DPDK and energy efficiency
nick at foobar.org
Tue Feb 23 16:47:53 UTC 2021
Etienne-Victor Depasquale wrote on 23/02/2021 16:03:
> "we found that a poll mode driver (PMD)
> thread accounted for approximately 99.7 percent
> CPU occupancy (a full core utilization)."
interrupt-driven network drivers generally can't compete with polled
mode drivers at higher throughputs on generic CPU / PCI card systems.
On this style of config, you optimise your driver parameters based on
what works best under the specific conditions.
Polled mode drivers have been around for a while, e.g.
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