The Input/Output Token Allocations (IOTA) columns provide the percentage of disk throughput that is 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. This field is reported only to the AMP vproc rows. The input or output token allocations are not limited by the I/O_COD setting. The data source for this field is located in the all_wd_full_potential_iota field in the /proc/tdmeter/limit_stats file. |
FLOAT |
CodPotentialIota | count | Sum of the potential input or output token allocations from all devices attached to the node for this workload. This field is reported only to the AMP vproc rows. The input or output token allocations are accumulated only when an I/O is pending on a device, and they are limited by the I/O_COD setting. The data source for this field is located in the wd_potential_iota field in the /proc/tdmeter/limit_stats file. |
FLOAT |
UsedIota | count | Sum of the used input or output token allocations from all devices attached to the node for this workload. This field is reported only to AMP vproc rows. The data source for this field is located in the wd_used_iota field in the /proc/tdmeter/limit_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 |