Common metrics in ARMS Application Monitoring - Application Real-Time Monitoring Service

This topic describes the common metrics in ARMS Application Monitoring. You can use these metrics to create custom Grafana dashboards.

Important

Applications connected through Managed Service for OpenTelemetry support only business metrics. Other metrics, such as JVM metrics and system metrics, are not supported.

Business metrics

Common dimensions

Dimension name	Dimension key
Service name	service
Service PID	pid
Machine IP	serverIp
Interface	rpc

Metric list

All access types include the following metrics. When you run a query, replace $callType with a specific access type. For more information about access types, see Service access types and available dimensions.

For example, to query the number of requests for an HTTP service, change arms_$callType_requests_count to arms_http_requests_count.

Metric name	Metric	Metric type	Collection interval	Unit	Dimensions
Request count	arms_$callType_requests_count	Gauge	15 s	None	The dimensions vary based on the service access type. For more information, see Service access types and available dimensions.
Error request count	arms_$callType_requests_error_count	Gauge	15 s	None
Request duration	arms_$callType_requests_seconds	Gauge	15 s	Seconds
Slow request count	arms_$callType_requests_slow_count	Gauge	15 s	None
Request duration quantiles	arms_$callType_requests_latency_seconds	Summary	15 s	Seconds	This dimension is available only when the service access type is HTTP and quantile statistics are enabled. To enable quantile statistics, see Advanced Settings. Quantile dimension: 0.5 0.75 0.90 0.99

Note

Except for quantile metrics, the preceding metrics are all of the Gauge type. This means the value of each data point represents the cumulative total value within the collection interval. This is different from metrics generated by open source frameworks. For example, to calculate the average queries per second (QPS) over one minute, the Prometheus Query Language (PromQL) expression for an ARMS metric is sum_over_time(arms_$callType_requests_count[1m])/60. For an open source framework, the expression is typically rate(http_server_requests_count[1m]).

Metric storage instance description

Business metrics are stored in the detailed metric library (metricstore-apm-metrics-detail).

Aggregated business metrics

Business metrics create a separate metric for each call type. This makes the PromQL expression long and complex when a single application has multiple call types, such as HTTP and Dubbo.
Business metrics record all observation dimensions. However, not all dimensions are needed in some statistical scenarios. This causes poor performance when you directly query business metrics in some scenarios.

To resolve these issues, ARMS provides aggregated business metrics.

Metric description

Aggregated business metrics are classified into the following categories:

General
Records the request count, error count, slow request count, and average request duration for all access types.
Database
Records the request count, error count, slow request count, and average request duration for database access types.
SQL class
Records the request count, error count, slow request count, and average request duration for database access types. Compared with the database category, this category adds the SQL dimension.
Exception
Records the request count and average request duration for all access types when an exception occurs.
Status code
Records the request count for different status codes in HTTP scenarios.
Quantile
Records the request duration quantiles for all access types.

Except for the quantile category, each major category has two types of metrics. One is the normal aggregated metric, named in the xxx_raw format. The other is the reduced-dimension metric, named in the xxx_ign_x_y format, where x and y are the aggregated dimensions excluded from the metric.

Metric type and collection interval

Unless otherwise specified, all aggregated business metrics are of the Gauge type, and the collection interval is 15 seconds.

Common dimensions

The following dimensions exist in every aggregated metric:

Dimension	Description
pid	Application PID
service	Application name
serverIp	Instance IP
source	Metric source: apm Indicates an application connected through an ARMS agent. xtrace Indicates an application connected through Managed Service for OpenTelemetry. ebpf Indicates an application connected through an Application Monitoring eBPF agent.

Metric list

Metric category	Metric name	Metric	Unit	Other dimensions
General	Request count	arms_app_requests_count_raw	Unit	callType: Access type rpc: Interface name prpc: Upstream interface name ppid: Upstream application PID parent: Upstream application name endpoint: When callType is http_client, this indicates the peer interface. In other scenarios, it indicates the remote address. destId: When callType is a database type, this indicates the database name. In other scenarios, it indicates the remote address.
		arms_app_requests_count_ign_destid_endpoint_parent_ppid_prpc_rpc	Unit	Excludes the destId, endpoint, parent, ppid, prpc, and rpc dimensions.
		arms_app_requests_count_ign_destid_endpoint_rpc_prpc	Unit	Excludes the destId, endpoint, rpc, and prpc dimensions.
		arms_app_requests_count_ign_destid_endpoint_parent_ppid_prpc	Item	Excludes the destId, endpoint, parent, ppid, and prpc dimensions.
		arms_app_requests_count_ign_parent_ppid_prpc_rpc	Unit	Excludes the parent, ppid, prpc, and rpc dimensions.
	Error request count	arms_app_requests_error_count_raw	item	callType: Access type rpc: Interface name prpc: Upstream interface name ppid: Upstream application PID parent: Upstream application name endpoint: When callType is http_client, this indicates the peer interface. In other scenarios, it indicates the remote address. destId: When callType is a database type, this indicates the database name. In other scenarios, it indicates the remote address.
		arms_app_requests_error_count_ign_destid_endpoint_rpc_prpc	Unit	Excludes the destId, endpoint, rpc, and prpc dimensions.
		arms_app_requests_error_count_ign_destid_endpoint_parent_ppid_prpc	Unit	Excludes the destId, endpoint, parent, ppid, and prpc dimensions.
		arms_app_requests_error_count_ign_parent_ppid_prpc_rpc	Unit	Excludes the parent, ppid, prpc, and rpc dimensions.
		arms_app_requests_error_count_ign_parent_ppid_prpc_rpc	Count	Excludes the parent, ppid, prpc, and rpc dimensions.
	Slow request count	arms_app_requests_slow_count_raw	unit	callType: Access type rpc: Interface name prpc: Upstream interface name ppid: Upstream application PID parent: Upstream application name endpoint: When callType is http_client, this indicates the peer interface. In other scenarios, it indicates the remote address. destId: When callType is a database type, this indicates the database name. In other scenarios, it indicates the remote address.
		arms_app_requests_slow_count_ign_destid_endpoint_parent_ppid_prpc_rpc	Item	Excludes the destId, endpoint, parent, ppid, prpc, and rpc dimensions.
		arms_app_requests_slow_count_ign_destid_endpoint_rpc_prpc	Unit	Excludes the destId, endpoint, rpc, and prpc dimensions.
		arms_app_requests_slow_count_ign_destid_endpoint_parent_ppid_prpc	Item	Excludes the destId, endpoint, parent, ppid, and prpc dimensions.
		arms_app_requests_slow_count_ign_parent_ppid_prpc_rpc	Item	Excludes the parent, ppid, prpc, and rpc dimensions.
	Request duration	arms_app_requests_seconds_raw	Seconds	callType: Access type rpc: Interface name prpc: Upstream interface name ppid: Upstream application PID parent: Upstream application name endpoint: When callType is http_client, this indicates the peer interface. In other scenarios, it indicates the remote address. destId: When callType is a database type, this indicates the database name. In other scenarios, it indicates the remote address.
		arms_app_requests_seconds_ign_destid_endpoint_parent_ppid_prpc_rpc	Seconds	Excludes the destId, endpoint, parent, ppid, prpc, and rpc dimensions.
		arms_app_requests_seconds_ign_destid_endpoint_rpc_prpc	Seconds	Excludes the destId, endpoint, rpc, and prpc dimensions.
		arms_app_requests_seconds_ign_destid_endpoint_parent_ppid_prpc	Seconds	Excludes the destId, endpoint, parent, ppid, and prpc dimensions.
		arms_app_requests_seconds_ign_parent_ppid_prpc_rpc	Seconds	Excludes the parent, ppid, prpc, and rpc dimensions.
Database	Database request count	arms_db_requests_count_raw	Unit	callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name
	Database request count	arms_db_requests_count_ign_rpc	Item	Excludes the interface dimension.
	Database request error count	arms_db_requests_error_count_raw	Unit	callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name
	Database request error count	arms_db_requests_error_count_ign_rpc	Unit	Excludes the interface dimension.
	Database slow request count	arms_db_requests_slow_count_raw	Item	callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name
	Database slow request count	arms_db_requests_slow_count_ign_rpc	Count	Excludes the interface dimension.
	Database request duration	arms_db_requests_seconds_raw	Seconds	callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name
	Database request duration	arms_db_requests_seconds_ign_rpc	Seconds	Excludes the interface dimension.
SQL Class	SQL request count	arms_sql_requests_count_raw		callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name sqlId: SQL statement ID
	SQL request count	arms_sql_requests_count_ign_rpc		Excludes the interface dimension.
	SQL request error count	arms_sql_requests_error_count_raw	Unit	callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name sqlId: SQL statement ID
	SQL request error count	arms_sql_requests_error_count_ign_rpc	Item	Excludes the interface dimension.
	SQL slow request count	arms_sql_requests_slow_count_raw	Count	callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name sqlId: SQL statement ID
	SQL slow request count	arms_sql_requests_slow_count_ign_rpc	Unit	Excludes the interface dimension.
	SQL request duration	arms_sql_requests_seconds_raw	Seconds	callType: Access type rpc: Interface name endpoint: Database instance address destId: Database name sqlId: SQL statement ID
	SQL request duration	arms_sql_requests_seconds_ign_rpc	Seconds	Excludes the interface dimension.
Exception	Exception request count	arms_exception_requests_count_raw	Item	callType: Access type rpc: Interface name endpoint: When callType is http_client, this indicates the peer interface. In other scenarios, it indicates the remote address. destId: When callType is a database type, this indicates the database name. In other scenarios, it indicates the remote address. excepInfo: Exception encoding method excepType: Exception encoding ID excepName: Exception name
		arms_exception_requests_count_ign_destid_endpoint_rpc	Unit	Excludes the destid, endpoint, and rpc dimensions.
		arms_exception_requests_count_ign_destid_endpoint	Unit	Excludes the destid and endpoint dimensions.
	Exception request duration	arms_exception_requests_seconds_raw	Seconds	callType: Access type rpc: Interface name endpoint: When callType is http_client, this indicates the peer interface. In other scenarios, it indicates the remote address. destId: When callType is a database type, this indicates the database name. In other scenarios, it indicates the remote address. excepInfo: Exception encoding method excepType: Exception encoding ID excepName: Exception name
		arms_exception_requests_seconds_ign_destid_endpoint_rpc	Seconds	Excludes the destid, endpoint, and rpc dimensions.
		arms_exception_requests_seconds_ign_destid_endpoint	Seconds	Excludes the destid and endpoint dimensions.
Status code	Request count by status code	arms_requests_by_status_count_raw	Count	rpc: Interface name status status code: 200: HTTP status code is 200 2xx: HTTP status code is greater than 200 and less than 300 3xx: HTTP status code is greater than or equal to 300 and less than 400 4xx: HTTP status code is greater than or equal to 400 and less than 500 5xx: HTTP status code is greater than or equal to 500
Status code	Request count by status code	arms_requests_by_status_count_ign_rpc	Item	Excludes the interface dimension.
Quantile	Request duration quantiles Note Supported by agent V4.x and later.	arms_uni_requests_latency_seconds		callType: Access type rpc: Interface name quantile: 0.5: 50th quantile 0.75: 75th quantile 0.90: 90th quantile 0.99: 99th quantile endpoint: When callType is http_client, this indicates the peer interface. In other scenarios, it indicates the remote address. destId: When callType is a database type, this indicates the database name. In other scenarios, it indicates the remote address. excepInfo: Exception encoding method excepType: Exception encoding ID excepName: Exception name Status code: 200: HTTP status code is 200 2xx: HTTP status code is greater than 200 and less than 300 3xx: HTTP status code is greater than or equal to 300 and less than 400 4xx: HTTP status code is greater than or equal to 400 and less than 500 5xx: HTTP status code is greater than or equal to 500

Usage example

How to select a metric to count the requests of all application interfaces using PromQL

Find a metric that provides the request count for interfaces. The general category of metrics meets this requirement.
The statistical result requires only the interface dimension. Other dimensions, such as upstream interface, upstream application, and remote address, are not required. When you select a specific metric, make sure that the metric includes the interface dimension and as few other dimensions as possible.

Based on the preceding analysis, the optimal metric is arms_app_requests_count_ign_destid_endpoint_parent_ppid_prpc.

Metric storage instance description

The following metrics are stored in the core metric library (metricstore-apm-metrics):

arms_app_requests_{metric}_ign_destid_endpoint_parent_ppid_prpc_rpc
arms_app_requests_{metric}_ign_destid_endpoint_rpc_prpc
arms_app_requests_{metric}_ign_destid_endpoint_parent_ppid_prpc

Other aggregated business metrics are stored in the detailed metric library (metricstore-apm-metrics-detail).

JVM metrics

Common dimensions

Dimension name	Dimension key
Service name	service
Service PID	pid
Machine IP	serverIp

Metric list

Metric name	Metric	Metric type	Collection interval	Unit	Dimensions
Total GC count	arms_jvm_gc_total	Counter	15 s	None	Generational GC area: Young: young generation space Old: old generation space Cause (GC cause) (supported by agent V4.4.0 and later): System.gc(), Heap Dump Initiated GC, Allocation Failure, and more. Expand to view detailed descriptions of GC causes System.gc(): This cause is triggered when the program explicitly calls `System.gc()` to request garbage collection. FullGCAlot / ScavengeAlot: These causes may be related to testing or debugging scenarios where frequent full GCs or minor GCs (scavenges) are intentionally triggered. Allocation Profiler: This GC cause may involve memory allocation profiling to better understand memory usage. JvmtiEnv ForceGarbageCollection: Indicates that the Java Virtual Machine Tool Interface (JVMTI) has requested a forced garbage collection. Heap Inspection Initiated GC & Heap Dump Initiated GC: These are typically not regular operations but are used to inspect the heap or obtain a heap dump. WhiteBox Initiated Young/Full GC & Run to Breakpoint: These are triggered by WhiteBox tests, which are typically used for internal JVM testing purposes. No GC: The JVM may trigger a GC based on internal heuristic algorithms, such as predicting heap usage trends in the Concurrent Mark Sweep (CMS) algorithm, rather than a specific condition like out of memory. Therefore, it is displayed as No GC. Allocation Failure: A garbage collection triggered because the JVM could not allocate memory for a new object, indicating potential memory pressure. CodeCache GC Threshold / Aggressive: Involves the code cache, which stores compiled code. A GC may be triggered when the cache reaches a certain threshold or needs to be managed aggressively. Metadata GC Threshold / Clear Soft References: A GC triggered by the metadata space threshold or the clearing of soft references, which can free up memory without affecting application execution. G1 Evacuation Pause / Compaction Pause / Humongous Allocation / Periodic Collection: These are specific GC causes related to the G1 garbage collector, which is optimized for low pause times. Diagnostic Command: Triggered by a diagnostic command, typically for internal monitoring or diagnostic purposes. Shenandoah GC Causes: These are related to the Shenandoah garbage collector, which aims to reduce pause times through concurrent operations. Z Garbage Collector Causes (Timer, Warmup, etc.): These are specific to ZGC (Z Garbage Collector) and focus on performance tuning aspects, such as warmup, allocation rate, and proactive measures. ILLEGAL VALUE: Indicates an illegal or unrecognized garbage collection cause value, acting as a safeguard against unexpected situations.
Total GC duration	arms_jvm_gc_seconds_total	Counter	15 s	Seconds
GC count per interval	arms_jvm_gc_delta	Gauge	15 s	None
GC duration per interval	arms_jvm_gc_seconds_delta	Gauge	15 s	Seconds
JVM thread count	arms_jvm_threads_count	Gauge	15 s	None	State (thread state): Blocked: Blocked state Live: Active state Daemon: Daemon state New: New state Dead-lock: Deadlocked state Runnable: Runnable state Terminated: Terminated state Timed-wait: Timed waiting state Wait: Waiting state
Initial size of the JVM memory region	arms_jvm_mem_init_bytes	Gauge	15 s	Bytes	Area: Heap: Heap area Nonheap: Non-heap area Total: Total ID (region breakdown): Eden: Eden space Old: Old generation space Survivor: Survivor space Metaspace: The metadata area Code cache: Code cache Compressed class space Total: Total
Maximum size of the JVM memory region	arms_jvm_mem_max_bytes	Gauge	15 s	Bytes
Used size of the JVM memory region	arms_jvm_mem_used_bytes	Gauge	15 s	Bytes
Committed size of the JVM memory region	arms_jvm_mem_committed_bytes	Gauge	15 s	Bytes
Usage ratio of the JVM memory region	arms_jvm_mem_usage_ratio	Gauge	15 s	Ratio (0 to 1)
JVM loaded classes	arms_class_load_loaded	Counter	15 s	None	None
JVM unloaded classes	arms_class_load_un_loaded	Counter	15 s	None	None
JVM buffer pool size	arms_jvm_buffer_pool_total_bytes	Gauge	15 s	Bytes	ID (region): Direct Mapped
Used size of the JVM buffer pool	arms_jvm_buffer_pool_used_bytes	Gauge	15 s	Bytes
Number of JVM buffer pools	arms_jvm_buffer_pool_count	Gauge	15 s	None
Number of open file descriptors	arms_file_desc_open_count	Gauge	15 s	None	None
Ratio of open file descriptors (open/maximum allowed)	arms_file_desc_open_ratio	Gauge	15 s	Ratio (0 to 1)	None

Metric storage instance description

JVM metrics are stored in the core metric library (metricstore-apm-metrics).

System metrics

Common dimensions

Dimension name	Dimension key
Service name	service
Service PID	pid
Machine IP	serverIp

Metric list

Metric name	Metric	Metric type	Collection interval	Unit
CPU idle percentage	arms_system_cpu_idle	Gauge	15 s	Percentage
CPU I/O wait percentage	arms_system_cpu_io_wait	Gauge	15 s	Percentage
CPU system percentage	arms_system_cpu_system	Gauge	15 s	Percentage
CPU user percentage	arms_system_cpu_user	Gauge	15 s	Percentage
System load (1 minute)	arms_system_load	Gauge	15 s	None
Free disk space	arms_system_disk_free_bytes	Gauge	15 s	Bytes
Total disk space	arms_system_disk_total_bytes	Gauge	15 s	Bytes
Disk usage	arms_system_disk_used_ratio	Gauge	15 s	Ratio (0 to 1)
Memory buffer size	arms_system_mem_buffers_bytes	Gauge	15 s	Bytes
Memory cache size	arms_system_mem_cached_bytes	Gauge	15 s	Bytes
Free memory size	arms_system_mem_free_bytes	Gauge	15 s	Bytes
Free swap memory size	arms_system_mem_swap_free_bytes	Gauge	15 s	Bytes
Swap memory size	arms_system_mem_swap_total_bytes	Gauge	15 s	Bytes
Memory size	arms_system_mem_total_bytes	Gauge	15 s	Bytes
Used memory size	arms_system_mem_used_bytes	Gauge	15 s	Bytes
Inbound network traffic size	arms_system_net_in_bytes	Gauge	15 s	Bytes
Outbound network traffic size	arms_system_net_out_bytes	Gauge	15 s	Bytes
Inbound network errors	arms_system_net_in_err	Gauge	15 s	None
Outbound network errors	arms_system_net_out_err	Gauge	15 s	None

Metric storage instance description

System metrics are stored in the core metric library (metricstore-apm-metrics).

Thread pool/Connection pool metrics

Common dimensions

Dimension name	Dimension key
Service name	service
Service PID	pid
Machine IP	serverIp
Thread pool name (supported by agent versions earlier than 4.1.x)	name
Thread pool type (supported by agent versions earlier than 4.1.x)	type

Metric list

Agent versions 4.1.x and later

Thread pool metrics

Metric name	Metric	Metric type	Collection interval	Dimensions
Core thread count	arms_thread_pool_core_pool_size	Gauge	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Maximum thread count	arms_thread_pool_max_pool_size	Gauge	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Active thread count	arms_thread_pool_active_thread_count	Gauge	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Current thread count	arms_thread_pool_current_thread_count	Gauge	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Peak thread count in the thread pool (the highest number of threads since the pool was created)	arms_thread_pool_max_thread_count	Gauge	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Scheduled task count	arms_thread_pool_scheduled_task_count	Counter	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Completed task count	arms_thread_pool_completed_task_count	Counter	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Rejected task count	arms_thread_pool_rejected_task_count	Counter	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.
Task queue size	arms_thread_pool_queue_size	Gauge	15 s	thread_name_pattern: The thread name pattern, such as `http-nio-8080-*`. thread_pool_usage: The purpose of the thread pool, such as Tomcat, Dubbo, or Undertow.

Connection pool metrics

Metric description	Metric name	Metric type	Collection interval	Dimensions
Connections	arms_connection_pool_connection_count	Gauge	15 s	state: Connection state. used idle pool_type: Connection pool type, such as Druid or c3p0. url: Database connection string.
Minimum idle connections	arms_connection_pool_connection_min_idle_count	Gauge	15 s	pool_type: Connection pool type, such as Druid or c3p0. url: Database connection string.
Maximum idle connections	arms_connection_pool_connection_max_idle_count	Gauge	15 s	pool_type: Connection pool type, such as Druid or c3p0. url: Database connection string.
Maximum connections	arms_connection_pool_connection_max_count	Gauge	15 s	pool_type: Connection pool type, such as Druid or c3p0. url: Database connection string.
Pending connection requests	arms_connection_pool_pending_request_count	Counter	15 s	pool_type: Connection pool type, such as Druid or c3p0. url: Database connection string.

Agent versions earlier than 4.1.x

Metric name	Metric	Metric type	Collection interval	Dimensions
Thread pool core size	arms_threadpool_core_size	Gauge	15 s	None
Thread pool maximum size	arms_threadpool_max_size	Gauge	15 s	None
Thread pool active size	arms_threadpool_active_size	Gauge	15 s	None
Thread pool queue size	arms_threadpool_queue_size	Gauge	15 s	None
Thread pool current size	arms_threadpool_current_size	Gauge	15 s	None
Number of tasks in different states in the thread pool	arms_threadpool_task_total	Gauge	15 s	Status (task state): Scheduled: Scheduled Completed: Completed Rejected: Rejected

Metric storage instance description

Thread pool and connection pool metrics are stored in the core metric library (metricstore-apm-metrics).

Scheduled task metrics

The following metrics are available only for scheduled tasks.

Common dimensions

Dimension name	Dimension key
Service name	service
Service PID	pid
Machine IP	serverIp
Task ID	rpc

Metric list

Metric name	Metric	Metric type	Collection interval	Unit
Scheduling delay	arms_$callType_delay_milliseconds	Gauge	15 s	ms

Metric storage instance description

Scheduled task metrics are stored in the detailed metric library (metricstore-apm-metrics-detail).

Go runtime metrics

Metric list

Metric name	Metric	Metric type	Collection interval
Application uptime (ms)	arms_golang_runtime_uptime	Int64Counter	15 s
Number of goroutines in the current application	arms_golang_process_runtime_go_goroutines	Gauge	15 s
Heap object memory (bytes)	arms_golang_process_runtime_go_mem_heap_alloc	Gauge	15 s
Unallocated or reclaimed heap memory	arms_golang_process_runtime_go_mem_heap_idle	Gauge	15 s
Used heap memory	arms_golang_process_runtime_go_mem_heap_inuse	Gauge	15 s
Allocated and live heap objects	arms_golang_process_runtime_go_mem_heap_objects	Gauge	15 s
Memory in HeapIdle that has been released to the operating system	arms_golang_process_runtime_go_mem_heap_released	Gauge	15 s
Size of virtual memory requested from the system	arms_golang_process_runtime_go_mem_heap_sys	Gauge	15 s
Number of current live objects	arms_golang_process_runtime_go_mem_live_objects	Gauge	15 s
Number of GC cycles since the program started	arms_golang_process_runtime_go_gc_count	Gauge	15 s
Cumulative stop-the-world garbage collection pause time, which is the unavailable time	arms_golang_process_runtime_go_gc_pause_total_ns	Int64Counter	15 s
GC pause time distribution	arms_golang_process_runtime_go_gc_pause_ns	Int64Histogram	15 s

Metric storage instance description

Go runtime metrics are stored in the core metric library (metricstore-apm-metrics).

Service access types and available dimensions

Client-side types

Access types
- http_client
- dubbo_client
- hsf_client
- dsf_client
- notify_client
- grpc_client
- thrift_client
- sofa_client
- mq_client
- kafka_client
Dimensions
- parent: Upstream service name
- ppid: Upstream service PID
- destId: Extended information about the request peer
- endpoint: Request peer address
- excepType: Exception ID
- excepInfo: Exception ID encoding rule
- excepName: Exception name
- stackTraceId: Stack trace ID

DB types

Access types
- mysql
- oracle
- mariadb
- postgresql
- ppas
- sqlserver
- mongodb
- dmdb
Dimensions
- parent: Upstream service name
- ppid: Upstream service PID
- destId: Database name
- endpoint: Database address
- excepType: Exception ID
- excepInfo: Exception ID encoding rule
- excepName: Exception name
- stackTraceId: Stack trace ID
- sqlId: SQL statement ID

Server-side types

Access types
- http
- dubbo
- hsf
- dsf
- user_method
- mq
- kafka
- grpc
- thrift
- sofa
Dimensions
- prpc: Upstream interface
- parent: Upstream service name
- ppid: Upstream service PID
- Endpoint: The address of the service.
- excepType: Exception ID
- excepInfo: Exception ID encoding rule
- excepName: Exception name
- stackTraceId: Stack trace ID

Scheduled task types

Access types
- xxl_job
- spring_scheduled
- quartz
- elasticjob
- jdk_timer
- schedulerx
Dimensions
- prpc: Upstream interface
- parent: Upstream service name
- ppid: Upstream service PID
- excepType: Exception ID
- excepInfo: Exception ID encoding rule
- excepName: Exception name
- stackTraceId: Stack trace ID