This topic describes monitoring metrics related to the input/output operations per second (IOPS) within an OceanBase Database tenant. You can specify a statistical period to query the IOPS statistics in a single zone or on a single OBServer of an OceanBase Database tenant.
ssstore_read
Definition
The number of SSStore reads in a tenant per second in the specified statistical period.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| ssstore_read | io_read_count | N/A |
Calculation expression
sum(rate(ob_sysstat{stat_id="60000",@LABELS}[@INTERVAL])) by (@GBLABELS)
SQL statements for metric collection
If you use OceanBase Database of a version earlier than V4.0, execute the following statement:
select /*+ MONITOR_AGENT READ_CONSISTENCY(WEAK) */ con_id tenant_id, stat_id, value from v$sysstat where stat_id IN (60000) and (con_id > 1000 or con_id = 1) and class < 1000If you use OceanBase Database V4.0 or later, execute the following statement:
select /* MONITOR_AGENT */ con_id tenant_id, stat_id, value from v$sysstat where stat_id IN (60000) and (con_id > 1000 or con_id = 1) and class < 1000
ssstore_write
Definition
The number of SSStore writes in a tenant per second in the specified statistical period.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| ssstore_write | io_write_count | times/s |
Calculation expression
sum(rate(ob_sysstat{stat_id="60003",@LABELS}[@INTERVAL])) by (@GBLABELS)
SQL statements for metric collection
If you use OceanBase Database of a version earlier than V4.0, execute the following statement:
select /*+ MONITOR_AGENT READ_CONSISTENCY(WEAK) */ con_id tenant_id, stat_id, value from v$sysstat where stat_id IN (60003) and (con_id > 1000 or con_id = 1) and class < 1000If you use OceanBase Database V4.0 or later, execute the following statement:
select /* MONITOR_AGENT */ con_id tenant_id, stat_id, value from v$sysstat where stat_id IN (60003) and (con_id > 1000 or con_id = 1) and class < 1000
clog_read
Definition
The number of clog reads in a tenant per second in the specified statistical period.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| clog_read | clog_io_read_count | times/s |
Calculation expression
sum(rate(ob_sysstat{stat_id="80007",@LABELS}[@INTERVAL])) by (@GBLABELS)
SQL statements for metric collection
If you use OceanBase Database V4.0 or later, execute the following statement:
select /* MONITOR_AGENT */ con_id tenant_id, stat_id, value from v$sysstat where stat_id IN (80007) and (con_id > 1000 or con_id = 1) and class < 1000
clog_write
Definition
The number of clog writes in a tenant per second in the specified statistical period.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| clog_write | clog_io_write_count | times/s |
Calculation expression
sum(rate(ob_sysstat{stat_id="80001",@LABELS}[@INTERVAL])) by (@GBLABELS)
SQL statements for metric collection
If you use OceanBase Database V4.0 or later, execute the following statement:
select /* MONITOR_AGENT */ con_id tenant_id, stat_id, value from v$sysstat where stat_id IN (80001) and (con_id > 1000 or con_id = 1) and class < 1000
