How long does it take to make a context switch? (2010)

Re:How long does it take to make a context switch? (2010) by gpderetta on Wednesday March 22, 2017 @01:33PM (#13932940)

Tough you can instruct the kernel not to run anything (not even interrupt handlers) on specific cores, except for manually pinned processes.

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Re:How long does it take to make a context switch? (2010) by monocasa on Wednesday March 22, 2017 @02:00PM (#13933178)

At a minimum you still need timer and TLB IPI shootdown interrupts hitting every core, just to have a working SMP system.

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Re:How long does it take to make a context switch? (2010) by gpderetta on Wednesday March 22, 2017 @02:06PM (#13933224)

the cpu does need to handle IPI of course but not sure about timers.

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