This topic describes performance metrics related to the I/O throughput of an OceanBase cluster. You can specify a statistical period to the I/O throughput statistics in a single zone or on a single OBServer of an OceanBase cluster.
read
Definition
The amount of data read from SSStores of a cluster per second in the specified statistical period.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| read | io_read_byte | Megabytes |
Calculation expression
avg(rate(node_disk_read_bytes_total{@LABELS}[@INTERVAL])) by (@GBLABELS) / 1048576
write
Definition
The amount of data written to SSStores of a cluster per second in the specified statistical period.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| write | io_write_byte | Megabytes |
Calculation expression
avg(rate(node_disk_written_bytes_total{@LABELS}[@INTERVAL])) by (@GBLABELS) / 1048576