This topic describes the metrics of E-MapReduce (EMR) Serverless StarRocks monitored by CloudMonitor. The metrics involve multiple key performance parameters.
Metric | Type | Description |
serverless_starrocks_be_cpu | Cumulative value | The amount of time during which the CPU is used by a backend (BE). Different types of CPUs are categorized based on the mode tag. Unit: jiffy. Note A jiffy indicates the minimum unit of time for scheduling in a Linux operating system. The length of a jiffy varies based on the Linux kernel. In most cases, the length of a jiffy ranges from 1 ms to 10 ms. |
serverless_starrocks_be_cpu_idle | Instantaneous value | The CPU idle rate of a BE. |
serverless_starrocks_be_max_disk_io_util_percent | Average value | The maximum disk I/O usage of a BE. |
serverless_starrocks_be_disks_data_used_capacity | Instantaneous value | The size of disk space used by a BE. Unit: bytes. |
serverless_starrocks_be_disks_total_capacity | Instantaneous value | The total disk space of a BE. Unit: bytes. |
serverless_starrocks_be_disks_utilization | Instantaneous value | The disk space usage of a BE. |
serverless_starrocks_be_jemalloc_allocated_bytes | Instantaneous value | The size of memory that is allocated to a BE. Unit: bytes. |
serverless_starrocks_be_network_send_bytes | Cumulative value | The total amount of data sent over the network on a BE. Unit: bytes. |
serverless_starrocks_be_network_receive_bytes | Cumulative value | The total amount of data received over the network on a BE. Unit: bytes. |
serverless_starrocks_fe_jvm_heap_size_bytes | Instantaneous value | The Java virtual machine (JVM) heap memory of a frontend (FE). Unit: bytes. |
serverless_starrocks_fe_query_total | Cumulative value | The total number of queries that are run on an FE. |
serverless_starrocks_fe_query_err | Cumulative value | The total number of failed queries on an FE. |
serverless_starrocks_fe_query_latency_ms | Instantaneous value | The query latency statistics of an FE measured in percentiles. You can use the quantile tag to view the statistics of latency of different percentiles, such as 75th percentile latency and 95th percentile latency. Unit: milliseconds. |
serverless_starrocks_fe_qps | Cumulative value | The number of queries performed per second on an FE. |
serverless_starrocks_fe_query_timeout | Cumulative value | The number of queries that time out on an FE. |
serverless_starrocks_fe_job | Instantaneous value | The number of tasks that are in progress on an FE. |
serverless_starrocks_fe_connection_total | Cumulative value | The total number of connections to an FE. |