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Date:      Mon, 22 May 2006 14:08:39 -0700 (PDT)
From:      Purushotham Nayak <nayak_purushotham@yahoo.com>
To:        freebsd-smp@freebsd.org
Subject:   FreeBSD 6.0 SMP 
Message-ID:  <20060522210839.21627.qmail@web33701.mail.mud.yahoo.com>

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Hi All,

I have an Intel D955XBK motherboard with an Pentium 4, 3.2 GHz with HTT. It's
running FreeBSD 6.0 with an SMP kernel. systat shows two cpu but there is never
any load on cpu 1. However when I run top I only see all processes being run by
cpu 0. Is there a sure way to check whether SMP is correctly set and running ?.
I have listed the mptable output, some sysctl variables and ym dmesg output
here.

mptable output (mptable -verbose) (adding -grope has no effect on output)
===============================================================================

MPTable

 looking for EBDA pointer @ 0x040e, found, searching EBDA @ 0x0009fc00
 searching CMOS 'top of mem' @ 0x0009f800 (638K)
 searching default 'top of mem' @ 0x0009fc00 (639K)
 searching BIOS @ 0x000f0000

 MP FPS found in BIOS @ physical addr: 0x000fe200

-------------------------------------------------------------------------------

MP Floating Pointer Structure:

  location:            BIOS
  physical address:        0x000fe200
  signature:            '_MP_'
  length:            16 bytes
  version:            1.4
  checksum:            0x9f
  mode:                Virtual Wire

-------------------------------------------------------------------------------

MP Config Table Header:

  physical address:        0x000fe210
  signature:            'PCMP'
  base table length:        64
  version:            1.4
  checksum:            0xa0
  OEM ID:            ''
  Product ID:            ''
  OEM table pointer:        0x00000000
  OEM table size:        0
  entry count:            1
  local APIC address:        0xfee00000
  extended table length:    0
  extended table checksum:    0

-------------------------------------------------------------------------------

MP Config Base Table Entries:

--
Processors:    APIC ID    Version    State        Family    Model    Step    Flags
         0     0x14     BSP, usable     15     4     3     0xbfebfbff

===============================================================================

Some sysctl variables
---------------------
kern.threads.virtual_cpu: 2
kern.ccpu: 1948
kern.smp.cpus: 2
kern.smp.maxcpus: 16
debug.cpufreq.verbose: 0
debug.cpufreq.lowest: 0
debug.kdb.stop_cpus: 1
debug.PMAP1changedcpu: 0
hw.ncpu: 2
hw.acpi.cpu.cx_supported: C1/0
hw.acpi.cpu.cx_lowest: C1
hw.acpi.cpu.cx_usage: 100.00%
machdep.cpu_idle_hlt: 1
machdep.hlt_cpus: 2
machdep.hlt_logical_cpus: 0
machdep.logical_cpus_mask: 2
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.CPU0
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.1.%desc: ACPI CPU
dev.cpu.1.%driver: cpu
dev.cpu.1.%location: handle=\_PR_.CPU1
dev.cpu.1.%pnpinfo: _HID=none _UID=0
dev.cpu.1.%parent: acpi0

My kernel configuration includes the following lines.
=====================================================

options SMP
device apic
device acpi

dmesg output
====================================================
Copyright (c) 1992-2005 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 6.0-RELEASE #3: Mon May 22 15:51:57 EDT 2006
    annu@hercules:/usr/obj/usr/src/sys/HERCULES
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (3206.54-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf43  Stepping = 3
  Features=0xbfebfbff<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,HTT,TM,PBE>
  Features2=0x649d<SSE3,RSVD2,MON,DS_CPL,EST,CNTX-ID,CX16,<b14>>
  AMD Features=0x20000000<LM>
  Hyperthreading: 2 logical CPUs
real memory  = 2134478848 (2035 MB)
avail memory = 2082951168 (1986 MB)
ACPI APIC Table: <INTEL  D955XBK >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ioapic0: Changing APIC ID to 2
ioapic0 <Version 2.0> irqs 0-23 on motherboard
netsmb_dev: loaded
acpi0: <INTEL D955XBK> on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link LNKA> irq 11 on acpi0
pci_link1: <ACPI PCI Link LNKB> irq 10 on acpi0
pci_link2: <ACPI PCI Link LNKC> irq 11 on acpi0
pci_link3: <ACPI PCI Link LNKD> irq 11 on acpi0
pci_link4: <ACPI PCI Link LNKE> on acpi0
pci_link5: <ACPI PCI Link LNKF> on acpi0
pci_link6: <ACPI PCI Link LNKG> irq 9 on acpi0
pci_link7: <ACPI PCI Link LNKH> irq 11 on acpi0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_perf0: <ACPI CPU Frequency Control> on cpu0
acpi_perf0: failed in PERF_STATUS attach
device_attach: acpi_perf0 attach returned 6
acpi_perf0: <ACPI CPU Frequency Control> on cpu0
acpi_perf0: failed in PERF_STATUS attach
device_attach: acpi_perf0 attach returned 6
cpu1: <ACPI CPU> on acpi0
acpi_perf1: <ACPI CPU Frequency Control> on cpu1
acpi_perf1: failed in PERF_STATUS attach
device_attach: acpi_perf1 attach returned 6
acpi_perf1: <ACPI CPU Frequency Control> on cpu1
acpi_perf1: failed in PERF_STATUS attach
device_attach: acpi_perf1 attach returned 6
acpi_button0: <Sleep Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
pci1: <display> at device 0.1 (no driver attached)
pci0: <multimedia> at device 27.0 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib2
pcib3: <ACPI PCI-PCI bridge> at device 28.4 on pci0
pci3: <ACPI PCI bus> on pcib3
pcib4: <ACPI PCI-PCI bridge> at device 28.5 on pci0
pci4: <ACPI PCI bus> on pcib4
em0: <Intel(R) PRO/1000 Network Connection, Version - 2.1.7> port 0x2000-0x201f mem 0x88100000-0x8811ffff irq 17 at device 0.0 on pci4
em0: Ethernet address: 00:13:20:b0:02:ec
em0:  Speed:N/A  Duplex:N/A
uhci0: <UHCI (generic) USB controller> port 0x4080-0x409f irq 23 at device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: <UHCI (generic) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: <UHCI (generic) USB controller> port 0x4060-0x407f irq 19 at device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: <UHCI (generic) USB controller> on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: <UHCI (generic) USB controller> port 0x4040-0x405f irq 18 at device 29.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: <UHCI (generic) USB controller> on uhci2
usb2: USB revision 1.0
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhci3: <UHCI (generic) USB controller> port 0x4020-0x403f irq 16 at device 29.3 on pci0
uhci3: [GIANT-LOCKED]
usb3: <UHCI (generic) USB controller> on uhci3
usb3: USB revision 1.0
uhub3: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
ehci0: <EHCI (generic) USB 2.0 controller> mem 0x88304400-0x883047ff irq 23 at device 29.7 on pci0
ehci0: [GIANT-LOCKED]
usb4: EHCI version 1.0
usb4: companion controllers, 2 ports each: usb0 usb1 usb2 usb3
usb4: <EHCI (generic) USB 2.0 controller> on ehci0
usb4: USB revision 2.0
uhub4: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub4: 8 ports with 8 removable, self powered
umass0: vendor 0x05e3 USB Storage, rev 2.00/93.17, addr 2
pcib5: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci5: <ACPI PCI bus> on pcib5
fwohci0: <Texas Instruments TSB82AA2> mem 0x88004000-0x880047ff,0x88000000-0x88003fff irq 18 at device 4.0 on pci5
fwohci0: OHCI version 1.10 (ROM=0)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:90:27:00:01:97:12:78
fwohci0: invalid speed 7 (fixed to 3).
fwohci0: Phy 1394a available S800, 3 ports.
fwohci0: Link S800, max_rec 4096 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:90:27:97:12:78
fwe0: Ethernet address: 02:90:27:97:12:78
fwe0: if_start running deferred for Giant
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwohci0: Initiate bus reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
fwohci0: phy int
atapci0: <SiI 3114 SATA150 controller> port 0x1018-0x101f,0x1024-0x1027,0x1010-0x1017,0x1020-0x1023,0x1000-0x100f mem 0x88004800-0x88004bff irq 17 at device 5.0 on pci5
ata2: <ATA channel 0> on atapci0
ata3: <ATA channel 1> on atapci0
ata4: <ATA channel 2> on atapci0
ata5: <ATA channel 3> on atapci0
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci1: <Intel ICH7 UDMA100 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x40b0-0x40bf irq 18 at device 31.1 on pci0
ata0: <ATA channel 0> on atapci1
ata1: <ATA channel 1> on atapci1
atapci2: <Intel ICH7 SATA150 controller> port 0x40c8-0x40cf,0x40e4-0x40e7,0x40c0-0x40c7,0x40e0-0x40e3,0x40a0-0x40af mem 0x88304000-0x883043ff irq 19 at device 31.2 on pci0
ata6: <ATA channel 0> on atapci2
ata7: <ATA channel 1> on atapci2
ata8: <ATA channel 2> on atapci2
ata9: <ATA channel 3> on atapci2
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
ppc0: <ECP parallel printer port> port 0x378-0x37f,0x778-0x77f irq 7 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse Explorer, device ID 4
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xccfff,0xcd000-0xcdfff,0xce000-0xcefff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
kue0: ATEN Inc. USB-Ethernet, rev 1.00/0.08, addr 2
kue0: Ethernet address: 00:10:74:00:2e:74
kue0: if_start running deferred for Giant
Timecounters tick every 1.000 msec
acd0: DVDR <NEC DVD RW ND-3550A/1.05> at ata0-master UDMA33
ad12: 157066MB <HDT722516DLA380 V43OA91A> at ata6-master SATA150
SMP: AP CPU #1 Launched!
....................
.............etc.



		
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