Messages in this thread | | | Date | Tue, 15 Jan 2008 02:17:20 -0800 | From | Andrew Morton <> | Subject | Re: TSC && HPET calibration |
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On Thu, 10 Jan 2008 14:36:12 +0200 "Denys Fedoryshchenko" <denys@visp.net.lb> wrote:
> Hi > > I have same issue, but it's never passed synchronization. > > Jan 10 12:59:44 visp-1 Time: tsc clocksource has been installed. > Jan 10 13:41:51 visp-1 ACPI: HPET 000F29CD, 0038 (r1 DELL PE_SC3 1 > DELL 1) > Jan 10 13:41:51 visp-1 ACPI: HPET id: 0x8086a201 base: 0xfed00000 > Jan 10 13:41:51 visp-1 hpet clockevent registered > Jan 10 13:41:51 visp-1 checking TSC synchronization [CPU#0 -> CPU#1]: passed. > Jan 10 13:41:51 visp-1 checking TSC synchronization [CPU#0 -> CPU#2]: > Jan 10 13:41:51 visp-1 Measured 1020 cycles TSC warp between CPUs, turning > off TSC clock. > Jan 10 13:41:51 visp-1 Marking TSC unstable due to: check_tsc_sync_source > failed. > Jan 10 13:41:51 visp-1 hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 > Jan 10 13:41:51 visp-1 hpet0: 3 64-bit timers, 14318180 Hz > Jan 10 13:41:51 visp-1 Time: hpet clocksource has been installed. > > grep Measures > Sep 19 14:31:28 visp-1 Measured 1044 cycles TSC warp between CPUs, turning > off TSC clock. > Sep 19 18:22:46 visp-1 Measured 996 cycles TSC warp between CPUs, turning off > TSC clock. > Sep 19 18:35:44 visp-1 Measured 1080 cycles TSC warp between CPUs, turning > off TSC clock.
Which kernel version?
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