Messages in this thread | | | Date | Sat, 25 Mar 2000 23:24:59 -0700 | From | yodaiken@fsmlabs ... | Subject | Re: [patch] preemptive kernel, preemptive-2.3.52-A7 |
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The hidden assumption of the pre-emption patch is that there are kernel paths that take more than 500us to reach a schedule or return to user mode. Obviously there are such paths, but what are they and why can't they be fixed? If they were fixed, this whole discussion would stop and we would have a very responsive kernel that did not sacrifice throughput for latency.
There should be a kernel debug test that crashes the kernel when more than 500us have passed between entering kernel mode and leaving either the process or kernel mode.
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