View storage and cache monitoring details

On the Storage and Cache tab of a tenant, you can view monitoring data such as the storage usage, read/write speed, and cache usage of the tenant.

Procedure

1. Log in to the OceanBase Cloud console.

2. In the left-side navigation pane, click Instances.

3. On the Instances page, find the target instance and click the expand icon next to the instance name.

4. Find the target tenant and click the tenant name.

5. On the Overview page of the tenant, click Metrics in the left-side navigation pane.

6. On the page that appears, click the Storage and Cache tab.

7. By default, the Storage and Cache tab shows the monitoring data in the last hour.

   • IO

     Performance metric	Metric name in English	Unit	Description
     IO Operations	io_read_count io_write_count	times/s	Number of read operations per second on the SSStore Number of write operations per second on the SSStore
     I/O Latency	io_read_rt io_write_rt	μs	Average read time for each read operation on the SSStore Average write time for each write operation on the SSStore
     IO Throughput	io_read_size io_write_size	byte	Data read from the SSStore per second Data written to the SSStore per second
     Local Disk IO Bandwidth	io_function_local_total_real_mbps and others	MiB/s	IO bandwidth of the local disk for different types of tasks Note For more information about the different types of tasks supported, see the monitoring page.
     OSS IO Bandwidth	io_function_remote_total_real_mbps and others	MiB/s	IO bandwidth of OSS for different types of tasks Note For more information about the different types of tasks supported, see the monitoring page.
     Local Disk IO Scheduling Time	io_function_local_other_groups_schedule_us and others	μs	IO scheduling time of the local disk for other tasks Note For more information about the different types of tasks supported, see the monitoring page.
     OSS IO Scheduling Time	io_function_remote_other_groups_schedule_us and others	μs	IO scheduling time of OSS for other tasks Note For more information about the different types of tasks supported, see the monitoring page.
     Local Disk IO Latency	io_function_local_other_groups_delay_us and others	μs	IO latency of the local disk for other tasks Note For more information about the different types of tasks supported, see the monitoring page.
     OSS IO Latency	io_function_remote_other_groups_delay_us and others	μs	IO latency of OSS for other tasks Note For more information about the different types of tasks supported, see the monitoring page.
     Local Disk IO Total Time	io_function_local_other_groups_total_us and others	μs	Total IO time of the local disk for other tasks Note For more information about the different types of tasks supported, see the monitoring page.
     OSS IO Total Time	io_function_remote_other_groups_total_us and others	μs	Total IO time of OSS for other tasks Note For more information about the different types of tasks supported, see the monitoring page.

   • Storage resources

     Performance metric	Metric name in English	Unit	Description
     Writable Data Memory	active_memstore_used major_freeze_trigger memstore_limit total_memstore_used	GiB	Size of active MEMStore Major freeze trigger threshold MEMStore limit Total size of MEMStore
     Binlog Log Disk Usage	ob_tenant_binlog_disk_used	GiB	Binlog log disk usage
     OB Tenant Memory Usage	ob_tenant_memory_percent	Percentage (%)	Memory usage of the OB tenant
     Total Log Disk	ob_tenant_log_disk_total_bytes	GiB	Total size of the log disk for the OB tenant
     Log Disk Usage	ob_tenant_log_disk_used_bytes	GiB	Log disk usage of the tenant
     Data Occupancy	ob_tenant_server_required_size	GiB	Data occupancy of the tenant
     Data Volume	ob_tenant_server_data_size	GiB	Data volume of the tenant

   • Cache

     Performance metric	Metric name	Unit	Description
     Cache size	block_cache_size bloom_filter_cache_size clog_cache_size location_cache_size plan_cache_size row_cache_size	MiB	Block cache size Bloom filter cache size Clog cache size Location cache size Plan cache size Row cache size
     Cache hit ratio	block_cache_hit_ratio bloom_filter_cache_hit_ratio clog_cache_hit_ratio location_cache_hit_ratio plan_cache_hit_ratio row_cache_hit_ratio	Percentage (%)	Block cache hit ratio Bloom filter cache hit ratio Clog cache hit ratio Location cache hit ratio Plan cache hit ratio Row cache hit ratio
     Cache request count	block_cache_req_total bloom_filter_cache_req_total clog_cache_req_total location_cache_req_total row_cache_req_total	Count	Block cache request count Bloom filter cache request count Clog cache request count Location cache request count Row cache request count