doc-exports/docs/dms_rocketmq/umn/hrm-ug-018.html

DMS for RocketMQ Metrics

Introduction

This section describes the metrics that DMS for RocketMQ reports to Cloud Eye. You can view metrics and alarms by using the DMS for RocketMQ console.

Namespace

SYS.DMS

Instance Metrics

Table 1 Instance metrics

Metric ID	Metric Name	Description	Value Range	Unit	Conversion Rule	Dimension	Monitoring Period (Raw Data)
instance_produce_msg	Created Messages	Number of messages received by the instance per minute	> 0	Count	N/A	reliablemq_instance_id	1 minute
instance_consume_msg	Retrieved Messages	Number of messages retrieved from the instance per minute	> 0	Count	N/A	reliablemq_instance_id	1 minute
current_topics	Topics	Number of topics in the instance NOTE: This metric is supported for instances purchased on or after May 16, 2022.	≥ 0	Count	N/A	reliablemq_instance_id	1 minute
current_queues	Queues	Number of queues in the instance	≥ 0	Count	N/A	reliablemq_instance_id	1 minute
instance_accumulation	Accumulated Messages	Total number of messages accumulated in all consumer groups of the instance	≥ 0	Count	N/A	reliablemq_instance_id	1 minute

Topic Metrics

Table 2 Topic metrics

Metric ID	Metric Name	Description	Value Range	Unit	Conversion Rule	Dimension	Monitoring Period (Raw Data)
topic_produce_msg	Created Messages	Number of messages received by the topic per minute	> 0	Count	N/A	reliablemq_instance_id,reliablemq_topics	1 minute
topic_consume_msg	Retrieved Messages	Number of messages retrieved from the topic per minute	> 0	Count	N/A	reliablemq_instance_id,reliablemq_topics	1 minute
topic_produce_rate	Message Creation Rate	Number of messages received by the topic per second	> 0	Count/s	N/A	reliablemq_instance_id,reliablemq_topics	1 minute
topic_consume_rate	Message Retrieval Rate	Number of messages retrieved from the topic per second	> 0	Count/s	N/A	reliablemq_instance_id,reliablemq_topics	1 minute
topic_bytes_in_rate	Message Creation	Message creation traffic of the topic	≥ 0	Byte/s	1024(IEC)	reliablemq_instance_id,reliablemq_topics	1 minute
topic_bytes_out_rate	Message Retrieval	Message retrieval traffic of the topic	≥ 0	Byte/s	1024(IEC)	reliablemq_instance_id,reliablemq_topics	1 minute

Consumer Group Metrics

Table 3 Consumer group metrics

Metric ID	Metric Name	Description	Value Range	Unit	Conversion Rule	Dimension	Monitoring Period (Raw Data)
group_consume_msg	Retrieved Messages	Number of messages retrieved by the consumer group per minute NOTE: This metric is available only when Topic is set to All topics on the By Consumer Group tab page.	> 0	Count	N/A	reliablemq_instance_id,reliablemq_groups	1 minute
group_accumulation	Available Messages	Number of messages accumulated in the consumer group Unit: count NOTE: This metric is available only when Topic is set to All topics on the By Consumer Group tab page.	> 0	Count	N/A	reliablemq_instance_id,reliablemq_groups	1 minute
group_topic_consume_msg	Retrieved Messages	Number of messages in the specified topic that are retrieved by the consumer group per minute NOTE: This metric is available only when Topic is set to a specified topic on the By Consumer Group tab page.	> 0	Count	N/A	reliablemq_instance_id,reliablemq_groups,reliablemq_groups_topics	1 minute
group_topic_consume_rate	Message Retrieval Rate	Number of messages in the specified topic that are retrieved by the consumer group per second NOTE: This metric is available only when Topic is set to a specified topic on the By Consumer Group tab page.	> 0	Count/s	N/A	reliablemq_instance_id,reliablemq_groups,reliablemq_groups_topics	1 minute
group_topic_accumulation	Available Messages	Number of messages in a specific topic NOTE: This metric is available only when Topic is set to a specified topic on the By Consumer Group tab page.	> 0	Count	N/A	reliablemq_instance_id,reliablemq_groups,reliablemq_groups_topics	1 minute

Dead Letter Queue Metrics

Table 4 Dead letter queue metrics

Metric ID	Metric Name	Description	Value Range	Unit	Conversion Rule	Monitored Object (Dimension)	Monitoring Period (Raw Data)
dlq_accumulation	Messages in the Dead Letter Queue	Number of messages in the dead letter queue	≥ 0	Count	N/A	reliablemq_instance_id,reliablemq_dlq_topics	1 minute

If a monitored object has multiple dimensions, the dimensional level of specific metrics is required when you use APIs to query the metrics.

For example, to query the number of accumulated messages (group_accumulation) of a consumer group, its dimension is "reliablemq_instance_id,reliablemq_groups", indicating that reliablemq_instance_id is numbered 0 and reliablemq_groups is numbered 1.

• To query a single metric by calling the API, the reliablemq_groups dimension is used as follows:

  dim.0=reliablemq_instance_id,6a0df74a-fxxx-497bfdda6c8e&dim.1=reliablemq_groups,10

  6a0df74a-fxxx-497bfdda6c8e and 10 are the dimension values of reliablemq_instance_id and reliablemq_groups. For details about how to obtain them, see the guide in the Dimension table.

• To batch query metrics by calling the API, the reliablemq_groups dimension is used as follows:

  "dimensions": [ 
                   { 
                       "name": "reliablemq_instance_id", 
                       "value": "6a0df74a-fxxx-497bfdda6c8e"    
                   }, 
                   { 
                       "name": "reliablemq_groups", 
                       "value": "10" 
                   } 
               ]

  6a0df74a-fxxx-497bfdda6c8e and 10 are the dimension values of reliablemq_instance_id and reliablemq_groups. For details about how to obtain them, see the guide in the Dimension table.

Dimensions

Key	Value
reliablemq_instance_id	RocketMQ instance ID, for example, 6a0df74a-fxxx-497bfdda6c8e.
reliablemq_topics	Topic name, for example, topic-01.
reliablemq_groups	RocketMQ instance consumer group, for example, group-01.
reliablemq_groups_topics	Name of the topic consumed, for example, topic-01.
reliablemq_dlq_topics	Name of the dead letter queue of the RocketMQ instance, for example, DLQ_group-1.

Parent topic: Viewing Monitoring Metrics and Configuring Alarms