[dpdk-users] RTE_LIBRTE_I40E_ITR_INTERVAL

[Dorsett, Michal]

Hi,

We are using DPDK 16.07.

In the documentation for the libpmd_i40e I read the following explanation re. RTE_LIBRTE_I40E_ITR_INTERVAL:

Due to the hardware design, the interrupt signal inside NIC is needed for per
packet descriptor write-back. The minimum interval of interrupts could be set
at compile time by ``CONFIG_RTE_LIBRTE_I40E_ITR_INTERVAL`` in configuration files.
Though there is a default configuration, the interval could be tuned by the
users with that configuration item depends on what the user cares about more,
performance or per packet latency.

However, I don't quite understand whether a larger interval should be set for performance, or a lower (I am interested in performance).

Thanks,

Michal Dorsett
Developer, Strategic IP Group
Desk: +972 962 4350
Mobile: +972 50 771 6689
Verint Cyber Intelligence
www.verint.com<http://www.verint.com/>



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