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Title: Temporal SDK metrics reference | Temporal Platform Documentation

Open Graph Title: Temporal SDK metrics reference | Temporal Platform Documentation

Description: Temporal SDKs emit metrics covering Client usage and Worker Processes. Metrics can be tuned to improve Worker performance and are prefixed with temporal_ before export.

Open Graph Description: Temporal SDKs emit metrics covering Client usage and Worker Processes. Metrics can be tuned to improve Worker performance and are prefixed with temporal_ before export.

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Opengraph URL: https://docs.temporal.io/references/sdk-metrics

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Links:

Skip to main contenthttps://docs.temporal.io/references/sdk-metrics#__docusaurus_skipToContent_fallback
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Temporal Service metricshttps://docs.temporal.io/references/cluster-metrics
Commandshttps://docs.temporal.io/references/commands
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Dynamic configurationhttps://docs.temporal.io/references/dynamic-configuration
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Environment configurationhttps://docs.temporal.io/references/client-environment-configuration
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Operationshttps://docs.temporal.io/references/operation-list
SDK metricshttps://docs.temporal.io/references/sdk-metrics
Server optionshttps://docs.temporal.io/references/server-options
Web UI confighttps://docs.temporal.io/references/web-ui-configuration
Web UI env varshttps://docs.temporal.io/references/web-ui-environment-variables
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https://docs.temporal.io/
Referenceshttps://docs.temporal.io/references/
Temporal SDKshttps://docs.temporal.io/encyclopedia/temporal-sdks
Cloud metricshttps://docs.temporal.io/cloud/metrics/
Temporal Cloudhttps://docs.temporal.io/cloud/overview
Cluster metricshttps://docs.temporal.io/references/cluster-metrics
OSS Clusterhttps://docs.temporal.io/temporal-service
How to emit metrics using the Go SDKhttps://docs.temporal.io/develop/go/observability#metrics
How to emit metrics using the Java SDKhttps://docs.temporal.io/develop/java/observability#metrics
How to emit metrics using the Python SDKhttps://docs.temporal.io/develop/python/observability#metrics
How to emit metrics using the TypeScript SDKhttps://docs.temporal.io/develop/typescript/observability#metrics
How to emit metrics using the .NET SDKhttps://docs.temporal.io/develop/dotnet/observability#metrics
How to emit metrics using the Ruby SDKhttps://docs.temporal.io/develop/ruby/observability#metrics
How to tune Worker performance based on metricshttps://docs.temporal.io/develop/worker-performance
Core SDK Worker metricshttps://github.com/temporalio/sdk-core/blob/master/crates/sdk-core/src/telemetry/metrics.rs
Core SDK Client metricshttps://github.com/temporalio/sdk-core/blob/master/crates/client/src/metrics.rs
Java SDK Worker metricshttps://github.com/temporalio/sdk-java/blob/master/temporal-sdk/src/main/java/io/temporal/worker/MetricsType.java
Java SDK Client metricshttps://github.com/temporalio/sdk-java/blob/master/temporal-serviceclient/src/main/java/io/temporal/serviceclient/MetricsType.java
Go SDK Worker and Client metricshttps://github.com/temporalio/sdk-go/blob/c32b04729cc7691f80c16f80eed7f323ee5ce24f/internal/common/metrics/constants.go
Core SDKhttps://docs.temporal.io/glossary#core-sdk
temporal_activity_execution_cancelledhttps://docs.temporal.io/references/sdk-metrics#activity_execution_cancelled
temporal_activity_execution_failedhttps://docs.temporal.io/references/sdk-metrics#activity_execution_failed
temporal_activity_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#activity_execution_latency
temporal_activity_poll_no_taskhttps://docs.temporal.io/references/sdk-metrics#activity_poll_no_task
temporal_activity_schedule_to_start_latencyhttps://docs.temporal.io/references/sdk-metrics#activity_schedule_to_start_latency
temporal_activity_succeed_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#activity_succeed_endtoend_latency
temporal_activity_task_errorhttps://docs.temporal.io/references/sdk-metrics#activity_task_error
temporal_corrupted_signalshttps://docs.temporal.io/references/sdk-metrics#corrupted_signals
temporal_local_activity_execution_cancelledhttps://docs.temporal.io/references/sdk-metrics#local_activity_execution_cancelled
temporal_local_activity_execution_failedhttps://docs.temporal.io/references/sdk-metrics#local_activity_execution_failed
temporal_local_activity_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#local_activity_execution_latency
temporal_local_activity_succeeded_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#local_activity_succeeded_endtoend_latency
temporal_local_activity_totalhttps://docs.temporal.io/references/sdk-metrics#local_activity_total
temporal_long_requesthttps://docs.temporal.io/references/sdk-metrics#long_request
temporal_long_request_failurehttps://docs.temporal.io/references/sdk-metrics#long_request_failure
temporal_long_request_latencyhttps://docs.temporal.io/references/sdk-metrics#long_request_latency
temporal_nexus_poll_no_taskhttps://docs.temporal.io/references/sdk-metrics#nexus_poll_no_task
temporal_nexus_task_schedule_to_start_latencyhttps://docs.temporal.io/references/sdk-metrics#nexus_task_schedule_to_start_latency
temporal_nexus_task_execution_failedhttps://docs.temporal.io/references/sdk-metrics#nexus_task_execution_failed
temporal_nexus_task_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#nexus_task_execution_latency
temporal_nexus_task_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#nexus_task_endtoend_latency
temporal_num_pollershttps://docs.temporal.io/references/sdk-metrics#num_pollers
temporal_poller_starthttps://docs.temporal.io/references/sdk-metrics#poller_start
temporal_requesthttps://docs.temporal.io/references/sdk-metrics#request
temporal_request_failurehttps://docs.temporal.io/references/sdk-metrics#request_failure
temporal_request_latencyhttps://docs.temporal.io/references/sdk-metrics#request_latency
temporal_resource_slots_mem_usagehttps://docs.temporal.io/references/sdk-metrics#resource_slots_cpu_usage
temporal_resource_slots_cpu_usagehttps://docs.temporal.io/references/sdk-metrics#resource_slots_mem_usage
temporal_sticky_cache_hithttps://docs.temporal.io/references/sdk-metrics#sticky_cache_hit
temporal_sticky_cache_misshttps://docs.temporal.io/references/sdk-metrics#sticky_cache_miss
temporal_sticky_cache_sizehttps://docs.temporal.io/references/sdk-metrics#sticky_cache_size
temporal_sticky_cache_total_forced_evictionhttps://docs.temporal.io/references/sdk-metrics#sticky_cache_total_forced_eviction
temporal_unregistered_activity_invocationhttps://docs.temporal.io/references/sdk-metrics#unregistered_activity_invocation
temporal_worker_starthttps://docs.temporal.io/references/sdk-metrics#worker_start
temporal_worker_task_slots_availablehttps://docs.temporal.io/references/sdk-metrics#worker_task_slots_available
temporal_worker_task_slots_usedhttps://docs.temporal.io/references/sdk-metrics#worker_task_slots_used
temporal_workflow_active_thread_counthttps://docs.temporal.io/references/sdk-metrics#workflow_active_thread_count
temporal_workflow_cancelledhttps://docs.temporal.io/references/sdk-metrics#workflow_cancelled
temporal_workflow_completedhttps://docs.temporal.io/references/sdk-metrics#workflow_completed
temporal_workflow_continue_as_newhttps://docs.temporal.io/references/sdk-metrics#workflow_continue_as_new
temporal_workflow_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_endtoend_latency
temporal_workflow_failedhttps://docs.temporal.io/references/sdk-metrics#workflow_failed
temporal_workflow_task_execution_failedhttps://docs.temporal.io/references/sdk-metrics#workflow_task_execution_failed
temporal_workflow_task_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_execution_latency
temporal_workflow_task_queue_poll_emptyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_queue_poll_empty
temporal_workflow_task_queue_poll_succeedhttps://docs.temporal.io/references/sdk-metrics#workflow_task_queue_poll_succeed
temporal_workflow_task_replay_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_replay_latency
temporal_workflow_task_schedule_to_start_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_schedule_to_start_latency
https://docs.temporal.io/references/sdk-metrics#activity_execution_cancelled
https://docs.temporal.io/references/sdk-metrics#activity_execution_failed
local_activity_execution_failedhttps://docs.temporal.io/references/sdk-metrics#local_activity_execution_failed
https://docs.temporal.io/references/sdk-metrics#activity_execution_latency
https://docs.temporal.io/references/sdk-metrics#activity_poll_no_task
https://docs.temporal.io/references/sdk-metrics#activity_schedule_to_start_latency
Schedule-To-Start Timeouthttps://docs.temporal.io/encyclopedia/detecting-activity-failures#schedule-to-start-timeout
https://docs.temporal.io/references/sdk-metrics#activity_succeed_endtoend_latency
https://docs.temporal.io/references/sdk-metrics#activity_task_error
https://docs.temporal.io/references/sdk-metrics#corrupted_signals
https://docs.temporal.io/references/sdk-metrics#local_activity_execution_cancelled
https://docs.temporal.io/references/sdk-metrics#local_activity_execution_failed
https://docs.temporal.io/references/sdk-metrics#local_activity_execution_latency
https://docs.temporal.io/references/sdk-metrics#local_activity_succeeded_endtoend_latency
https://docs.temporal.io/references/sdk-metrics#local_activity_total
Local Activity Executionshttps://docs.temporal.io/local-activity
https://docs.temporal.io/references/sdk-metrics#long_request
https://docs.temporal.io/references/sdk-metrics#long_request_failure
https://docs.temporal.io/references/sdk-metrics#long_request_latency
https://docs.temporal.io/references/sdk-metrics#nexus_poll_no_task
https://docs.temporal.io/references/sdk-metrics#nexus_task_schedule_to_start_latency
https://docs.temporal.io/references/sdk-metrics#nexus_task_execution_failed
Nexus spechttps://github.com/nexus-rpc/api/blob/main/SPEC.md#predefined-handler-errors
https://docs.temporal.io/references/sdk-metrics#nexus_task_execution_latency
https://docs.temporal.io/references/sdk-metrics#nexus_task_endtoend_latency
https://docs.temporal.io/references/sdk-metrics#num_pollers
https://docs.temporal.io/references/sdk-metrics#poller_start
https://docs.temporal.io/references/sdk-metrics#request
https://docs.temporal.io/references/sdk-metrics#request_failure
https://docs.temporal.io/references/sdk-metrics#request_latency
https://docs.temporal.io/references/sdk-metrics#resource_slots_cpu_usage
https://docs.temporal.io/references/sdk-metrics#resource_slots_mem_usage
https://docs.temporal.io/references/sdk-metrics#sticky_cache_hit
https://docs.temporal.io/references/sdk-metrics#sticky_cache_miss
https://docs.temporal.io/references/sdk-metrics#sticky_cache_size
https://docs.temporal.io/references/sdk-metrics#sticky_cache_total_forced_eviction
https://docs.temporal.io/references/sdk-metrics#unregistered_activity_invocation
https://docs.temporal.io/references/sdk-metrics#worker_start
https://docs.temporal.io/references/sdk-metrics#worker_task_slots_available
https://docs.temporal.io/references/sdk-metrics#worker_task_slots_used
https://docs.temporal.io/references/sdk-metrics#workflow_active_thread_count
https://docs.temporal.io/references/sdk-metrics#workflow_cancelled
https://docs.temporal.io/references/sdk-metrics#workflow_completed
https://docs.temporal.io/references/sdk-metrics#workflow_continue_as_new
https://docs.temporal.io/references/sdk-metrics#workflow_endtoend_latency
https://docs.temporal.io/references/sdk-metrics#workflow_failed
https://docs.temporal.io/references/sdk-metrics#workflow_task_execution_failed
https://docs.temporal.io/references/sdk-metrics#workflow_task_execution_latency
https://docs.temporal.io/references/sdk-metrics#workflow_task_queue_poll_empty
https://docs.temporal.io/references/sdk-metrics#workflow_task_queue_poll_succeed
https://docs.temporal.io/references/sdk-metrics#workflow_task_replay_latency
https://docs.temporal.io/references/sdk-metrics#workflow_task_schedule_to_start_latency
Referencehttps://docs.temporal.io/tags/reference
Metricshttps://docs.temporal.io/tags/metrics
documentationhttps://github.com/temporalio/documentation
PreviousOperationshttps://docs.temporal.io/references/operation-list
NextServer optionshttps://docs.temporal.io/references/server-options
activity_execution_cancelledhttps://docs.temporal.io/references/sdk-metrics#activity_execution_cancelled
activity_execution_failedhttps://docs.temporal.io/references/sdk-metrics#activity_execution_failed
activity_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#activity_execution_latency
activity_poll_no_taskhttps://docs.temporal.io/references/sdk-metrics#activity_poll_no_task
activity_schedule_to_start_latencyhttps://docs.temporal.io/references/sdk-metrics#activity_schedule_to_start_latency
activity_succeed_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#activity_succeed_endtoend_latency
activity_task_errorhttps://docs.temporal.io/references/sdk-metrics#activity_task_error
corrupted_signalshttps://docs.temporal.io/references/sdk-metrics#corrupted_signals
local_activity_execution_cancelledhttps://docs.temporal.io/references/sdk-metrics#local_activity_execution_cancelled
local_activity_execution_failedhttps://docs.temporal.io/references/sdk-metrics#local_activity_execution_failed
local_activity_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#local_activity_execution_latency
local_activity_succeeded_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#local_activity_succeeded_endtoend_latency
local_activity_totalhttps://docs.temporal.io/references/sdk-metrics#local_activity_total
long_requesthttps://docs.temporal.io/references/sdk-metrics#long_request
long_request_failurehttps://docs.temporal.io/references/sdk-metrics#long_request_failure
long_request_latencyhttps://docs.temporal.io/references/sdk-metrics#long_request_latency
nexus_poll_no_taskhttps://docs.temporal.io/references/sdk-metrics#nexus_poll_no_task
nexus_task_schedule_to_start_latencyhttps://docs.temporal.io/references/sdk-metrics#nexus_task_schedule_to_start_latency
nexus_task_execution_failedhttps://docs.temporal.io/references/sdk-metrics#nexus_task_execution_failed
nexus_task_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#nexus_task_execution_latency
nexus_task_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#nexus_task_endtoend_latency
num_pollershttps://docs.temporal.io/references/sdk-metrics#num_pollers
poller_starthttps://docs.temporal.io/references/sdk-metrics#poller_start
requesthttps://docs.temporal.io/references/sdk-metrics#request
request_failurehttps://docs.temporal.io/references/sdk-metrics#request_failure
request_latencyhttps://docs.temporal.io/references/sdk-metrics#request_latency
resource_slots_cpu_usagehttps://docs.temporal.io/references/sdk-metrics#resource_slots_cpu_usage
resource_slots_mem_usagehttps://docs.temporal.io/references/sdk-metrics#resource_slots_mem_usage
sticky_cache_hithttps://docs.temporal.io/references/sdk-metrics#sticky_cache_hit
sticky_cache_misshttps://docs.temporal.io/references/sdk-metrics#sticky_cache_miss
sticky_cache_sizehttps://docs.temporal.io/references/sdk-metrics#sticky_cache_size
sticky_cache_total_forced_evictionhttps://docs.temporal.io/references/sdk-metrics#sticky_cache_total_forced_eviction
unregistered_activity_invocationhttps://docs.temporal.io/references/sdk-metrics#unregistered_activity_invocation
worker_starthttps://docs.temporal.io/references/sdk-metrics#worker_start
worker_task_slots_availablehttps://docs.temporal.io/references/sdk-metrics#worker_task_slots_available
worker_task_slots_usedhttps://docs.temporal.io/references/sdk-metrics#worker_task_slots_used
workflow_active_thread_counthttps://docs.temporal.io/references/sdk-metrics#workflow_active_thread_count
workflow_cancelledhttps://docs.temporal.io/references/sdk-metrics#workflow_cancelled
workflow_completedhttps://docs.temporal.io/references/sdk-metrics#workflow_completed
workflow_continue_as_newhttps://docs.temporal.io/references/sdk-metrics#workflow_continue_as_new
workflow_endtoend_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_endtoend_latency
workflow_failedhttps://docs.temporal.io/references/sdk-metrics#workflow_failed
workflow_task_execution_failedhttps://docs.temporal.io/references/sdk-metrics#workflow_task_execution_failed
workflow_task_execution_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_execution_latency
workflow_task_queue_poll_emptyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_queue_poll_empty
workflow_task_queue_poll_succeedhttps://docs.temporal.io/references/sdk-metrics#workflow_task_queue_poll_succeed
workflow_task_replay_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_replay_latency
workflow_task_schedule_to_start_latencyhttps://docs.temporal.io/references/sdk-metrics#workflow_task_schedule_to_start_latency
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