Detection of HTT

From: Frode Nordahl (
Date: 11/14/04

  • Next message: Scott Long: "Re: Detection of HTT"
    Date: Sun, 14 Nov 2004 10:47:54 +0100


    I have a Intel SE7505VB2 board with two 3.06GHz Xeons

    I have disabled HTT in BIOS, but FreeBSD says this during boot anyway:

       Hyperthreading: 2 logical CPUs

    Is this harmless, or does this mean the scheduler is running with HTT

    Frode Nordahl

    Copyright (c) 1992-2004 The FreeBSD Project.
    Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
             The Regents of the University of California. All rights
    FreeBSD 6.0-CURRENT #1: Sun Nov 14 08:37:55 CET 2004
    WARNING: WITNESS option enabled, expect reduced performance.
    Timecounter "i8254" frequency 1193182 Hz quality 0
    CPU: Intel(R) Xeon(TM) CPU 3.06GHz (3056.50-MHz 686-class CPU)
       Origin = "GenuineIntel" Id = 0xf29 Stepping = 9
       Hyperthreading: 2 logical CPUs
    real memory = 4025942016 (3839 MB)
    avail memory = 3942326272 (3759 MB)
    FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
      cpu0 (BSP): APIC ID: 0
      cpu1 (AP): APIC ID: 6
    ioapic0 <Version 2.0> irqs 0-23 on motherboard
    ioapic1 <Version 2.0> irqs 24-47 on motherboard
    ioapic2 <Version 2.0> irqs 48-71 on motherboard
    npx0: [FAST]
    npx0: <math processor> on motherboard
    npx0: INT 16 interface
    acpi0: <PTLTD RSDT> on motherboard
    acpi0: Power Button (fixed)
    Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
    acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
    cpu0: <ACPI CPU> on acpi0
    cpu1: <ACPI CPU> on acpi0
    pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
    pci0: <ACPI PCI bus> on pcib0
    agp0: <Intel Generic host to PCI bridge> mem 0xf4000000-0xf7ffffff at
    device 0.0 on pci0
    pci0: <unknown> at device 0.1 (no driver attached)
    pcib1: <ACPI PCI-PCI bridge> mem 0xf8000000-0xfbffffff at device 1.0 on
    pci1: <ACPI PCI bus> on pcib1
    pcib2: <ACPI PCI-PCI bridge> at device 2.0 on pci0
    pci2: <ACPI PCI bus> on pcib2
    pci2: <base peripheral, interrupt controller> at device 28.0 (no driver
    pcib3: <ACPI PCI-PCI bridge> at device 29.0 on pci2
    pci3: <ACPI PCI bus> on pcib3
    pci2: <base peripheral, interrupt controller> at device 30.0 (no driver
    pcib4: <ACPI PCI-PCI bridge> at device 31.0 on pci2
    pci4: <ACPI PCI bus> on pcib4
    em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port
    0x7000-0x703f mem 0xf0200000-0xf021ffff irq 52 at device 2.0 on pci4
    em0: Ethernet address: 00:04:23:ab:d9:bf
    em0: Speed:N/A Duplex:N/A
    pci0: <unknown> at device 2.1 (no driver attached)
    uhci0: <Intel 82801DB (ICH4) USB controller USB-A> port 0x6800-0x681f
    irq 16 at device 29.0 on pci0
    uhci0: [GIANT-LOCKED]
    usb0: <Intel 82801DB (ICH4) USB controller USB-A> 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: <Intel 82801DB (ICH4) USB controller USB-B> port 0x6820-0x683f
    irq 19 at device 29.1 on pci0
    uhci1: [GIANT-LOCKED]
    usb1: <Intel 82801DB (ICH4) USB controller USB-B> 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: <Intel 82801DB (ICH4) USB controller USB-C> port 0x6840-0x685f
    irq 18 at device 29.2 on pci0
    uhci2: [GIANT-LOCKED]
    usb2: <Intel 82801DB (ICH4) USB controller USB-C> 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
    pcib5: <ACPI PCI-PCI bridge> at device 30.0 on pci0
    pci5: <ACPI PCI bus> on pcib5
    pci5: <display, VGA> at device 2.0 (no driver attached)
    fxp0: <Intel 82550 Pro/100 Ethernet> port 0x8400-0x843f mem
    0xf0300000-0xf031ffff,0xf0321000-0xf0321fff irq 18 at device 3.0 on
    miibus0: <MII bus> on fxp0
    inphy0: <i82555 10/100 media interface> on miibus0
    inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
    fxp0: Ethernet address: 00:04:23:ab:d5:90
    atapci0: <SiI 3112 SATA150 controller> port
    mem 0xf0322000-0xf03221ff irq 19 at device 4.0 on pci5
    ata2: channel #0 on atapci0
    ata3: channel #1 on atapci0
    isab0: <PCI-ISA bridge> at device 31.0 on pci0
    isa0: <ISA bus> on isab0
    atapci1: <Intel ICH4 UDMA100 controller> port
    0x6860-0x686f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on
    ata0: channel #0 on atapci1
    ata1: channel #1 on atapci1
    pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
    acpi_button0: <Power Button> on acpi0
    atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
    atkbd0: <AT Keyboard> irq 1 on atkbdc0
    kbd0 at atkbd0
    atkbd0: [GIANT-LOCKED]
    fdc0: <floppy drive controller> port 0x3f7,0x3f4-0x3f5,0x3f0-0x3f3 irq
    6 drq 2 on acpi0
    fdc0: [FAST]
    sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on
    sio0: type 16550A, console
    sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
    sio1: type 16550A
    ppc0: <ECP parallel printer port> port 0x778-0x77b,0x378-0x37f irq 7
    drq 3 on acpi0
    ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
    ppc0: FIFO with 16/16/9 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
    orm0: <ISA Option ROMs> at iomem
    0xe2000-0xe27ff,0xc8000-0xcc7ff,0xc0000-0xc7fff on isa0
    pmtimer0 on isa0
    sc0: <System console> at flags 0x100 on isa0
    sc0: VGA <16 virtual consoles, flags=0x100>
    vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
    Timecounters tick every 1.000 msec
    witness_get: witness exhausted
    ad0: 29325MB <Maxtor 6E030L0/NAR61EA0> [59582/16/63] at ata0-master
    ad4: 78167MB <Maxtor 6Y080M0/YAR51HW0> [158816/16/63] at ata2-master
    ad6: 78167MB <Maxtor 6Y080M0/YAR51HW0> [158816/16/63] at ata3-master
    SMP: AP CPU #1 Launched!
    Mounting root from ufs:/dev/ad4s1a

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  • Next message: Scott Long: "Re: Detection of HTT"