'DIU does not increase not more than 4 on copy activity

I am trying to copy data from GCP(Big Query) Azure Storage Gen2 parquet file with below configuration. Increased DIU from 4 to 16 but during runtime the DIU does not go beyond 4. Can you please help on how to increase the DIU to make my process faster?

  1. using preserve hierarchy
  2. Data size 12 millions with 3gb
  3. Throughput is 2.5mbps


Solution 1:[1]

To increase DIU for a copy activity just click on the activity, and under the Settings tab you can find the Data Integration Unit selector.

Increase DIU

Solution 2:[2]

I have the same issue. My source is Azure Blob (csv files), Staging is also Azure Blob and final destination is Snowflake with Azure. All in the same region/zone.

I have set DIU for 20 and Parallel to 4. But only has DIU as 4 utilized and Parallel to 1.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Martin Esteban Zurita
Solution 2 Asad Khan