17.05 - I/O Hard Limits Columns - Teradata Database

Teradata Vantageā„¢ - Resource Usage Macros and Tables

prodname
Advanced SQL Engine
Teradata Database
vrm_release
17.00
17.05
created_date
June 2020
category
Administration
User Guide
featnum
B035-1099-170K
Column Name Mode Description Data Type
IoThrottleCount count Number of times an I/O was throttled. FLOAT
IoThrottleTime count Total I/O Throttle Time in centiseconds. FLOAT
IoThrottleTimeMax max Maximum I/O Throttle Time in centiseconds. 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
RawReadRespTot count

Total raw I/O Read Response Times in centiseconds.

The raw I/O Response Time is the time from when TDSCHED releases the I/O for execution until when the I/O is completed.

FLOAT
RawWriteRespTot count

Total raw I/O Write Response Times in centiseconds.

The raw I/O Response Time is the time from when TDSCHED releases the I/O for execution until when the I/O is completed.

FLOAT
RawReadRespMax max

Maximum raw I/O Read Response Time in centiseconds.

The raw I/O Response Time is the time from when TDSCHED releases the I/O for execution until when the I/O is completed.

FLOAT
RawWriteRespMax max

Maximum raw I/O Write Response Time in centiseconds.

The raw I/O Response Time is the time from when TDSCHED releases the I/O for execution until when the I/O is completed

.
FLOAT