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Message-Id: <1164739622.2894.116.camel@localhost.localdomain> Date: Tue, 28 Nov 2006 10:47:02 -0800 From: Don Mullis <dwm@...r.net> To: Ingo Molnar <mingo@...e.hu> Cc: Mike Galbraith <efault@....de>, Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org Subject: Re: 2.6.19-rc6-mm1 -- sched-improve-migration-accuracy.patch slows boot 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 | - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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