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KernelTrap: Debating The Merits Of Kernel Preemption

Oct 07, 2004, 22:00 (0 Talkback[s])


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"In response to a recent bug report on the lkml, Jeff Garzik, the maintainer of the Serial ATA subsystem and network device drivers, had some harsh words for kernel preemption. In the bug report it was mention that kernel preemption was enabled to which Jeff replied, 'I strongly recommend disabling kernel preemption. It is a hack that hides bugs.' The comment lead into an interesting discussion.

"Jeff's two main points were that kernel preemption potentially hides long latency code paths that should instead be fixed, and that it potentially introduces bugs.."

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