The Input/Output Token Allocations (IOTA) columns provide the percentage of disk throughput that is being used.
| Column Name | Mode | Description | Data Type |
|---|---|---|---|
| FullPotentialIota | count | Sum of the full potential input or output token allocations from all devices attached to the node. The input or output token allocations are not limited by the IO_COD setting. The value is computed by summing the cod_full_potential_iota field for each device in the /proc/tdmeter/disk_cod_stats file. |
FLOAT |
| CodPotentialIota | count | Sum of the potential input or output token allocations from all devices attached to the node. The input or output token allocations are accumulated only when an I/O is pending on a device, and they are limited by the IO_COD setting. The value is computed by summing the cod_allocated_iota field for each device in the /proc/tdmeter/disk_cod_stats file. |
FLOAT |
| UsedIota | count | Sum of the used input or output token allocations from all devices attached to the node. The value is computed by summing the cod_used_iota field for each device in the /proc/tdmeter/disk_cod_stats file. |
FLOAT |
| IoThrottleCount | count | Number of times an I/O was throttled. | FLOAT |
| IoThrottleTime | count | Total I/O Throttle Time in milliseconds. | FLOAT |
| IoThrottleTimeMax | max | Maximum I/O Throttle Time in milliseconds. | FLOAT |
| IoThrottleCntZeroIotas | count | Number of times an I/O was throttled due to no IOTA tokens available in the bucket. This data is included in the IoThrottleCount. | FLOAT |
| IoThrottleCntInsuffIotas | count | Number of times an I/O was throttled due to insufficient IOTA tokens available in the bucket. There were some IOTA tokens in the bucket, but not enough. This data is included in the IoThrottleCount. | FLOAT |
| IoThrottleCntInsuffIotasHL | count | Number of times an I/O was throttled due to insufficient IOTA tokens available in the bucket for Hard Limits. There were some IOTA tokens in the bucket, but not enough. This data is included in the IoThrottleCount. | FLOAT |
| IoThrottleCntMaxQD | count | Number of times an I/O was throttled due to the queue depth to the storage being at maximum. This data is not part of IoThrottleCount. | FLOAT |