Comment 39 for bug 1833322

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Fabio Augusto Miranda Martins (fabio.martins) wrote :

Sorry for the late feedback, but sharing here:

AWS docs regarding best practices regarding cpu-starvation [1] do not recommend disabling the irqbalance service. Quoting the doc:

> "Note: we do not recommend disabling irqbalance service. ENA driver doesn’t provide affinity hints, and if device reset happens while irqbalance is disabled, this might cause undesirable IRQ distribution with multiple IRQs landing on the same CPU core."

Other customers that have hit issues with irqbalance were running very specific workloads and were aware of the need to turn it off, so we would prefer to keep irqbalance.

[1] https://github.com/amzn/amzn-drivers/blob/master/kernel/linux/ena/ENA_Linux_Best_Practices.rst#cpu-starvation