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Fw: [Bugme-new] [Bug 2782] New: ksoftirqd load system, kernel hang after

To: netdev@xxxxxxxxxxx
Subject: Fw: [Bugme-new] [Bug 2782] New: ksoftirqd load system, kernel hang after a few minuts
From: Andrew Morton <akpm@xxxxxxxx>
Date: Thu, 27 May 2004 11:53:11 -0700
Cc: dav@xxxxxxxxx
Sender: netdev-bounce@xxxxxxxxxxx
Suggest you try an up-to-date kernel.

Begin forwarded message:

Date: Thu, 27 May 2004 09:19:49 -0700
From: bugme-daemon@xxxxxxxx
To: bugme-new@xxxxxxxxxxxxxx
Subject: [Bugme-new] [Bug 2782] New: ksoftirqd load system, kernel hang after a 
few minuts


http://bugme.osdl.org/show_bug.cgi?id=2782

           Summary: ksoftirqd load system, kernel hang after a few minuts
    Kernel Version: 2.4.20-2.4.22
            Status: NEW
          Severity: blocking
             Owner: other_other@xxxxxxxxxxxxxxxxxxxx
         Submitter: dav@xxxxxxxxx


Distribution: Linux/RedHat 9/x86
Hardware Environment:DELL PowerEdge-Dual Intel Xeon CPU 2.4G+hyperthreading
Software Environment:RedHat 9
Problem Description:when network flow is near 15 Mb/s bandwith, ksoftirqd loads 
and kernel freeze after a few minuts

Steps to reproduce:

1. Boot system,
2. put linux system into 2 subnets,
3. generate 15Mb/s bandwith between to interface and wait for 1 hour

--- additional informations ---
This occurs with a lot of kernel tested (2.4.20, 2.4.21, 2.4.22, 2.4.22-ac4) 
and with standard linux RedHat kernel up to kernel-smp-2.4.20-28.9.i686.rpm.

Datas collected when problem occurs :

# cat /proc/version
Linux version 2.4.20-8smp (bhcompile@xxxxxxxxxxxxxxxxxxxxxx) (gcc version 3.2.2 
20030222 (Red Hat Linux 3.2.2-5)) #1 SMP Thu Mar 13 17:45:54 EST 2003

# w | head -1
 22:34:33  up 21 days,  8:04,  3 users,  load average: 1.17, 1.02, 0.99

# ps axuw
USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0  1372  472 ?        S    Oct07   0:20 init
root         2  0.0  0.0     0    0 ?        SW   Oct07   0:00 [migration/0]
root         3  0.0  0.0     0    0 ?        SW   Oct07   0:00 [migration/1]
root         4  0.0  0.0     0    0 ?        SW   Oct07   0:00 [migration/2]
root         5  0.0  0.0     0    0 ?        SW   Oct07   0:00 [migration/3]
root         6  0.0  0.0     0    0 ?        SW   Oct07   0:00 [keventd]
root         7  6.0  0.0     0    0 ?        RWN  Oct07 1862:18 [ksoftirqd_CPU0]
root         8  0.0  0.0     0    0 ?        SWN  Oct07   0:00 [ksoftirqd_CPU1]
root         9  0.0  0.0     0    0 ?        SWN  Oct07   0:00 [ksoftirqd_CPU2]
root        10  0.0  0.0     0    0 ?        SWN  Oct07   0:00 [ksoftirqd_CPU3]
root        15  0.0  0.0     0    0 ?        SW   Oct07   0:00 [bdflush]
root        11  0.0  0.0     0    0 ?        SW   Oct07   0:11 [kswapd]
root        12  0.0  0.0     0    0 ?        SW   Oct07   0:00 [kscand/DMA]
root        13  0.0  0.0     0    0 ?        SW   Oct07   4:43 [kscand/Normal]
root        14  0.0  0.0     0    0 ?        SW   Oct07   5:47 [kscand/HighMem]
root        16  0.0  0.0     0    0 ?        SW   Oct07   0:05 [kupdated]
root        17  0.0  0.0     0    0 ?        SW   Oct07   0:00 [mdrecoveryd]
root        23  0.0  0.0     0    0 ?        SW   Oct07   0:00 [aacraid]
root        24  0.0  0.0     0    0 ?        SW   Oct07   0:00 [scsi_eh_0]
root        27  0.0  0.0     0    0 ?        SW   Oct07   0:02 [kjournald]
root        84  0.0  0.0     0    0 ?        SW   Oct07   0:00 [khubd]
root       642  0.0  0.0     0    0 ?        SW   Oct07   0:00 [kjournald]
root       643  0.0  0.0     0    0 ?        SW   Oct07   0:13 [kjournald]
root      1210  0.0  0.0  1448  588 ?        S    Oct07   0:09 syslogd -m 0
root      1214  0.0  0.0  1368  428 ?        S    Oct07   0:00 klogd -x
root      1266  0.0  0.1  3580 1396 ?        S    Oct07   0:02 /usr/sbin/sshd
.../...

When system is loaded (by process ksoftirq_CPU0), some datas are lost 
(monitorring system reports 
each 10 minuts CRITICAL alerts => 50% of warning report for packet lost).

report trafic when this issue occurs is like this :
.../...
eth5|Recv:  2.169G|Sent:  1.591G|Recv Speed:   1.25Kb/s|Sent speed:   1.03Mb/s|
eth5|Recv:  2.169G|Sent:  1.594G|Recv Speed:       0b/s|Sent speed: 776.96Kb/s|
eth5|Recv:  2.169G|Sent:  1.596G|Recv Speed:   1.75Kb/s|Sent speed: 958.87Kb/s|
eth5|Recv:  2.169G|Sent:  1.599G|Recv Speed:     939b/s|Sent speed: 978.17Kb/s|
eth5|Recv:  2.169G|Sent:  1.603G|Recv Speed:     640b/s|Sent speed:1009.87Kb/s|
eth5|Recv:  2.169G|Sent:  1.607G|Recv Speed:      85b/s|Sent speed:   1.29Mb/s|
eth5|Recv:  2.169G|Sent:  1.611G|Recv Speed:     853b/s|Sent speed:   1.28Mb/s|
eth5|Recv:  2.169G|Sent:  1.615G|Recv Speed:       0b/s|Sent speed:   1.68Mb/s|
.../...

And we can see :

# cat /proc/interrupts
           CPU0       CPU1       CPU2       CPU3
  0:  184391788          0          0          0    IO-APIC-edge  timer
  1:        953          0          0          0    IO-APIC-edge  keyboard
  2:          0          0          0          0          XT-PIC  cascade
  5:          0          0          0          0   IO-APIC-level  usb-ohci
  8:          1          0          0          0    IO-APIC-edge  rtc
 14:          2          0          0          0    IO-APIC-edge  ide0
 16:    6640100          0          0          0   IO-APIC-level  eth0
 20:    2347915          0          0          0   IO-APIC-level  eth2
 21:    3242586          0          0          0   IO-APIC-level  eth3
 28: 1362515262          0          0          0   IO-APIC-level  eth4
 29: 1127825818          0          0          0   IO-APIC-level  eth5
 30:     831193          0          0          0   IO-APIC-level  aacraid
NMI:          0          0          0          0
LOC:  184394043  184394090  184394090  184394089
ERR:          0
MIS:          0

.../...

eth4      Link encap:Ethernet  HWaddr 00:06:5B:F3:61:5F
          inet addr:192.168.20.245  Bcast:192.168.20.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2184189475 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2195331 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:717500525 (684.2 Mb)  TX bytes:153729558 (146.6 Mb)
          Interrupt:28

eth5      Link encap:Ethernet  HWaddr 00:06:5B:F3:61:60
          inet addr:194.xxx.xxx.248  Bcast:194.xxx.xxx.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:26145681 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2205082845 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:2328890724 (2221.0 Mb)  TX bytes:1860452584 (1774.2 Mb)
          Interrupt:29

# cat /proc/modules
tg3                    52904   2
e100                   62340   3
ipt_LOG                 4280   0 (autoclean)
ipt_limit               1688   0 (autoclean)
ipt_REJECT              3928   0 (autoclean)
iptable_mangle          2776   0 (autoclean) (unused)
ipt_state               1080   0 (autoclean)
iptable_nat            22904   0 (autoclean)
ip_conntrack           29696   2 (autoclean) [ipt_state iptable_nat]
iptable_filter          2412   0 (autoclean)
ip_tables              15864   9 [ipt_LOG ipt_limit ipt_REJECT iptable_mangle 
ipt_state iptable_nat iptable_filter]
keybdev                 2976   0 (unused)
mousedev                5656   0 (unused)
hid                    22308   0 (unused)
input                   6208   0 [keybdev mousedev hid]
usb-ohci               22216   0 (unused)
usbcore                82592   1 [hid usb-ohci]
ext3                   73376   3
jbd                    56336   3 [ext3]
aacraid                32580   4
sd_mod                 13452   8
scsi_mod              110488   2 [aacraid sd_mod]
# cat /proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
01f0-01f7 : ide0
02f8-02ff : serial(auto)
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(auto)
08b0-08bf : ServerWorks CSB5 IDE Controller
  08b0-08b7 : ide0
  08b8-08bf : ide1
0cf8-0cff : PCI conf1
9000-9fff : PCI Bus #07
  9800-98ff : Adaptec RAID subsystem HBA (#2)
  9c00-9cff : Adaptec RAID subsystem HBA
c000-cfff : PCI Bus #03
  ccc0-ccdf : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#4)
    ccc0-ccdf : e100
  cce0-ccff : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#3)
    cce0-ccff : e100
d000-dfff : PCI Bus #02
  dcc0-dcdf : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#2)
    dcc0-dcdf : e100
  dce0-dcff : Intel Corp. 82557/8/9 [Ethernet Pro 100]
    dce0-dcff : e100
e800-e8ff : ATI Technologies Inc Rage XL
ec80-ecbf : Dell Computer Corporation PowerEdge Expandable RAID Controller 3/Di
ece8-ecef : Dell Computer Corporation Embedded Systems Management Device 4
ecf4-ecf7 : PCI device 1028:000d (Dell Computer Corporation)
ecf8-ecff : Dell Computer Corporation Embedded Systems Management Device 4

# cat /proc/iomem
00000000-0009ffff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000cc000-000cc5ff : Extension ROM
000f0000-000fffff : System ROM
00100000-3ffeffff : System RAM
  00100000-002720eb : Kernel code
  002720ec-00383ba3 : Kernel data
3fff0000-3fffebff : ACPI Tables
3fffec00-3fffefff : reserved
f0000000-f7ffffff : Dell Computer Corporation PowerEdge Expandable RAID 
Controller 3
fc300000-fc4fffff : PCI Bus #07
  fc3fe000-fc3fefff : Adaptec RAID subsystem HBA (#2)
  fc3ff000-fc3fffff : Adaptec RAID subsystem HBA
fc600000-fc60ffff : Broadcom Corporation NetXtreme BCM5701 Gigabit Ethernet (#2)
  fc600000-fc60ffff : tg3
fc610000-fc61ffff : Broadcom Corporation NetXtreme BCM5701 Gigabit Ethernet
  fc610000-fc61ffff : tg3
fc700000-fc7fffff : PCI Bus #03
  fc7fe000-fc7fefff : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#4)
    fc7fe000-fc7fefff : e100
  fc7ff000-fc7fffff : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#3)
    fc7ff000-fc7fffff : e100
fc800000-fc8fffff : PCI Bus #02
  fc8fe000-fc8fefff : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#2)
    fc8fe000-fc8fefff : e100
  fc8ff000-fc8fffff : Intel Corp. 82557/8/9 [Ethernet Pro 100]
    fc8ff000-fc8fffff : e100
fca00000-fccfffff : PCI Bus #03
  fca00000-fcafffff : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#4)
    fca00000-fcafffff : e100
  fcb00000-fcbfffff : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#3)
    fcb00000-fcbfffff : e100
fcd00000-fcffffff : PCI Bus #02
  fcd00000-fcdfffff : Intel Corp. 82557/8/9 [Ethernet Pro 100] (#2)
    fcd00000-fcdfffff : e100
  fce00000-fcefffff : Intel Corp. 82557/8/9 [Ethernet Pro 100]
    fce00000-fcefffff : e100
fd000000-fdffffff : ATI Technologies Inc Rage XL
fe100000-fe100fff : ServerWorks OSB4/CSB5 OHCI USB Controller
  fe100000-fe100fff : usb-ohci
fe101000-fe101fff : ATI Technologies Inc Rage XL
fe102000-fe102fff : Dell Computer Corporation PowerEdge Expandable RAID 
Controller 3/Di
feb00000-feb7ffff : Dell Computer Corporation PowerEdge Expandable RAID 
Controller 3/Di
feb80000-feb80fff : Dell Computer Corporation Embedded Systems Management 
Device 4
fec00000-fec0ffff : reserved
fee00000-fee0ffff : reserved
fff80000-ffffffff : reserved

00:00.0 Host bridge: ServerWorks CMIC-LE (rev 13)
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR-
00:00.1 Host bridge: ServerWorks CMIC-LE
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR-
00:00.2 Host bridge: ServerWorks: Unknown device 0000
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR-
00:04.0 Class ff00: Dell Computer Corporation Embedded Systems Management 
Device 4
        Subsystem: Dell Computer Corporation Embedded Systems Management Device 
4
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32, cache line size 10
        Interrupt: pin A routed to IRQ 19
        Region 0: Memory at feb80000 (32-bit, prefetchable) [size=4K]
        Region 1: I/O ports at ecf8 [size=8]
        Region 2: I/O ports at ece8 [size=8]
        Expansion ROM at fe000000 [disabled] [size=64K]
        Capabilities: [48] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:04.1 Class ff00: Dell Computer Corporation PowerEdge Expandable RAID 
Controller 3/Di
        Subsystem: Dell Computer Corporation PowerEdge Expandable RAID 
Controller 3/Di
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin B routed to IRQ 23
        Region 0: Memory at fe102000 (32-bit, non-prefetchable) [size=4K]
        Region 1: I/O ports at ec80 [size=64]
        Region 2: Memory at feb00000 (32-bit, prefetchable) [size=512K]
        Capabilities: [48] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:04.2 Class 0c07: Dell Computer Corporation: Unknown device 000d
        Subsystem: Dell Computer Corporation: Unknown device 000d
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin C routed to IRQ 27
        Region 0: I/O ports at ecf4 [size=4]
        Capabilities: [48] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0e.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) (prog-
if 00 [VGA])
        Subsystem: Dell Computer Corporation: Unknown device 0121
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop+ ParErr- 
Stepping+ SERR- FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (2000ns min), cache line size 10
        Region 0: Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
        Region 1: I/O ports at e800 [size=256]
        Region 2: Memory at fe101000 (32-bit, non-prefetchable) [size=4K]
        Expansion ROM at <unassigned> [disabled] [size=128K]
        Capabilities: [5c] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0f.0 Host bridge: ServerWorks CSB5 South Bridge (rev 93)
        Subsystem: ServerWorks CSB5 South Bridge
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ 
Stepping- SERR+ FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort+ >SERR- <PERR-
        Latency: 32
00:0f.1 IDE interface: ServerWorks CSB5 IDE Controller (rev 93) (prog-if 82 
[Master PriP])
        Subsystem: ServerWorks CSB5 IDE Controller
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ 
Stepping- SERR+ FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64
        Region 0: I/O ports at <ignored>
        Region 1: I/O ports at <ignored>
        Region 2: I/O ports at <ignored>
        Region 3: I/O ports at <ignored>
        Region 4: I/O ports at 08b0 [size=16]
00:0f.2 USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 05) 
(prog-if 10 [OHCI])
        Subsystem: ServerWorks OSB4/CSB5 OHCI USB Controller
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr+ 
Stepping- SERR+ FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (20000ns max)
        Interrupt: pin A routed to IRQ 5
        Region 0: Memory at fe100000 (32-bit, non-prefetchable) [size=4K]
00:0f.3 ISA bridge: ServerWorks GCLE Host Bridge
        Subsystem: ServerWorks: Unknown device 0230
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0
00:10.0 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort+ >SERR- <PERR-
        Capabilities: [60] PCI-X non-bridge device.
                Command: DPERE- ERO- RBC=0 OST=4
                Status: Bus=0 Dev=0 Func=0 64bit- 133MHz- SCD- USC-, DC=simple, 
DMMRBC=0, DMOST=0, DMCRS=0, RSCEM-
00:10.2 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort+ >SERR- <PERR-
        Capabilities: [60] PCI-X non-bridge device.
                Command: DPERE- ERO- RBC=0 OST=4
                Status: Bus=0 Dev=0 Func=0 64bit- 133MHz- SCD- USC-, DC=simple, 
DMMRBC=0, DMOST=0, DMCRS=0, RSCEM-
00:11.0 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort+ >SERR- <PERR-
        Capabilities: [60] PCI-X non-bridge device.
                Command: DPERE- ERO- RBC=0 OST=4
                Status: Bus=0 Dev=0 Func=0 64bit- 133MHz- SCD- USC-, DC=simple, 
DMMRBC=0, DMOST=0, DMCRS=0, RSCEM-
00:11.2 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort+ >SERR- <PERR-
        Capabilities: [60] PCI-X non-bridge device.
                Command: DPERE- ERO- RBC=0 OST=4
                Status: Bus=0 Dev=0 Func=0 64bit- 133MHz- SCD- USC-, DC=simple, 
DMMRBC=0, DMOST=0, DMCRS=0, RSCEM-
01:06.0 PCI bridge: Intel Corp. 21152 PCI-to-PCI Bridge (prog-if 00 [Normal 
decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32, cache line size 10
        Bus: primary=01, secondary=02, subordinate=02, sec-latency=32
        I/O behind bridge: 0000d000-0000dfff
        Memory behind bridge: fcd00000-fcffffff
        Prefetchable memory behind bridge: 00000000fc800000-00000000fc800000
        BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
        Capabilities: [dc] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
                Bridge: PM- B3+
01:08.0 PCI bridge: Intel Corp. 21152 PCI-to-PCI Bridge (prog-if 00 [Normal 
decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32, cache line size 10
        Bus: primary=01, secondary=03, subordinate=03, sec-latency=32
        I/O behind bridge: 0000c000-0000cfff
        Memory behind bridge: fca00000-fccfffff
        Prefetchable memory behind bridge: 00000000fc700000-00000000fc700000
        BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
        Capabilities: [dc] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
                Bridge: PM- B3+
02:04.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 05)
        Subsystem: Intel Corp. EtherExpress PRO/100+ Dual Port Adapter
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (2000ns min, 14000ns max), cache line size 10
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at fc8ff000 (32-bit, prefetchable) [size=4K]
        Region 1: I/O ports at dce0 [size=32]
        Region 2: Memory at fce00000 (32-bit, non-prefetchable) [size=1M]
        Capabilities: [dc] Power Management version 1
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME
(D0+,D1+,D2+,D3hot+,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
02:05.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 05)
        Subsystem: Intel Corp. EtherExpress PRO/100+ Dual Port Adapter
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (2000ns min, 14000ns max), cache line size 10
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at fc8fe000 (32-bit, prefetchable) [size=4K]
        Region 1: I/O ports at dcc0 [size=32]
        Region 2: Memory at fcd00000 (32-bit, non-prefetchable) [size=1M]
        Capabilities: [dc] Power Management version 1
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME
(D0+,D1+,D2+,D3hot+,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
03:04.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 05)
        Subsystem: Intel Corp. EtherExpress PRO/100+ Dual Port Adapter
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (2000ns min, 14000ns max), cache line size 10
        Interrupt: pin A routed to IRQ 20
        Region 0: Memory at fc7ff000 (32-bit, prefetchable) [size=4K]
        Region 1: I/O ports at cce0 [size=32]
        Region 2: Memory at fcb00000 (32-bit, non-prefetchable) [size=1M]
        Capabilities: [dc] Power Management version 1
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME
(D0+,D1+,D2+,D3hot+,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
03:05.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 05)
        Subsystem: Intel Corp. EtherExpress PRO/100+ Dual Port Adapter
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (2000ns min, 14000ns max), cache line size 10
        Interrupt: pin A routed to IRQ 21
        Region 0: Memory at fc7fe000 (32-bit, prefetchable) [size=4K]
        Region 1: I/O ports at ccc0 [size=32]
        Region 2: Memory at fca00000 (32-bit, non-prefetchable) [size=1M]
        Capabilities: [dc] Power Management version 1
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME
(D0+,D1+,D2+,D3hot+,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
05:06.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5701 Gigabit 
Ethernet (rev 15)
        Subsystem: Dell Computer Corporation Broadcom BCM5701 1000Base-T
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (16000ns min), cache line size 10
        Interrupt: pin A routed to IRQ 28
        Region 0: Memory at fc610000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [40] PCI-X non-bridge device.
                Command: DPERE- ERO- RBC=0 OST=0
                Status: Bus=0 Dev=0 Func=0 64bit- 133MHz- SCD- USC-, DC=simple, 
DMMRBC=0, DMOST=0, DMCRS=0, RSCEM-      Capabilities: [48] Power Management 
version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [50] Vital Product Data
        Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3 
Enable-
                Address: 52f48734a4062484  Data: c906
05:08.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5701 Gigabit 
Ethernet (rev 15)
        Subsystem: Dell Computer Corporation Broadcom BCM5701 1000Base-T
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (16000ns min), cache line size 10
        Interrupt: pin A routed to IRQ 29
        Region 0: Memory at fc600000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [40] PCI-X non-bridge device.
                Command: DPERE- ERO- RBC=0 OST=0
                Status: Bus=0 Dev=0 Func=0 64bit- 133MHz- SCD- USC-, DC=simple, 
DMMRBC=0, DMOST=0, DMCRS=0, RSCEM-      Capabilities: [48] Power Management 
version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [50] Vital Product Data
        Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3 
Enable-
                Address: d616aa75c6ef8af0  Data: 80a0
06:08.0 PCI bridge: Intel Corp.: Unknown device 0309 (rev 01) (prog-if 00 
[Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- 
<MAbort- >SERR- <PERR-
        Latency: 32, cache line size 10
        Bus: primary=06, secondary=07, subordinate=07, sec-latency=32
        I/O behind bridge: 00009000-00009fff
        Memory behind bridge: fc300000-fc4fffff
        Prefetchable memory behind bridge: fff00000-000fffff
        BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
        Capabilities: [68] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
06:08.1 RAID bus controller: Dell Computer Corporation PowerEdge Expandable 
RAID Controller 3 (rev 01)
        Subsystem: Dell Computer Corporation PowerEdge Expandable RAID 
Controller 3/Di
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- 
<MAbort- >SERR- <PERR-
        Latency: 32, cache line size 10
        Interrupt: pin A routed to IRQ 30
        Region 0: Memory at f0000000 (32-bit, prefetchable) [size=128M]
        Expansion ROM at fc200000 [disabled] [size=64K]
        Capabilities: [80] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
07:06.0 SCSI storage controller: Adaptec RAID subsystem HBA (rev 01)
        Subsystem: Dell Computer Corporation PowerEdge 2550
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (10000ns min, 6250ns max), cache line size 10
        Interrupt: pin A routed to IRQ 30
        BIST result: 00
        Region 0: I/O ports at 9c00 [size=256]
        Region 1: Memory at fc3ff000 (64-bit, non-prefetchable) [size=4K]
        Expansion ROM at fc400000 [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
07:06.1 SCSI storage controller: Adaptec RAID subsystem HBA (rev 01)
        Subsystem: Dell Computer Corporation PowerEdge 2550
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- 
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (10000ns min, 6250ns max), cache line size 10
        Interrupt: pin B routed to IRQ 31
        BIST result: 00
        Region 0: I/O ports at 9800 [size=256]
        Region 1: Memory at fc3fe000 (64-bit, non-prefetchable) [size=4K]
        Expansion ROM at fc400000 [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-
,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-


# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: DELL     Model: PERCRAID RAID10  Rev: V1.0
  Type:   Direct-Access                    ANSI SCSI revision: 02

# cat /proc/net/netstat
TcpExt: SyncookiesSent SyncookiesRecv SyncookiesFailed EmbryonicRsts 
PruneCalled RcvPruned OfoPruned OutOfWindowIcmps LockDroppedIcmps ArpFilter TW 
TWRecycled TWKilled PAWSPassive PAWSActive PAWSEstab DelayedACKs 
DelayedACKLocked DelayedACKLost ListenOverflows ListenDrops TCPPrequeued 
TCPDirectCopyFromBacklog TCPDirectCopyFromPrequeue TCPPrequeueDropped TCPHPHits 
TCPHPHitsToUser TCPPureAcks TCPHPAcks TCPRenoRecovery TCPSackRecovery 
TCPSACKReneging TCPFACKReorder TCPSACKReorder TCPRenoReorder TCPTSReorder 
TCPFullUndo TCPPartialUndo TCPDSACKUndo TCPLossUndo TCPLoss TCPLostRetransmit 
TCPRenoFailures TCPSackFailures TCPLossFailures TCPFastRetrans 
TCPForwardRetrans TCPSlowStartRetrans TCPTimeouts TCPRenoRecoveryFail 
TCPSackRecoveryFail TCPSchedulerFailed TCPRcvCollapsed TCPDSACKOldSent 
TCPDSACKOfoSent TCPDSACKRecv TCPDSACKOfoRecv TCPAbortOnSyn TCPAbortOnData 
TCPAbortOnClose TCPAbortOnMemory TCPAbortOnTimeout TCPAbortOnLinger 
TCPAbortFailed TCPMemoryPressures
TcpExt: 0 0 0 23 0 0 0 0 0 0 5 0 0 0 0 0 17865 1 12 0 0 8574 0 9 0 197814 0 
458166 187419 0 77 0 0 0 0 0 0 0 0 3 41 0 0 38 0 89 0 42 118 0 13 0 0 39 0 3 0 
0 4 1 0 0 0 0 0
 
 
# sh ver_linux
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
Linux FW2 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 
GNU/Linux
Gnu C                  18:
Gnu make               3.79.1
util-linux             2.11y
mount                  2.11y
modutils               2.4.22
e2fsprogs              1.32
Linux C Library        2.3.2
Dynamic linker (ldd)   2.3.2
Procps                 2.0.11
Net-tools              1.60
Kbd                    1.08
Sh-utils               4.5.3
Modules Loaded         tg3 e100 ipt_LOG ipt_limit ipt_REJECT iptable_mangle 
ipt_state iptable_nat ip_conntrack iptable_filter ip_tables keybdev mousedev 
hid input usb-ohci usbcore ext3 jbd aacraid sd_mod scsi_mod
 
# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.40GHz
stepping        : 7
cpu MHz         : 2392.327
cache size      : 512 KB
physical id     : 0
siblings        : 2
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        : 4771.02
processor       : 1
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.40GHz
stepping        : 7
cpu MHz         : 2392.327
cache size      : 512 KB
physical id     : 0
siblings        : 2
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        : 4784.12
processor       : 2
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.40GHz
stepping        : 7
cpu MHz         : 2392.327
cache size      : 512 KB
physical id     : 3
siblings        : 2
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        : 4784.12
processor       : 3
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.40GHz
stepping        : 7
cpu MHz         : 2392.327
cache size      : 512 KB
physical id     : 3
siblings        : 2
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        : 4784.12

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