Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 | From | Kevin Hilman <> | Date | 07 Sep 2004 21:22:11 -0700 |
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I'm running the VP patch on a PII 400MHz to closer approximate an embedded target. I get a 21ms latency trace during boot which dwarfs other latencies and prevents me from seeing any of the later latencies when I'm running my test. The trace (from -R5) is available here:
http://hilman.org/kevin/VP/trace-cond_resched.txt
At first glance, it appears to be the result of an accumulation of calls to __delay() from the 3c59x vortex driver. Any ideas what's going on here?
Is there a way to disable the trace by default and enable it later via /proc? I see that the preemption itself can be disabled via command-line and then enable later via /proc but I don't see the same for the latency trace.
Kevin http://hilman.org/
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