This topic describes performance metrics related to process file descriptors in an OceanBase cluster. You can specify a statistical range to query the metrics in a single zone or on a single OBServer node of an OceanBase cluster.****
observer_fd
Definition
The number of file descriptors for the observer process on an OBServer node of a cluster within the specified statistical range.
Description
| Metric | Metric name | Unit |
|---|---|---|
| observer_fd | observer_fd_count | N/A |
Calculation expression
avg(process_fd_count{name=“observer”,@LABELS}) by (@GBLABELS)
observer_fd_usage
Definition
The file descriptor usage of the observer process on an OBServer node of a cluster within the specified statistical range.
Description
| Metric | Metric name | Unit |
|---|---|---|
| observer_fd_usage | observer_fd_usage | % |
Calculation expression
round(100 * avg(process_fd_count{name=“observer”,@LABELS}) by (@GBLABELS) / avg(observer_ulimit_max_fd_count{@LABELS}) by (@GBLABELS))