Messages in this thread |  | | | Date | Sat, 30 Oct 2004 13:16:40 +0200 | | From | Ingo Molnar <> | | Subject | Re: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4] |
* Lee Revell <rlrevell@joe-job.com> wrote:
> 835 80000000 0.473ms (+0.000ms): finish_task_switch (__schedule) > 835 80000000 0.474ms (+0.000ms): trace_stop_sched_switched (finish_task_switch) > 835 80000000 0.474ms (+0.849ms): (835) ((49)) > 835 80000000 1.324ms (+0.000ms): do_IRQ (finish_task_switch) > 835 80000000 1.324ms (+0.001ms): do_IRQ ((0)) > 835 80000000 1.325ms (+0.002ms): mask_and_ack_8259A (__do_IRQ)
this seems to be very similar to the DMA problems Mark H Johnson had. It is almost certainly not caused by the kernel. It could in theory be some SMM overhead, but the bigger likelyhood is disk DMA.
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