better performance. The difference will be more than 10 times.
To enable WC, there are 2 ways.
-- Insert igb_uio with ``wc_active=1`` flag if use igb_uio driver.
+- Insert igb_uio with ``wc_activate=1`` flag if use igb_uio driver.
.. code-block:: console
- insmod igb_uio.ko wc_active=1
+ insmod igb_uio.ko wc_activate=1
- Enable WC for NTB device's Bar 2 and Bar 4 (Mapped memory) manually.
The reference is https://www.kernel.org/doc/html/latest/x86/mtrr.html