Messages in this thread |  | | | Subject | Re: [2.4.17/18pre] VM and swap - it's really unusable | | Date | Tue, 8 Jan 2002 20:13:49 +0000 (GMT) | | From | Alan Cox <> |
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> low-latency kernel". Now, IF we can come to this decision, then > internal preemption is the way to do it. But it affects ALL kernel
The pre-empt patches just make things much much harder to debug. They remove some of the predictability and the normal call chain following goes out of the window because you end up seeing crashes in a thread with no idea what ran the microsecond before
Some of that happens now but this makes it vastly worse.
The low latency patches don't change the basic predictability and debuggability but allow you to hit a 1mS pre-empt target for the general case.
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