Performance Issues
Interrupts provide low overhead and good latency at low offered load, but degrade significantly at high interrupt rate unless care is taken to prevent several pathologies. These are various forms of livelocks, when the system spends all of its time processing interrupts, to the exclusion of other required tasks. Under extreme conditions, a large number of interrupts (like very high network traffic) may completely stall the system. To avoid such problems, an operating system must schedule network interrupt handling as carefully as it schedules process execution.
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