The tech committee would like to announce a new accepted talk.
Eric Dumazet will be talking about Busypolling next generation
Summary Description of the talk.
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In this talk I will present the busy polling principles and history in
linux kernel, and the ongoing work.
Back in linux-3.11, Eliezer Tamir added what he called low latency
socket polling. Idea is let recvmsg() callers directly call a driver
polling function, burning cycles an avoiding potential expensive
scheduler calls to reduce latencies. linux-4.11 has no more
ndo_busy_poll() method and busy polling is now generic for all NAPI drivers.
Next work is to opt-in drivers in a mode where one (or multiple) cpu
would be dedicated to run the low-level part of the networking stack, ie
shifting from an interrupt driven model to a busy polling one.
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cheers,
jamal
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