Article 53M7H [$] The many faces of "latency nice"

[$] The many faces of "latency nice"

by
corbet
from LWN.net on (#53M7H)
A task's "nice" value describes its priority within the completely fairscheduler; its semantics have roots in ancient Unix tradition. LastAugust, a "latencynice" parameter was proposed to provide similar control over a task'sresponse-time requirements. At the 2020 Power Management and Schedulingin the Linux Kernel summit (OSPM), Parth Shah, Chris Hyser, and DietmarEggemann ran a discussion about the latency nice proposal; it seems thateverybody agrees that it would be a useful feature to have, but there is awide variety of opinions about what it should actually do.
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