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SubjectRe: 2.6.19-rc6-mm1 -- sched-improve-migration-accuracy.patch slows boot
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On Mon, 2006-11-27 at 11:16 +0100, Ingo Molnar wrote:
> could you run this utility:
>
> http://people.redhat.com/mingo/time-warp-test/time-warp-test.c
>
> on your box for a while (10 minutes or so) - what does it print?
>
> Ingo

1 CPUs, running 1 parallel test-tasks.
checking for time-warps via:
- read time stamp counter (RDTSC) instruction (cycle resolution)
- gettimeofday (TOD) syscall (usec resolution)
- clock_gettime(CLOCK_MONOTONIC) syscall (nsec resolution)

new TOD-warp maximum: -442709 usecs, 00042352e214e2f8 ->
00042352e20e21a3
| 0.69 us, TSC-warps:0 | 6.89 us, TOD-warps:1 | 6.89 us, CLOCK-warps:0
|


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