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Message-Id: <20080110123612.M81049@visp.net.lb> Date: Thu, 10 Jan 2008 14:36:12 +0200 From: "Denys Fedoryshchenko" <denys@...p.net.lb> To: linux-kernel@...r.kernel.org Subject: TSC && HPET calibration 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. Sep 19 18:58:48 visp-1 Measured 1068 cycles TSC warp between CPUs, turning off TSC clock. Sep 19 19:16:23 visp-1 Measured 1068 cycles TSC warp between CPUs, turning off TSC clock. Sep 22 03:03:21 visp-1 Measured 912 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 12:06:21 visp-1 Measured 1176 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 12:35:16 visp-1 Measured 984 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 12:53:37 visp-1 Measured 1212 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:12:09 visp-1 Measured 1248 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:13:45 visp-1 Measured 1116 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:15:21 visp-1 Measured 1092 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:16:56 visp-1 Measured 1092 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:18:32 visp-1 Measured 984 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:20:07 visp-1 Measured 1020 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:21:43 visp-1 Measured 1116 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:23:18 visp-1 Measured 1008 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:24:54 visp-1 Measured 1032 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:26:29 visp-1 Measured 996 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:28:05 visp-1 Measured 1236 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:29:40 visp-1 Measured 1332 cycles TSC warp between CPUs, turning off TSC clock. Oct 1 13:34:24 visp-1 Measured 1152 cycles TSC warp between CPUs, turning off TSC clock. Oct 10 02:02:25 visp-1 Measured 1056 cycles TSC warp between CPUs, turning off TSC clock. Oct 10 16:07:34 visp-1 Measured 972 cycles TSC warp between CPUs, turning off TSC clock. Oct 10 16:22:40 visp-1 Measured 1140 cycles TSC warp between CPUs, turning off TSC clock. Oct 10 16:40:09 visp-1 Measured 996 cycles TSC warp between CPUs, turning off TSC clock. Oct 26 16:28:40 visp-1 Measured 1152 cycles TSC warp between CPUs, turning off TSC clock. Oct 26 17:14:13 visp-1 Measured 972 cycles TSC warp between CPUs, turning off TSC clock. Oct 26 17:24:57 visp-1 Measured 900 cycles TSC warp between CPUs, turning off TSC clock. Oct 26 19:00:51 visp-1 Measured 1020 cycles TSC warp between CPUs, turning off TSC clock. Oct 26 22:15:21 visp-1 Measured 1032 cycles TSC warp between CPUs, turning off TSC clock. Oct 26 22:29:35 visp-1 Measured 768 cycles TSC warp between CPUs, turning off TSC clock. Oct 27 10:41:49 visp-1 Measured 1032 cycles TSC warp between CPUs, turning off TSC clock. Oct 27 11:37:30 visp-1 Measured 852 cycles TSC warp between CPUs, turning off TSC clock. Oct 27 11:58:26 visp-1 Measured 1092 cycles TSC warp between CPUs, turning off TSC clock. Oct 27 13:36:39 visp-1 Measured 1044 cycles TSC warp between CPUs, turning off TSC clock. Oct 28 00:34:37 visp-1 Measured 792 cycles TSC warp between CPUs, turning off TSC clock. Nov 18 22:31:00 visp-1 Measured 936 cycles TSC warp between CPUs, turning off TSC clock. Jan 10 13:41:51 visp-1 Measured 1020 cycles TSC warp between CPUs, turning off TSC clock. cpuinfo (it is Dual Xeon with HT PowerEdge) visp-1 log # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Intel(R) Xeon(TM) CPU 3.20GHz stepping : 4 cpu MHz : 3192.070 cache size : 2048 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 6 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts sync_rdtsc pni monitor ds_cpl vmx cid cx16 xtpr lahf_lm bogomips : 6388.02 clflush size : 64 processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Intel(R) Xeon(TM) CPU 3.20GHz stepping : 4 cpu MHz : 3192.070 cache size : 2048 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 6 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts sync_rdtsc pni monitor ds_cpl vmx cid cx16 xtpr lahf_lm bogomips : 6383.74 clflush size : 64 processor : 2 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Intel(R) Xeon(TM) CPU 3.20GHz stepping : 4 cpu MHz : 3192.070 cache size : 2048 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 6 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts sync_rdtsc pni monitor ds_cpl vmx cid cx16 xtpr lahf_lm bogomips : 6383.75 clflush size : 64 processor : 3 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Intel(R) Xeon(TM) CPU 3.20GHz stepping : 4 cpu MHz : 3192.070 cache size : 2048 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 6 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts sync_rdtsc pni monitor ds_cpl vmx cid cx16 xtpr lahf_lm bogomips : 6383.74 clflush size : 64 -- Denys Fedoryshchenko Technical Manager Virtual ISP S.A.L. -- 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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