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 cluster 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.

   By default, the Storage and Cache tab shows the monitoring data in the last 1 hour.

   

   Metric	Metric name	Unit	Description
   OB Writable Memory	active_memstore_used major_freeze_trigger memstore_limit total_memstore_used	MB	Size of active MemStore Major compaction trigger threshold MemStore limit Total MemStore size
   Average I/O Operations per Second	io_read_count io_write_count	times/s	Number of reads from SSStore per second Number of writes to SSStore per second
   I/O Response Time	io_read_rt io_write_rt	ms	Average time spent on each SSStore read Average time spent on each SSStore write
   I/O Throughput	io_read_size io_write_size	byte	Amount of data read from SSStore per second Amount of data written to SSStore per second
   Cache Size	block_cache_size bloom_filter_cache_size clog_cache_size location_cache_size plan_cache_size row_cache_size	MB	Block cache size Bloom filter cache size Clog cache size Location cache size Execution 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	%	Block cache hit ratio Bloom filter cache hit ratio Clog cache hit ratio Location cache hit ratio Execution 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	Number of block cache requests Number of Bloom filter cache requests Number of Clog cache requests Number of location cache requests Number of row cache requests
   Binlog Disk Usage	ob_tenant_binlog_disk_used	GiB	Disk space used by binlogs
   OB Tenant Memory Usage	ob_tenant_memory_percent	%	Memory usage of the OB tenant
   Total Log Disk Size	ob_tenant_log_disk_total_bytes	GiB	Total size of the tenant's log disk
   Log Disk Usage	ob_tenant_log_disk_used_bytes	GiB	Used space of the tenant's log disk
   Data Space Usage	ob_tenant_server_required_size	GiB	Space occupied by tenant data
   Data Volume	ob_tenant_server_data_size	GiB	Volume of tenant data