Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.8.1-P4 | From | Lee Revell <> | Date | Thu, 19 Aug 2004 06:43:36 -0400 |
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On Thu, 2004-08-19 at 06:38, Lee Revell wrote: > On Thu, 2004-08-19 at 06:29, Lee Revell wrote: > > > Yes, this takes care of it. Now the dominant latency is the 142us > > latency from the via-rhine driver, which is fixed by using the driver > > from -mm (specifically it's fixed in bk-netdev.patch). > > > > OK, this is a new one: >
This is the other common one:
preemption latency trace v1.0.1 ------------------------------- latency: 74 us, entries: 9 (9) ----------------- | task: XFree86/493, uid:0 nice:-10 policy:0 rt_prio:0 ----------------- => started at: schedule+0x5b/0x590 => ended at: schedule+0x2f0/0x590 =======> 0.000ms (+0.000ms): schedule (work_resched) 0.000ms (+0.000ms): sched_clock (schedule) 0.001ms (+0.001ms): dequeue_task (schedule) 0.001ms (+0.000ms): recalc_task_prio (schedule) 0.002ms (+0.000ms): effective_prio (recalc_task_prio) 0.002ms (+0.000ms): enqueue_task (schedule) 0.004ms (+0.002ms): __switch_to (schedule) 0.072ms (+0.067ms): finish_task_switch (schedule) 0.073ms (+0.000ms): sub_preempt_count (schedule)
Not sure what to make of this one.
Lee
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