# getDiskIOStat {#getdiskiostat}

**Parent topic:**[Functions](../../Functions/category.md)

## Syntax {#syntax}

`getDiskIOStat()`

## Arguments {#arguments}

None

## Details {#details}

Return a dictionary with 2 pairs.

-   *diskIOQueueDepths* is a vector indicating the length of each I/O queue. All I/O tasks in the same DolphinDB instance belong to the same I/O queue.

-   *diskIOConcurrnecyLevel* is an integer indicating the number of I/O queues.


## Examples {#examples}

```
getDiskIOStat()
/* output:
diskIOQueueDepths->[0]
diskIOConcurrnecyLevel->1
*/
```

