Stephen Hemminger wrote:
What about the latency that NAPI imposes? Right now there are certain applications that don't like NAPI because it add several more microseconds, and this may make it worse.
Latency is something that I think this approach will actually improve, at the expense of additional polling. Or is it the ksoftirqd scheduling latency that you are referring to?
Maybe a per-device flag or tuning parameters (like weight sysfs value)? or some other way to set low-latency values.
Yes. I'd like to think good defaults could be derived though, perhaps based on settings like CONFIG_PREEMPT, CONFIG_HIGH_RES_TIMER, CONFIG_HZ and maybe even bogomips / nr_cpus.
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