- [AppPerfPowerMetricsLinkagesResponse](appstoreconnectapi/appperfpowermetricslinkagesresponse.md)
- [AppPerformanceOverviewsLinkagesResponse](appstoreconnectapi/appperformanceoverviewslinkagesresponse.md)
- [DiagnosticInsight](appstoreconnectapi/diagnosticinsight.md)
- [DiagnosticLog](appstoreconnectapi/diagnosticlog.md)
- [DiagnosticLogCallStackNode](appstoreconnectapi/diagnosticlogcallstacknode.md)
- [diagnosticLogs](appstoreconnectapi/diagnosticlogs.md)
- [DiagnosticSignature](appstoreconnectapi/diagnosticsignature.md)
- [DiagnosticSignatureLogsLinkagesResponse](appstoreconnectapi/diagnosticsignaturelogslinkagesresponse.md)
- [DiagnosticSignaturesResponse](appstoreconnectapi/diagnosticsignaturesresponse.md)
- [MetricCategory](appstoreconnectapi/metriccategory.md)
- [MetricsInsight](appstoreconnectapi/metricsinsight.md)
- [PerformanceOverview](appstoreconnectapi/performanceoverview.md)
- [PerfPowerMetric](appstoreconnectapi/perfpowermetric.md)
- [xcodeMetrics](appstoreconnectapi/xcodemetrics.md)
- [xcodeOverview](appstoreconnectapi/xcodeoverview.md)