RH 7.3 only showing 3 CPU's w/Hyperthreading

From: Jonathan Saplan (jonathan.saplan_at_germanesys.com)
Date: 06/14/05

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Date: Tue, 14 Jun 2005 10:57:13 -0400
To: redhat-list@redhat.com

Not sure whats causing this, its intermitent and goes away if the
machine is rebooted. Have a Supermicro X5DPR-8G2+ motherboard with dual
2.4 Xeons. There aren't any additional cards, its a pretty vanilla
server. We're booting to a flash card with RH 7.3 and sometimes get 3
CPU's instead of 4. Here's a copy of dmesg output, cpuinfo and kernel
version

goMIPS
Memory: 3996968k/4194304k available (1213k kernel code, 61076k reserved,
995k data, 140k init, 3145152k highmem)
Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
Inode cache hash table entries: 262144 (order: 9, 2097152 bytes)
Mount cache hash table entries: 65536 (order: 7, 524288 bytes)
ramfs: mounted with options: <defaults>
ramfs: max_pages=500149 max_file_pages=0 max_inodes=0 max_dentries=500149
Buffer cache hash table entries: 262144 (order: 8, 1048576 bytes)
Page-cache hash table entries: 524288 (order: 9, 2097152 bytes)
CPU: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 0K, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
CPU: After vendor init, caps: bfebfbff 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: bfebfbff 00000000 00000000 00000000
CPU: Common caps: bfebfbff 00000000 00000000 00000000
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
CPU: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 0K, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
CPU: After vendor init, caps: bfebfbff 00000000 00000000 00000000
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: bfebfbff 00000000 00000000 00000000
CPU: Common caps: bfebfbff 00000000 00000000 00000000
CPU0: Intel(R) Xeon(TM) CPU 2.40GHz stepping 05
per-CPU timeslice cutoff: 1462.99 usecs.
task migration cache decay timeout: 1 msecs.
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Booting processor 1/1 eip 2000
Not responding.
CPU #1 not responding - cannot use it.
Booting processor 1/6 eip 2000
Initializing CPU#1
masked ExtINT on CPU#1
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Calibrating delay loop... 4784.26 BogoMIPS
CPU: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 0K, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 3
CPU: After vendor init, caps: bfebfbff 00000000 00000000 00000000
Intel machine check reporting enabled on CPU#1.
CPU: After generic, caps: bfebfbff 00000000 00000000 00000000
CPU: Common caps: bfebfbff 00000000 00000000 00000000
CPU1: Intel(R) Xeon(TM) CPU 2.40GHz stepping 05
Booting processor 2/7 eip 2000
Initializing CPU#2
masked ExtINT on CPU#2
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Calibrating delay loop... 4784.26 BogoMIPS
CPU: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 0K, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 3
CPU: After vendor init, caps: bfebfbff 00000000 00000000 00000000
Intel machine check reporting enabled on CPU#2.
CPU: After generic, caps: bfebfbff 00000000 00000000 00000000
CPU: Common caps: bfebfbff 00000000 00000000 00000000
CPU2: Intel(R) Xeon(TM) CPU 2.40GHz stepping 05
Total of 3 processors activated (14336.59 BogoMIPS).
WARNING: No sibling found for CPU 0.
cpu_sibling_map[1] = 2
cpu_sibling_map[2] = 1
ENABLING IO-APIC IRQs
Setting 2 in the phys_id_present_map
...changing IO-APIC physical APIC ID to 2 ... ok.
Setting 3 in the phys_id_present_map
...changing IO-APIC physical APIC ID to 3 ... ok.
Setting 4 in the phys_id_present_map
...changing IO-APIC physical APIC ID to 4 ... ok.
init IO_APIC IRQs
IO-APIC (apicid-pin) 2-0, 2-10, 2-11, 2-17, 2-20, 2-21, 2-22, 2-23,
3-0, 3-1, 3-2, 3-3, 3-6, 3-7, 3-8, 3-9, 3-10, 3-11, 3-12, 3-13, 3-14,
3-15, 3-16, 3-17, 3-18, 3-19, 3-20, 3-21, 3-22, 3-23, 4-0, 4-1, 4-2,
4-3, 4-4, 4-5, 4-8, 4-9, 4-10, 4-11, 4-12, 4-13, 4-14, 4-15, 4-16, 4-17,
4-18, 4-19, 4-20, 4-21, 4-22, 4-23 not connected.
..TIMER: vector=0x31 pin1=2 pin2=0
number of MP IRQ sources: 22.
number of IO-APIC #2 registers: 24.
number of IO-APIC #3 registers: 24.
number of IO-APIC #4 registers: 24.
testing the IO APIC.......................

IO APIC #2......
.... register #00: 02008000
....... : physical APIC id: 02
WARNING: unexpected IO-APIC, please mail
to linux-smp@vger.kernel.org
.... register #01: 00178020
....... : max redirection entries: 0017
....... : PRQ implemented: 1
....... : IO APIC version: 0020
.... register #02: 00000000
....... : arbitration: 00
.... IRQ redirection table:
NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:
00 000 00 1 0 0 0 0 0 0 00
01 007 07 0 0 0 0 0 1 1 39
02 001 01 0 0 0 0 0 1 1 31
03 007 07 0 0 0 0 0 1 1 41
04 007 07 0 0 0 0 0 1 1 49
05 007 07 0 0 0 0 0 1 1 51
06 007 07 0 0 0 0 0 1 1 59
07 007 07 0 0 0 0 0 1 1 61
08 007 07 0 0 0 0 0 1 1 69
09 007 07 0 0 0 0 0 1 1 71
0a 000 00 1 0 0 0 0 0 0 00
0b 000 00 1 0 0 0 0 0 0 00
0c 007 07 0 0 0 0 0 1 1 79
0d 007 07 0 0 0 0 0 1 1 81
0e 007 07 0 0 0 0 0 1 1 89
0f 007 07 0 0 0 0 0 1 1 91
10 007 07 1 1 0 1 0 1 1 99
11 000 00 1 0 0 0 0 0 0 00
12 007 07 1 1 0 1 0 1 1 A1
13 007 07 1 1 0 1 0 1 1 A9
14 000 00 1 0 0 0 0 0 0 00
15 000 00 1 0 0 0 0 0 0 00
16 000 00 1 0 0 0 0 0 0 00
17 000 00 1 0 0 0 0 0 0 00

IO APIC #3......
.... register #00: 03000000
....... : physical APIC id: 03
.... register #01: 00178020
....... : max redirection entries: 0017
....... : PRQ implemented: 1
....... : IO APIC version: 0020
.... register #02: 03000000
....... : arbitration: 03
.... IRQ redirection table:
NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:
00 000 00 1 0 0 0 0 0 0 00
01 000 00 1 0 0 0 0 0 0 00
02 000 00 1 0 0 0 0 0 0 00
03 000 00 1 0 0 0 0 0 0 00
04 007 07 1 1 0 1 0 1 1 B1
05 007 07 1 1 0 1 0 1 1 B9
06 000 00 1 0 0 0 0 0 0 00
07 000 00 1 0 0 0 0 0 0 00
08 000 00 1 0 0 0 0 0 0 00
09 000 00 1 0 0 0 0 0 0 00
0a 000 00 1 0 0 0 0 0 0 00
0b 000 00 1 0 0 0 0 0 0 00
0c 000 00 1 0 0 0 0 0 0 00
0d 000 00 1 0 0 0 0 0 0 00
0e 000 00 1 0 0 0 0 0 0 00
0f 000 00 1 0 0 0 0 0 0 00
10 000 00 1 0 0 0 0 0 0 00
11 000 00 1 0 0 0 0 0 0 00
12 000 00 1 0 0 0 0 0 0 00
13 000 00 1 0 0 0 0 0 0 00
14 000 00 1 0 0 0 0 0 0 00
15 000 00 1 0 0 0 0 0 0 00
16 000 00 1 0 0 0 0 0 0 00
17 000 00 1 0 0 0 0 0 0 00

IO APIC #4......
.... register #00: 04000000
....... : physical APIC id: 04
.... register #01: 00178020
....... : max redirection entries: 0017
....... : PRQ implemented: 1
....... : IO APIC version: 0020
.... register #02: 04000000
....... : arbitration: 04
.... IRQ redirection table:
NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:
00 000 00 1 0 0 0 0 0 0 00
01 000 00 1 0 0 0 0 0 0 00
02 000 00 1 0 0 0 0 0 0 00
03 000 00 1 0 0 0 0 0 0 00
04 000 00 1 0 0 0 0 0 0 00
05 000 00 1 0 0 0 0 0 0 00
06 007 07 1 1 0 1 0 1 1 C1
07 007 07 1 1 0 1 0 1 1 C9
08 000 00 1 0 0 0 0 0 0 00
09 000 00 1 0 0 0 0 0 0 00
0a 000 00 1 0 0 0 0 0 0 00
0b 000 00 1 0 0 0 0 0 0 00
0c 000 00 1 0 0 0 0 0 0 00
0d 000 00 1 0 0 0 0 0 0 00
0e 000 00 1 0 0 0 0 0 0 00
0f 000 00 1 0 0 0 0 0 0 00
10 000 00 1 0 0 0 0 0 0 00
11 000 00 1 0 0 0 0 0 0 00
12 000 00 1 0 0 0 0 0 0 00
13 000 00 1 0 0 0 0 0 0 00
14 000 00 1 0 0 0 0 0 0 00
15 000 00 1 0 0 0 0 0 0 00
16 000 00 1 0 0 0 0 0 0 00
17 000 00 1 0 0 0 0 0 0 00
IRQ to pin mappings:
IRQ0 -> 0:2
IRQ1 -> 0:1
IRQ3 -> 0:3
IRQ4 -> 0:4
IRQ5 -> 0:5
IRQ6 -> 0:6
IRQ7 -> 0:7
IRQ8 -> 0:8
IRQ9 -> 0:9
IRQ12 -> 0:12
IRQ13 -> 0:13
IRQ14 -> 0:14
IRQ15 -> 0:15
IRQ16 -> 0:16
IRQ18 -> 0:18
IRQ19 -> 0:19
IRQ28 -> 1:4
IRQ29 -> 1:5
IRQ54 -> 2:6
IRQ55 -> 2:7
.................................... done.
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 2399.0170 MHz.
..... host bus clock speed is 133.0551 MHz.
cpu: 0, clocks: 260300, slice: 65075
CPU0<T0:260288,T1:195200,D:13,S:65075,C:260300>
cpu: 1, clocks: 260300, slice: 65075
cpu: 2, clocks: 260300, slice: 65075
CPU2<T0:260288,T1:65056,D:7,S:65075,C:260300>
CPU1<T0:260288,T1:130128,D:10,S:65075,C:260300>
checking TSC synchronization across CPUs: passed.
migration_task 0 on cpu=0
migration_task 1 on cpu=1
migration_task 2 on cpu=2
PCI: PCI BIOS revision 2.10 entry at 0xfd8c5, last bus=4
PCI: Using configuration type 1
PCI: Probing PCI hardware
Transparent bridge - Intel Corp. 82801BA/CA/DB PCI Bridge
PCI: Discovered primary peer bus 10 [IRQ]
PCI: Discovered primary peer bus 11 [IRQ]
PCI: Discovered primary peer bus 12 [IRQ]
PCI: Using IRQ router PIIX [8086/2480] at 00:1f.0
PCI->APIC IRQ transform: (B0,I29,P0) -> 16
PCI->APIC IRQ transform: (B0,I29,P1) -> 19
PCI->APIC IRQ transform: (B0,I29,P2) -> 18
PCI->APIC IRQ transform: (B2,I3,P0) -> 54
PCI->APIC IRQ transform: (B2,I3,P1) -> 55
PCI->APIC IRQ transform: (B3,I2,P0) -> 28
PCI->APIC IRQ transform: (B3,I2,P1) -> 29
PCI->APIC IRQ transform: (B4,I1,P0) -> 16
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
speakup: initialized device: /dev/synth, node (MAJOR 10, MINOR 25)
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16)
apm: disabled - APM is not SMP safe.
Starting kswapd
allocated 64 pages and 64 bhs reserved for the highmem bounces
VFS: Diskquotas version dquot_6.5.0 initialized
pty: 2048 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT
SHARE_IRQ SERIAL_PCI ISAPNP enabled
ttyS0 at 0x03f8 (irq = 4) is a 16550A
ttyS1 at 0x02f8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10e
block: 1024 slots per queue, batch=256
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev f9
PCI: No IRQ known for interrupt pin A of device 00:1f.1. Probably buggy
MP table.
PIIX4: chipset revision 2
PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x2060-0x2067, BIOS settings: hda:pio, hdb:pio
    ide1: BM-DMA at 0x2068-0x206f, BIOS settings: hdc:pio, hdd:pio
hda: 2048MB CKS, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
blk: queue c03e4664, I/O limit 4095Mb (mask 0xffffffff)
blk: queue c03e4664, I/O limit 4095Mb (mask 0xffffffff)
hda: 4029984 sectors (2063 MB) w/0KiB Cache, CHS=999/64/63
ide-floppy driver 0.99.newide
Partition check:
hda: hda1 hda2
floppy0: no floppy controllers found
NET4: Frame Diverter 0.46
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
ide-floppy driver 0.99.newide
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 32768 buckets, 256Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 268k freed
VFS: Mounted root (ext2 filesystem).
SCSI subsystem driver Revision: 1.00
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
scsi0 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 2.0.2
        <Adaptec AIC7902 Ultra320 SCSI adapter>
        aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 101-133Mhz,
512 SCBs

scsi1 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 2.0.2
<Adaptec AIC7902 Ultra320 SCSI adapter>
aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 101-133Mhz,
512 SCBs

blk: queue c624d018, I/O limit 4095Mb (mask 0xffffffff)
blk: queue c624d018, I/O limit 4095Mb (mask 0xffffffff)
Journalled Block Device driver loaded
hda: hda1 hda2
hda: hda1 hda2
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Freeing unused kernel memory: 140k freed
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.275 $ time 20:38:49 Sep 20 2004
usb-uhci.c: High bandwidth mode enabled
PCI: Setting latency timer of device 00:1d.0 to 64
usb-uhci.c: USB UHCI at I/O 0x2000, IRQ 16
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Setting latency timer of device 00:1d.1 to 64
usb-uhci.c: USB UHCI at I/O 0x2020, IRQ 19
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Setting latency timer of device 00:1d.2 to 64
usb-uhci.c: USB UHCI at I/O 0x2040, IRQ 18
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 3
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,2), internal journal
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,1), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
Intel(R) PRO/1000 Network Driver - version 5.2.52
Copyright (c) 1999-2004 Intel Corporation.
e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
divert: allocating divert_blk for eth0
e1000: eth1: e1000_probe: Intel(R) PRO/1000 Network Connection
divert: allocating divert_blk for eth1
e1000: eth0: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
i2c-core.o: i2c core module
i2c-isa.o version 2.6.3 (20020322)
i2c-core.o: adapter ISA main adapter registered as adapter 0.
i2c-isa.o: ISA bus access for i2c modules initialized.
i2c-proc.o version 2.6.1 (20010825)
w83781d.o version 2.6.3 (20020322)
i2c-core.o: driver W83781D sensor driver registered.
i2c-core.o: client [W83627HF chip] registered to adapter [ISA main
adapter](pos. 0).

cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Xeon(TM) CPU 2.40GHz
stepping : 5
cpu MHz : 2399.248
cache size : 512 KB
Physical processor ID : 0
Number of siblings : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
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
bogomips : 4767.06

processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Xeon(TM) CPU 2.40GHz
stepping : 5
cpu MHz : 2399.248
cache size : 512 KB
Physical processor ID : 3
Number of siblings : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
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
bogomips : 4784.26

processor : 2
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Xeon(TM) CPU 2.40GHz
stepping : 5
cpu MHz : 2399.248
cache size : 512 KB
Physical processor ID : 3
Number of siblings : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
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
bogomips : 4784.26

uname -a
Linux TIO4-S02 2.4.18-19.7.x #2 SMP Mon Sep 20 20:44:31 GMT 2004 i686
unknown

-- 
Jonathan Saplan
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Next message: Will McDonald: "Re: Kernic panic when booting 2.6.9-11ELSmp"

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