This system table describes monitoring information (the maximum values in the cluster). All users have access to the table.
| Column Name | Description |
|---|---|
| CLUSTER_NAME | Name of the cluster |
| MEASURE_TIME | Timestamp of the measurement |
| LOAD | System load (equals the load value of program up time) |
| CPU | CPU utilization in percentage (of the database instance, maximum across all nodes) |
| TEMP_DB_RAM | Usage of temporary DB memory in MiB (of the database instance, maximum across all nodes) |
| PERSISTENT_DB_RAM | Usage of modified, persistent DB memory in MiB (of the database instance, maximum across all nodes) |
| HDD_READ | Hard disk read ratio in MiB per second (per node, maximum across all nodes) |
| HDD_WRITE | Hard disk write ratio in MiB per second (per node, maximum across all nodes) |
| LOCAL_READ_SIZE | Data size read from local (non-cache) storage in MiB, (of the database instance, maximum across all nodes) |
| LOCAL_READ_DURATION | Time in seconds spent reading data from local (non-cache) storage, (of the database instance, maximum across all nodes) |
| LOCAL_WRITE_SIZE | Data size written to local (non-cache) storage in MiB, (of the database instance, maximum across all nodes) |
| LOCAL_WRITE_DURATION | Time in seconds spent writing data to local (non-cache) storage, (of the database instance, maximum across all nodes) |
| CACHE_READ_SIZE | Data size read from cache in MiB, (of the database instance, maximum across all nodes) |
| CACHE_READ_DURATION | Time in seconds spent reading data from cache, (of the database instance, maximum across all nodes) |
| CACHE_WRITE_SIZE | Data size written to cache in MiB, (of the database instance, maximum across all nodes) |
| CACHE_WRITE_DURATION | Time in seconds spent writing data to cache, (of the database instance, maximum across all nodes) |
| REMOTE_READ_SIZE | Data size read from remote storage in MiB, (of the database instance, maximum across all nodes) |
| REMOTE_READ_DURATION | Time in seconds spent reading data from remote storage, (of the database instance, maximum across all nodes) |
| REMOTE_WRITE_SIZE | Data size written to remote storage in MiB, (of the database instance, maximum across all nodes) |
| REMOTE_WRITE_DURATION | Time in seconds spent reading data from remote storage in MiB, (of the database instance, maximum across all nodes) |
| NET | Network traffic ratio in MiB per second (sum of send/receive, per node, maximum across all nodes) |
| SWAP |
Swap ratio in MiB per second (maximum across all nodes). A value higher than 0 can indicate a system configuration issue. |