Kostis Kaffes and Christos Kozyrakis argue that preemptive scheduling
is in fact _a good thing_ in the strive for microsecond-scale latencies for
application level communication.
Most purveyors of microsec solutions move datapath
processing to user space so as to avoid pre-emption and
have better control of latencies.
In this talk Kostis and Christos describe their approach: Shinjuku
More info:
https://netdevconf.org/0x13/session.html?talk-microsec
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Netdev 0x13 - The Need for Preemptive Scheduling in Microsecond scale Systems | NatokHD