CentOS - Oct 2006 - Uneven CPU speed with CentOS 4.4 on a Mac Pro

Hi list,

I've recently managed to install CentOS 4.4 on an Apple Mac Pro.
Functionality-wise everything works great, but when trying to benchmark
the system, I don't get stable runtimes, they differ by more than 30%.
For example a benchmark run with our PDE solving code takes between 500
and 800 s on the completely unloaded machine.

Suspicious kernel output (complete output attached):

PCI: Probing PCI hardware (bus 00)
PCI: 0000:00:03.0: class 600 doesn't match header type 01. Ignoring class.
PCI: 0000:00:05.0: class 600 doesn't match header type 01. Ignoring class.
PCI: 0000:00:06.0: class 600 doesn't match header type 01. Ignoring class.
PCI: 0000:00:07.0: class 600 doesn't match header type 01. Ignoring class.

and quite a bunch of

APIC error on CPUx: 60(60).

This is probably due to Apple's not quite perfect BIOS emulation code.

According to /proc/cpuinfo the CPUs don't support any power managment,
cpuspeed isn't running or even configured, and they are always shown as
2.66 GHz, which is correct.

Anyone any idea?

-Michael






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Michael Lampe wrote:
> Hi list,
> 
> I've recently managed to install CentOS 4.4 on an Apple Mac Pro.
> Functionality-wise everything works great, but when trying to benchmark
> the system, I don't get stable runtimes, they differ by more than 30%.
> For example a benchmark run with our PDE solving code takes between 500
> and 800 s on the completely unloaded machine.
> 
> Suspicious kernel output (complete output attached):
> 
> PCI: Probing PCI hardware (bus 00)
> PCI: 0000:00:03.0: class 600 doesn't match header type 01. Ignoring
class.
> PCI: 0000:00:05.0: class 600 doesn't match header type 01. Ignoring
class.
> PCI: 0000:00:06.0: class 600 doesn't match header type 01. Ignoring
class.
> PCI: 0000:00:07.0: class 600 doesn't match header type 01. Ignoring
class.
> 
> and quite a bunch of
> 
> APIC error on CPUx: 60(60).
> 
> This is probably due to Apple's not quite perfect BIOS emulation code.
> 
> According to /proc/cpuinfo the CPUs don't support any power managment,
> cpuspeed isn't running or even configured, and they are always shown as
> 2.66 GHz, which is correct.
> 
> Anyone any idea?
> 
> -Michael
> 
> 
> 
> 
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
> Bootdata ok (command line is ro root=/dev/VolGroup00/LogVol00 rhgb quiet
memmap=14G at 4G)
> Linux version 2.6.9-42.0.2.ELsmp (root at boskoop2.iwr.uni-heidelberg.de)
(gcc version 3.4.6 20060404 (Red Hat 3.4.6-3)) #1 SMP Sat Oct 7 19:54:12 CEST
2006
> BIOS-provided physical RAM map:
>  BIOS-e801: 0000000000000000 - 000000000009f000 (usable)
>  BIOS-e801: 0000000000100000 - 000000007eae0000 (usable)
> ACPI: RSDP (v002 APPLE                                 ) @
0x00000000000fe020
> ACPI: XSDT (v001 APPLE   Apple00 0x0000005c      0x01000013) @
0x000000007f1281c0
> ACPI: ECDT (v001 APPLE   Apple00 0x00000001 Loki 0x0000005f) @
0x000000007ec7e000
> ACPI: FADT (v004 APPLE   Apple00 0x0000005c Loki 0x0000005f) @
0x000000007ebbf000
> ACPI: HPET (v001 APPLE   Apple00 0x00000001 Loki 0x0000005f) @
0x000000007ebbe000
> ACPI: MADT (v002 APPLE   Apple00 0x00000000 Loki 0x0000005f) @
0x000000007ebbc000
> ACPI: MCFG (v001 APPLE   Apple00 0x00000001 Loki 0x0000005f) @
0x000000007ebbb000
> ACPI: WDRT (v003 APPLE   Apple00 0x00000001 Loki 0x0000005f) @
0x000000007ebb8000
> ACPI: SSDT (v001  PmRef  Cpu0Cst 0x00003001 INTL 0x20050309) @
0x000000007ebb7000
> ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20050309) @
0x000000007ebb6000
> ACPI: SSDT (v001  PmRef  Cpu1Cst 0x00003000 INTL 0x20050309) @
0x000000007ebaa000
> ACPI: SSDT (v001  PmRef  Cpu1Ist 0x00003000 INTL 0x20050309) @
0x000000007eba9000
> ACPI: SSDT (v001  PmRef  Cpu2Cst 0x00003000 INTL 0x20050309) @
0x000000007eba8000
> ACPI: SSDT (v001  PmRef  Cpu2Ist 0x00003000 INTL 0x20050309) @
0x000000007eba7000
> ACPI: SSDT (v001  PmRef  Cpu3Cst 0x00003000 INTL 0x20050309) @
0x000000007eba6000
> ACPI: SSDT (v001  PmRef  Cpu3Ist 0x00003000 INTL 0x20050309) @
0x000000007eba5000
> ACPI: SSDT (v001  PmRef  Cpu4Cst 0x00003000 INTL 0x20050309) @
0x000000007eba4000
> ACPI: SSDT (v001  PmRef  Cpu4Ist 0x00003000 INTL 0x20050309) @
0x000000007eba3000
> ACPI: SSDT (v001  PmRef  Cpu5Cst 0x00003000 INTL 0x20050309) @
0x000000007eba2000
> ACPI: SSDT (v001  PmRef  Cpu5Ist 0x00003000 INTL 0x20050309) @
0x000000007eba1000
> ACPI: SSDT (v001  PmRef  Cpu6Cst 0x00003000 INTL 0x20050309) @
0x000000007eba0000
> ACPI: SSDT (v001  PmRef  Cpu6Ist 0x00003000 INTL 0x20050309) @
0x000000007eb9f000
> ACPI: SSDT (v001  PmRef  Cpu7Cst 0x00003000 INTL 0x20050309) @
0x000000007eb9e000
> ACPI: SSDT (v001  PmRef  Cpu7Ist 0x00003000 INTL 0x20050309) @
0x000000007eb9d000
> ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20050309) @
0x000000007eb98000
> ACPI: SSDT (v001 PCIRef Pci16118 0x00001000 INTL 0x20050309) @
0x000000007eb91000
> ACPI: SSDT (v001 SataRe  SataPri 0x00001000 INTL 0x20050309) @
0x000000007ede1000
> ACPI: SSDT (v001 SataRe  SataSec 0x00001000 INTL 0x20050309) @
0x000000007ede0000
> ACPI: DSDT (v001 APPLE   Apple00 0x00010001 Loki 0x0000005f) @
0x0000000000000000
> No NUMA configuration found
> Faking a node at 0000000000000000-0000000480000000
> Bootmem setup node 0 0000000000000000-0000000480000000
> No mptable found.
> On node 0 totalpages: 4718592
>   DMA zone: 4096 pages, LIFO batch:1
>   Normal zone: 4714496 pages, LIFO batch:16
>   HighMem zone: 0 pages, LIFO batch:1
> DMI 2.4 present.
> ACPI: PM-Timer IO Port: 0x408
> ACPI: Local APIC address 0xfee00000
> ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> Processor #0 6:15 APIC version 16
> ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
> Processor #1 6:15 APIC version 16
> ACPI: LAPIC (acpi_id[0x02] lapic_id[0x07] enabled)
> Processor #7 6:15 APIC version 16
> ACPI: LAPIC (acpi_id[0x03] lapic_id[0x06] enabled)
> Processor #6 6:15 APIC version 16
> ACPI: LAPIC (acpi_id[0x04] lapic_id[0x00] disabled)
> ACPI: LAPIC (acpi_id[0x05] lapic_id[0x00] disabled)
> ACPI: LAPIC (acpi_id[0x06] lapic_id[0x00] disabled)
> ACPI: LAPIC (acpi_id[0x07] lapic_id[0x00] disabled)
> ACPI: LAPIC_NMI (acpi_id[0x00] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x01] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x02] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x03] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x04] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x05] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x06] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x07] high level lint[0x1])
> Setting APIC routing to flat
> ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
> IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
> ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
> ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
> ACPI: IRQ0 used by override.
> ACPI: IRQ2 used by override.
> ACPI: IRQ9 used by override.
> ACPI: HPET id: 0x8086a201 base: 0xfed00000
> Using ACPI (MADT) for SMP configuration information
> Allocating PCI resources starting at 80000000 (gap: 7eae0000:81520000)
> Checking aperture...
> Built 1 zonelists
> Kernel command line: ro root=/dev/VolGroup00/LogVol00 rhgb quiet memmap=14G
at 4G console=tty0
> Initializing CPU#0
> PID hash table entries: 4096 (order: 12, 131072 bytes)
> time.c: Using 14.318180 MHz HPET timer.
> time.c: Detected 2660.006 MHz processor.
> Console: colour VGA+ 80x25
> Dentry cache hash table entries: 4194304 (order: 13, 33554432 bytes)
> Inode-cache hash table entries: 2097152 (order: 12, 16777216 bytes)
> Placing software IO TLB between 0x410d000 - 0x810d000
> Memory: 16374632k/18874368k available (2106k kernel code, 0k reserved,
1298k data, 204k init)
> Calibrating delay using timer specific routine.. 5323.65 BogoMIPS
(lpj=2661825)
> Security Scaffold v1.0.0 initialized
> SELinux:  Initializing.
> SELinux:  Starting in permissive mode
> There is already a security framework initialized, register_security
failed.
> selinux_register_security:  Registering secondary module capability
> Capability LSM initialized as secondary
> Mount-cache hash table entries: 256 (order: 0, 4096 bytes)
> CPU: L1 I cache: 32K, L1 D cache: 32K
> CPU: L2 cache: 4096K
> using mwait in idle threads.
> CPU0: Physical Processor ID: 0
> CPU0: Processor Core ID: 0
> CPU0: Initial APIC ID: 0
> ACPI: System reset via FADT Reset Register is supported
> Using IO APIC NMI watchdog
> CPU: L1 I cache: 32K, L1 D cache: 32K
> CPU: L2 cache: 4096K
> CPU0: Physical Processor ID: 0
> CPU0: Processor Core ID: 0
> CPU0: Initial APIC ID: 0
> CPU0: Intel(R) Xeon(R) CPU            5150  @ 2.66GHz stepping 06
> per-CPU timeslice cutoff: 865.66 usecs.
> task migration cache decay timeout: 1 msecs.
> Booting processor 1/1 rip 6000 rsp 1007ea05f58
> Initializing CPU#1
> Calibrating delay using timer specific routine.. 5320.00 BogoMIPS
(lpj=2660001)
> CPU: L1 I cache: 32K, L1 D cache: 32K
> CPU: L2 cache: 4096K
> CPU1: Physical Processor ID: 0
> CPU1: Processor Core ID: 1
> CPU1: Initial APIC ID: 1
> Intel(R) Xeon(R) CPU            5150  @ 2.66GHz stepping 06
> Booting processor 2/7 rip 6000 rsp 1007ea3df58
> Initializing CPU#2
> Calibrating delay using timer specific routine.. 5320.05 BogoMIPS
(lpj=2660028)
> CPU: L1 I cache: 32K, L1 D cache: 32K
> CPU: L2 cache: 4096K
> CPU2: Physical Processor ID: 3
> CPU2: Processor Core ID: 7
> CPU2: Initial APIC ID: 7
> Intel(R) Xeon(R) CPU            5150  @ 2.66GHz stepping 06
> Booting processor 3/6 rip 6000 rsp 1007ea73f58
> Initializing CPU#3
> Calibrating delay using timer specific routine.. 5320.05 BogoMIPS
(lpj=2660026)
> CPU: L1 I cache: 32K, L1 D cache: 32K
> CPU: L2 cache: 4096K
> CPU3: Physical Processor ID: 3
> CPU3: Processor Core ID: 6
> CPU3: Initial APIC ID: 6
> Intel(R) Xeon(R) CPU            5150  @ 2.66GHz stepping 06
> Total of 4 processors activated (21283.76 BogoMIPS).
> activating NMI Watchdog ... done.
> testing NMI watchdog ... OK.
> Using local APIC timer interrupts.
> Detected 20.781 MHz APIC timer.
> checking TSC synchronization across 4 CPUs: passed.
> Brought up 4 CPUs
> time.c: Using HPET/TSC based timekeeping.
> checking if image is initramfs... it is
> NET: Registered protocol family 16
> PCI: Using configuration type 1
> PCI: Using MMCONFIG at d0000000
> mtrr: v2.0 (20020519)
> ACPI: Subsystem revision 20040816
> ACPI: Found ECDT
> ACPI: Interpreter enabled
> ACPI: Using IOAPIC for interrupt routing
> ACPI: PCI Root Bridge [PCI0] (00:00)
> PCI: Probing PCI hardware (bus 00)
> PCI: 0000:00:03.0: class 600 doesn't match header type 01. Ignoring
class.
> PCI: 0000:00:05.0: class 600 doesn't match header type 01. Ignoring
class.
> PCI: 0000:00:06.0: class 600 doesn't match header type 01. Ignoring
class.
> PCI: 0000:00:07.0: class 600 doesn't match header type 01. Ignoring
class.
> PCI: Transparent bridge - 0000:00:1e.0
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1.P1P2._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1.P1P2.P2P5._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1.P1P2.P2P3._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP04._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIB._PRT]
> ACPI: PCI Interrupt Link [LNKA] (IRQs 5 7 9 10 *11)
> ACPI: PCI Interrupt Link [LNKB] (IRQs 5 7 9 10 11) *3
> ACPI: PCI Interrupt Link [LNKC] (IRQs 5 7 9 *10 11)
> ACPI: PCI Interrupt Link [LNKD] (IRQs 5 7 *9 10 11)
> ACPI: PCI Interrupt Link [LNKE] (IRQs *5 7 9 10 11)
> ACPI: PCI Interrupt Link [LNKF] (IRQs 5 7 9 10 *11)
> ACPI: PCI Interrupt Link [LNKG] (IRQs 5 7 9 10 11) *0, disabled.
> ACPI: PCI Interrupt Link [LNKH] (IRQs 5 7 9 *10 11)
> ACPI: Embedded Controller [EC] (gpe 17)
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.NRP4._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.SRP1._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.SRP3._PRT]
> usbcore: registered new driver usbfs
> usbcore: registered new driver hub
> PCI: Using ACPI for IRQ routing
> GSI 16 sharing vector 0xA9 and IRQ 16
> ACPI: PCI interrupt 0000:00:00.0[A] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt 0000:00:03.0[A]: no GSI - using IRQ 0
> ACPI: PCI interrupt 0000:00:04.0[A] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt 0000:00:05.0[A]: no GSI - using IRQ 0
> GSI 17 sharing vector 0xB1 and IRQ 17
> ACPI: PCI interrupt 0000:00:06.0[C] -> GSI 18 (level, low) -> IRQ 177
> ACPI: PCI interrupt 0000:00:07.0[A]: no GSI - using IRQ 0
> ACPI: PCI interrupt 0000:00:08.0[A]: no GSI - using IRQ 0
> GSI 18 sharing vector 0xB9 and IRQ 18
> ACPI: PCI interrupt 0000:00:1b.0[A] -> GSI 23 (level, low) -> IRQ 185
> GSI 19 sharing vector 0xC1 and IRQ 19
> ACPI: PCI interrupt 0000:00:1c.0[A] -> GSI 17 (level, low) -> IRQ 193
> ACPI: PCI interrupt 0000:00:1c.1[B] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt 0000:00:1c.2[C] -> GSI 18 (level, low) -> IRQ 177
> GSI 20 sharing vector 0xC9 and IRQ 20
> ACPI: PCI interrupt 0000:00:1c.3[D] -> GSI 19 (level, low) -> IRQ 201
> ACPI: PCI interrupt 0000:00:1d.0[A] -> GSI 19 (level, low) -> IRQ 201
> GSI 21 sharing vector 0xD1 and IRQ 21
> ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 20 (level, low) -> IRQ 209
> GSI 22 sharing vector 0xD9 and IRQ 22
> ACPI: PCI interrupt 0000:00:1d.2[C] -> GSI 21 (level, low) -> IRQ 217
> GSI 23 sharing vector 0xE1 and IRQ 23
> ACPI: PCI interrupt 0000:00:1d.3[D] -> GSI 22 (level, low) -> IRQ 225
> ACPI: PCI interrupt 0000:00:1d.7[A] -> GSI 19 (level, low) -> IRQ 201
> ACPI: PCI interrupt 0000:00:1f.1[A] -> GSI 20 (level, low) -> IRQ 209
> ACPI: PCI interrupt 0000:00:1f.2[B] -> GSI 21 (level, low) -> IRQ 217
> ACPI: PCI interrupt 0000:00:1f.3[B] -> GSI 21 (level, low) -> IRQ 217
> ACPI: PCI interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt 0000:02:01.0[A] -> GSI 17 (level, low) -> IRQ 193
> ACPI: PCI interrupt 0000:02:02.0[A] -> GSI 18 (level, low) -> IRQ 177
> ACPI: PCI interrupt 0000:05:00.0[A] -> GSI 18 (level, low) -> IRQ 177
> ACPI: PCI interrupt 0000:05:00.1[B] -> GSI 19 (level, low) -> IRQ 201
> ACPI: PCI interrupt 0000:08:00.0[A] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt 0000:10:0b.0[A] -> GSI 16 (level, low) -> IRQ 169
> PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
> IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $
> audit: initializing netlink socket (disabled)
> audit(1160580917.790:1): initialized
> Total HugeTLB memory allocated, 0
> VFS: Disk quotas dquot_6.5.1
> Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
> SELinux:  Registering netfilter hooks
> Initializing Cryptographic API
> ksign: Installing public key data
> Loading keyring
> - Added public key AF261CA7E4C0C6EF
> - User ID: CentOS (Kernel Module GPG key)
> pci_hotplug: PCI Hot Plug PCI Core version: 0.5
> ACPI: Processor [CPU0] (supports C1)
> ACPI: Processor [CPU1] (supports C1)
> ACPI: Processor [CPU2] (supports C1)
> ACPI: Processor [CPU3] (supports C1)
> Real Time Clock Driver v1.12
> Linux agpgart interface v0.100 (c) Dave Jones
> i8042.c: No controller found.
> Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing enabled
> RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
> divert: not allocating divert_blk for non-ethernet device lo
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> ESB2: IDE controller at PCI slot 0000:00:1f.1
> ACPI: PCI interrupt 0000:00:1f.1[A] -> GSI 20 (level, low) -> IRQ 209
> ESB2: chipset revision 9
> ESB2: 100% native mode on irq 209
>     ide0: BM-DMA at 0x30c0-0x30c7, BIOS settings: hda:pio, hdb:pio
>     ide1: BM-DMA at 0x30c8-0x30cf, BIOS settings: hdc:pio, hdd:pio
> Probing IDE interface ide0...
> hda: PIONEER DVD-RW DVR-111D, ATAPI CD/DVD-ROM drive
> Using cfq io scheduler
> ide0 at 0x30e8-0x30ef,0x30fe on irq 209
> Probing IDE interface ide1...
> Probing IDE interface ide1...
> Probing IDE interface ide2...
> Probing IDE interface ide3...
> Probing IDE interface ide4...
> Probing IDE interface ide5...
> hda: ATAPI 32X DVD-ROM DVD-R CD-R/RW drive, 2000kB Cache, UDMA(66)
> Uniform CD-ROM driver Revision: 3.20
> APIC error on CPU0: 00(60)
> APIC error on CPU0: 60(60)
> APIC error on CPU0: 60(60)
> ide-floppy driver 0.99.newide
> usbcore: registered new driver hiddev
> usbcore: registered new driver usbhid
> drivers/usb/input/hid-core.c: v2.0:USB HID core driver
> mice: PS/2 mouse device common for all mice
> md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
> NET: Registered protocol family 2
> IP route cache hash table entries: 524288 (order: 10, 4194304 bytes)
> TCP established hash table entries: 262144 (order: 10, 4194304 bytes)
> TCP bind hash table entries: 262144 (order: 10, 4194304 bytes)
> TCP: Hash tables configured (established 262144 bind 262144)
> Initializing IPsec netlink socket
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> ACPI: (supports S0 S1 S3 S4 S5)
> ACPI wakeup devices: 
> P2P5 P2P3 RP04 ARPT UHC1 UHC2 UHC3 UHC4 EHCI AC9M   EC NRP4 SRP1 SRP3 
> Freeing unused kernel memory: 204k freed
> SCSI subsystem initialized
> libata version 1.20 loaded.
> ata_piix 0000:00:1f.2: version 1.05
> ata_piix 0000:00:1f.2: MAP [ P0 P2 P1 P3 ]
> ACPI: PCI interrupt 0000:00:1f.2[B] -> GSI 21 (level, low) -> IRQ 217
> PCI: Setting latency timer of device 0000:00:1f.2 to 64
> ata1: SATA max UDMA/133 cmd 0x30D8 ctl 0x30F6 bmdma 0x3020 irq 217
> ata2: SATA max UDMA/133 cmd 0x30D0 ctl 0x30F2 bmdma 0x3028 irq 217
> ata1: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4023 85:3469 86:3c01 87:4023
88:207f
> ata1: dev 0 ATA-7, max UDMA/133, 488397168 sectors: LBA48
> ata1: dev 0 configured for UDMA/133
> scsi0 : ata_piix
> ata2: SATA port has no device.
> scsi1 : ata_piix
> isa bounce pool size: 16 pages
>   Vendor: ATA       Model: ST3250824AS  P    Rev: 3.BQ
>   Type:   Direct-Access                      ANSI SCSI revision: 05
> SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
> SCSI device sda: drive cache: write back
> SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
> SCSI device sda: drive cache: write back
>  sda: sda1 sda2
> Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
> device-mapper: 4.5.0-ioctl (2005-10-04) initialised: dm-devel at redhat.com
> cdrom: open failed.
> kjournald starting.  Commit interval 5 seconds
> EXT3-fs: mounted filesystem with ordered data mode.
> SELinux:  Disabled at runtime.
> SELinux:  Unregistering netfilter hooks
> inserting floppy driver for 2.6.9-42.0.2.ELsmp
> floppy0: no floppy controllers found
> Intel(R) PRO/1000 Network Driver - version 7.0.33-k2-NAPI
> Copyright (c) 1999-2005 Intel Corporation.
> ACPI: PCI interrupt 0000:05:00.0[A] -> GSI 18 (level, low) -> IRQ 177
> PCI: Setting latency timer of device 0000:05:00.0 to 64
> e1000: 0000:05:00.0: e1000_probe: (PCI Express:2.5Gb/s:Width x4)
00:17:f2:00:46:58
> divert: allocating divert_blk for eth0
> e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
> ACPI: PCI interrupt 0000:05:00.1[B] -> GSI 19 (level, low) -> IRQ 201
> PCI: Setting latency timer of device 0000:05:00.1 to 64
> e1000: 0000:05:00.1: e1000_probe: (PCI Express:2.5Gb/s:Width x4)
00:17:f2:00:46:59
> divert: allocating divert_blk for eth1
> e1000: eth1: e1000_probe: Intel(R) PRO/1000 Network Connection
> ACPI: PCI interrupt 0000:00:1b.0[A] -> GSI 23 (level, low) -> IRQ 185
> PCI: Setting latency timer of device 0000:00:1b.0 to 64
> hw_random: RNG not detected
> nvidia: module license 'NVIDIA' taints kernel.
> ACPI: PCI interrupt 0000:08:00.0[A] -> GSI 16 (level, low) -> IRQ 169
> PCI: Setting latency timer of device 0000:08:00.0 to 64
> NVRM: loading NVIDIA Linux x86_64 Kernel Module  1.0-8774  Tue Aug  1
21:42:17 PDT 2006
> ACPI: PCI interrupt 0000:00:1d.7[A] -> GSI 19 (level, low) -> IRQ 201
> ehci_hcd 0000:00:1d.7: EHCI Host Controller
> PCI: Setting latency timer of device 0000:00:1d.7 to 64
> ehci_hcd 0000:00:1d.7: irq 201, pci mem ffffff0000048800
> ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
> PCI: cache line size of 32 is not supported by device 0000:00:1d.7
> ehci_hcd 0000:00:1d.7: USB 2.0 enabled, EHCI 1.00, driver 2004-May-10
> hub 1-0:1.0: USB hub found
> hub 1-0:1.0: 8 ports detected
> USB Universal Host Controller Interface driver v2.2
> ACPI: PCI interrupt 0000:00:1d.0[A] -> GSI 19 (level, low) -> IRQ 201
> uhci_hcd 0000:00:1d.0: UHCI Host Controller
> PCI: Setting latency timer of device 0000:00:1d.0 to 64
> uhci_hcd 0000:00:1d.0: irq 201, io base 00000000000030a0
> uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
> hub 2-0:1.0: USB hub found
> hub 2-0:1.0: 2 ports detected
> ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 20 (level, low) -> IRQ 209
> uhci_hcd 0000:00:1d.1: UHCI Host Controller
> PCI: Setting latency timer of device 0000:00:1d.1 to 64
> uhci_hcd 0000:00:1d.1: irq 209, io base 0000000000003080
> uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
> hub 3-0:1.0: USB hub found
> hub 3-0:1.0: 2 ports detected
> ACPI: PCI interrupt 0000:00:1d.2[C] -> GSI 21 (level, low) -> IRQ 217
> uhci_hcd 0000:00:1d.2: UHCI Host Controller
> PCI: Setting latency timer of device 0000:00:1d.2 to 64
> uhci_hcd 0000:00:1d.2: irq 217, io base 0000000000003060
> uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
> hub 4-0:1.0: USB hub found
> hub 4-0:1.0: 2 ports detected
> ACPI: PCI interrupt 0000:00:1d.3[D] -> GSI 22 (level, low) -> IRQ 225
> uhci_hcd 0000:00:1d.3: UHCI Host Controller
> PCI: Setting latency timer of device 0000:00:1d.3 to 64
> uhci_hcd 0000:00:1d.3: irq 225, io base 0000000000003040
> uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5
> hub 5-0:1.0: USB hub found
> hub 5-0:1.0: 2 ports detected
> md: Autodetecting RAID arrays.
> md: autorun ...
> md: ... autorun DONE.
> usb 3-2: new full speed USB device using address 2
> hub 3-2:1.0: USB hub found
> hub 3-2:1.0: 1 port detected
> usb 3-2.1: new full speed USB device using address 3
> hub 3-2.1:1.0: USB hub found
> hub 3-2.1:1.0: 3 ports detected
> usb 3-2.1.1: new full speed USB device using address 4
> hub 3-2.1.1:1.0: USB hub found
> hub 3-2.1.1:1.0: 3 ports detected
> usb 3-2.1.3: new low speed USB device using address 5
> hiddev96: USB HID v1.00 Device [Studio Display] on usb-0000:00:1d.1-2.1.3
> NET: Registered protocol family 10
> Disabled Privacy Extensions on device ffffffff804056c0(lo)
> usb 3-2.1.1.1: new low speed USB device using address 6
> IPv6 over IPv4 tunneling driver
> divert: not allocating divert_blk for non-ethernet device sit0
> input: USB HID v1.10 Mouse [Primax Electronics Apple Optical USB Mouse] on
usb-0000:00:1d.1-2.1.1.1
> usb 3-2.1.1.3: new full speed USB device using address 7
> input: USB HID v1.10 Keyboard [Mitsumi Electric Apple Extended USB
Keyboard] on usb-0000:00:1d.1-2.1.1.3
> input: USB HID v1.10 Device [Mitsumi Electric Apple Extended USB Keyboard]
on usb-0000:00:1d.1-2.1.1.3
> drivers/usb/input/hid-input.c: event field not found
> drivers/usb/input/hid-input.c: event field not found
> ACPI: Power Button (FF) [PWRF]
> EXT3 FS on dm-0, internal journal
> device-mapper: dm-multipath version 1.0.4 loaded
> APIC error on CPU1: 00(60)
> cdrom: open failed.
> APIC error on CPU1: 60(60)
> kjournald starting.  Commit interval 5 seconds
> EXT3 FS on sda1, internal journal
> EXT3-fs: mounted filesystem with ordered data mode.
> Adding 2031608k swap on /dev/VolGroup00/LogVol01.  Priority:-1 extents:1
> 
while this isnt directly connected / related to your query : people have 
had much success with centos under parallels, rather than running 
native....

Cant help you directly, with that query of yours, dont have the same 
sort of hardware :)

-- 
Karanbir Singh : http://www.karan.org/ : 2522219 at icq