Quotas and limits

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This document provides quota and limit information for Google Cloud Observability. For service-specific quota and limit information, see the following documents:

• Error Reporting quotas and limits
• Cloud Logging quotas and limits
• Cloud Monitoring quotas and limits
• Cloud Profiler quotas and limits
• Cloud Trace quotas and limits

Telemetry API limits

This section lists the limits that apply when the Telemetry (OTLP) API is used to ingest trace data. This API, which implements the OpenTelemetry OTLP API, is designed for use with applications that are instrumented by using one of the OpenTelemetry SDKs.

Description	Value
Maximum size of attribute keys	512 bytes
Maximum size of attribute values	64 KiB
Maximum size of a Span* object's name	1024 bytes
Maximum number of attributes attached to a Span* object	1024
Maximum number of resource attributes per ResourceSpans* object	1024
Maximum number of attributes per ResourceSpan* object Includes attributes attached to child objects of the following types: Resource, Span, ScopeSpans, Event, and Link.	8192
Maximum number of Event* objects per Span* object	256
Maximum number of Link* objects per Span* object	128
Maximum size of an Event* object's name	1024 bytes
Maximum number of attributes per Event* object	1024
Maximum attributes per Link* object	1024
Maximum size of schema URLs	8192 bytes

^*  For a definition of this structure, see the OpenTelemetry trace.proto.

View and manage your quota

To learn more about quotas, including how to view and manage your quota, see Working with quotas.

To view your current quota usage, in the Google Cloud console, go to APIs & Services or click the following button:

Go to APIs & Services