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Date:      Wed, 14 Jan 2009 12:09:11 -0200 (BRST)
From:      scuba@centroin.com.br
To:        freebsd-questions@freebsd.org
Subject:   Time skew 
Message-ID:  <alpine.BSF.2.00.0901141112490.41980@trex.centroin.com.br>

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Hi All,

 	I'm facing some strange behavior with an skew in the system clock.
 	The hardware is a Dell PowerEdge 2950III, running two instances of 
FreeBSD 7.0-RELEASE-p5 - amd64 over an ESXi hipervisor.
 	To both were allocated 4 processors and 4 GB of RAM, and dmesg for 
both are identical.
 	I'm using clockspeed to synchronize the clock, but just one of 
them is delaying the clock a lot.
 	The hardware clock is ok as far as the other virtual machine.
 	Where should I start to investigate?

- Marcelo

 	Dmesg is following:

Copyright (c) 1992-2008 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
         The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 7.0-RELEASE-p5 #0: Mon Nov  3 13:19:30 BRST 2008
     root@tst.ciplan:/usr/obj/usr/src/sys/TREX-64
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(R) CPU           E5410  @ 2.33GHz (2357.36-MHz K8-class 
CPU)
   Origin = "GenuineIntel"  Id = 0x10678  Stepping = 8

Features=0xfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CM
OV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS>
   Features2=0x82201<SSE3,SSSE3,CX16,<b19>>
   AMD Features=0x20100800<SYSCALL,NX,LM>
   AMD Features2=0x1<LAHF>
usable memory = 4013707264 (3827 MB)
avail memory  = 3883839488 (3703 MB)
ACPI APIC Table: <PTLTD          APIC  >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
  cpu0 (BSP): APIC ID:  0
  cpu1 (AP): APIC ID:  1
  cpu2 (AP): APIC ID:  2
  cpu3 (AP): APIC ID:  3
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-23 on motherboard
kbd1 at kbdmux0
ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
hptrr: HPT RocketRAID controller driver v1.1 (Nov  3 2008 13:19:19)
acpi0: <PTLTD   RSDT> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
cpu1: <ACPI CPU> on acpi0
acpi_throttle1: <ACPI CPU Throttling> on cpu1
acpi_throttle1: failed to attach P_CNT
device_attach: acpi_throttle1 attach returned 6
cpu2: <ACPI CPU> on acpi0
acpi_throttle2: <ACPI CPU Throttling> on cpu2
acpi_throttle2: failed to attach P_CNT
device_attach: acpi_throttle2 attach returned 6
cpu3: <ACPI CPU> on acpi0
acpi_throttle3: <ACPI CPU Throttling> on cpu3
acpi_throttle3: failed to attach P_CNT
device_attach: acpi_throttle3 attach returned 6




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