View storage and cache monitoring details - ApsaraDB for OceanBase (Deprecated)

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

View storage and cache monitoring data

By default, the Storage and Cache tab displays the MemStore usage, storage read/write speed, and cache usage in the last hour. You can specify a time period or click fields in a chart to filter the data to view.

The following table describes the performance metrics.

Note

You can click the question mark (?) next to a monitoring metric to view its details.

Monitoring item	Metric	Unit	Description
MemStore	active_memstore_used major_freeze_trigger memstore_limit total_memstore_used	MiB	The MemStore usage of the tenant.
IOPS	io_read_count io_write_count	Times/s	The average number of I/O operations per second in the tenant.
IO RT	io_read_rt io_write_rt	μs	The average time consumed in each read or write operation in the tenant.
IO Throughput	io_read_size io_write_size	MiB	The average amount of data read or written per second in the tenant.
Cache Size	block_cache_size bloom_filter_cache_size clog_cache_size location_cache_size plan_cache_size row_cache_size	MiB	The size of a specific type of cache in the tenant.
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	%	The hit rate of a specific type of cache in the tenant.
Cache Request Count	block_cache_req_total bloom_filter_cache_req_total clog_cache_req_total location_cache_req_total row_cache_req_total	Times/s	The number of a specific type of cache requests per second in the tenant.
Vector Index Data Size	ob_tenant_vector_mem_hold_size ob_tenant_vector_mem_used_size ob_tenant_vector_mem_limit_size	MiB	The size of memory space held by vector index data of the tenant. The size of memory space used by vector index data of the tenant. The maximum memory space available for vector index data of the tenant.
Vector Index Data Usage (%)	ob_tenant_vector_mem_used_percent	%	The memory usage of vector index data.
Binlog Disk Usage	ob_tenant_binlog_disk_used	GiB	The size of disk space occupied by binlogs.
Memory Usage of OceanBase Tenant	ob_tenant_memory_percent	%	The memory usage of the tenant.
Total Log Disk Size	ob_tenant_log_disk_total_bytes	GiB	The total size of the log disk.
Log Disk Usage	ob_tenant_log_disk_used_bytes	GiB	The used space of the log disk.
Data Usage	ob_tenant_server_required_size	GiB	The disk space used by data.
Data Amount	ob_tenant_server_data_size	GiB	The volume of data.