2 ms·
I think in this case, unless they were running an RT kernel, it wouldn't have helped, since the interrupt hogging the CPU was non-preemptable. But it's good adv
by rcxdude 2y ago
I think in this case, unless they were running an RT kernel, it wouldn't have helped, since the interrupt hogging the CPU was non-preemptable. But it's good advice in general.
- PaulDavisThe1st 2y agoRT is in the mainline kernel now. Run with threaded_irqs, all interrupt handlers become preemptable (by default).
- rcxdude 2y agoTrue, but that's very recent, and still not a default configuration. (And the message reported in the article was removed from the mainline kernel in 2018)