A faulty network interface will create congestion to the network traffic at where it
listens to. It will also slow down the machine because of doing error corrections.

I guess your have a faculty network interface. You can try to detach it and test in a
separate machine and observe the result.

Good luck.

On 4 Jun 2002 at 7:54, Miguel Gonçalves wrote:

> Hi!
>
> I am having a problem with OpenBSD/i386 3.1. I have a
> machine with 3 NICs (2 fxp and 1 dc). When I activate the dc
> interface my clock runs very slowly and even NTP can't
> correct it. If I 'ifconfig dc0 down' everything is fine.
> I've included the dmesg output and the 'ifconfig -a' output.
>
> TIA,
> Miguel Gonçalves
>
> OpenBSD 3.1 (GENERIC) #0: Tue May 21 00:57:26 WEST 2002
> rootmiguelg:/usr/src/sys/arch/i386/compile/GENERIC
> cpu0: Intel Pentium III ("GenuineIntel" 686-class, 512KB L2
> cache) 451 MHz
> cpu0:
> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SYS,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SIMD
> real mem = 536444928 (523872K)
> avail mem = 491581440 (480060K)
> using 5689 buffers containing 26927104 bytes (26296K) of
> memory
> mainbus0 (root)
> bios0 at mainbus0: AT/286+(06) BIOS, date 03/03/00, BIOS32
> rev. 0 0xf0520
> apm0 at bios0: Power Management spec V1.2
> apm0: AC on, battery charge unknown
> pcibios0 at bios0: rev. 2.1 0xf0000/0xd92
> pcibios0: PCI IRQ Routing Table rev. 1.0 0xf0d10/128 (6
> entries)
> pcibios0: PCI Interrupt Router at 000:04:0 ("Intel 82371FB
> PCI-ISA" rev 0x00)
> pcibios0: PCI bus #1 is the last bus
> bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000
> 0xcc000/0x1000
> pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> pchb0 at pci0 dev 0 function 0 "Intel 82443BX PCI-AGP" rev
> 0x02
> ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x02
> pci1 at ppb0 bus 1
> pcib0 at pci0 dev 4 function 0 "Intel 82371AB PIIX4 ISA" rev
> 0x02
> pciide0 at pci0 dev 4 function 1 "Intel 82371AB IDE" rev
> 0x01: DMA, channel 0 wired to compatibility, channel 1 wired
> to compatibility
> wd0 at pciide0 channel 0 drive 0: <FUJITSU MPE3102AT>
> wd0: 16-sector PIO, LBA, 9773MB, 16383 cyl, 16 head, 63 sec,
> 20016348 sectors
> atapiscsi0 at pciide0 channel 0 drive 1
> scsibus0 at atapiscsi0: 2 targets
> cd0 at scsibus0 targ 0 lun 0: <ASUS, CD-S500/A, 1.3D> SCSI0
> 5/cdrom removable
> wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
> cd0(pciide0:0:1): using PIO mode 4
> atapiscsi1 at pciide0 channel 1 drive 0
> scsibus1 at atapiscsi1: 2 targets
> cd1 at scsibus1 targ 0 lun 0: <YAMAHA, CRW8824E, 1.00> SCSI0
> 5/cdrom removable
> cd1(pciide0:1:0): using PIO mode 4, DMA mode 2
> uhci0 at pci0 dev 4 function 2 "Intel 82371AB USB" rev 0x01:
> irq 9
> usb0 at uhci0: USB revision 1.0
> uhub0 at usb0
> uhub0: vendor 0x0000 UHCI root hub, class 9/0, rev
> 1.00/1.00, addr 1
> uhub0: 2 ports with 2 removable, self powered
> "Intel 82371AB Power Mgmt" rev 0x02 at pci0 dev 4 function 3
> not configured
> dc0 at pci0 dev 9 function 0 "DEC 21142/3" rev 0x41: irq 9
> address 00:c0:ca:33:f7:b6
> dcphy0 at dc0 phy 31: internal PHY
> fxp0 at pci0 dev 10 function 0 "Intel 82557" rev 0x08: irq
> 5, address 00:d0:b7:21:be:cc
> inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
> fxp1 at pci0 dev 11 function 0 "Intel 82557" rev 0x08: irq
> 10, address 00:d0:b7:25:f4:83
> inphy1 at fxp1 phy 1: i82555 10/100 media interface, rev. 4
> vga1 at pci0 dev 12 function 0 "S3 ViRGE DX/GX" rev 0x01
> wsdisplay0 at vga1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> isa0 at pcib0
> isadma0 at isa0
> pckbc0 at isa0 port 0x60/5
> pckbd0 at pckbc0 (kbd slot)
> pckbc0: using irq 1 for kbd slot
> wskbd0 at pckbd0: console keyboard, using wsdisplay0
> pmsi0 at pckbc0 (aux slot)
> pckbc0: using irq 12 for aux slot
> wsmouse0 at pmsi0 mux 0
> pcppi0 at isa0 port 0x61
> midi0 at pcppi0: <PC speaker>
> sysbeep0 at pcppi0
> lpt0 at isa0 port 0x378/4 irq 7
> npx0 at isa0 port 0xf0/16: using exception 16
> pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
> biomask c240 netmask c660 ttymask d6e2
> pctr: 686-class user-level performance counters enabled
> mtrr: Pentium Pro MTRR support
> dkcsum: wd0 matched BIOS disk 80
> root on wd0a
> rootdev=0x0 rrootdev=0x300 rawdev=0x302
>
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33224
> inet6 fe80::1%lo0 prefixlen 64 scopeid 0x6
> inet6 ::1 prefixlen 128
> inet 127.0.0.1 netmask 0xff000000
> lo1: flags=8008<LOOPBACK,MULTICAST> mtu 33224
> dc0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
> media: Ethernet 10baseT full-duplex (autoselect)
> status: no carrier
> inet 10.1.1.1 netmask 0xffffff00 broadcast
> 10.1.1.255
> inet6 fe80::2c0:caff:fe33:f7b6%dc0 prefixlen 64
> scopeid 0x1
> fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu
> 1500
> media: Ethernet autoselect (10baseT)
> status: active
> inet 192.168.1.1 netmask 0xffffff00 broadcast
> 192.168.1.255
> inet6 fe80::2d0:b7ff:fe21:becc%fxp0 prefixlen 64
> scopeid 0x2
> fxp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu
> 1500
> media: Ethernet autoselect (100baseTX full-duplex)
> status: active
> inet6 fe80::2d0:b7ff:fe25:f483%fxp1 prefixlen 64
> scopeid 0x3
> inet 213.22.138.189 netmask 0xfffffe00 broadcast
> 213.22.139.255
> pflog0: flags=141<UP,RUNNING,PROMISC> mtu 33224
> sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 296
> sl1: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 296
> ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
> ppp1: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
> tun0: flags=10<POINTOPOINT> mtu 3000
> tun1: flags=10<POINTOPOINT> mtu 3000
> enc0: flags=0<> mtu 1536
> bridge0: flags=0<> mtu 1500
> bridge1: flags=0<> mtu 1500
> vlan0: flags=0<> mtu 1500
> vlan1: flags=0<> mtu 1500
> gre0: flags=8010<POINTOPOINT,MULTICAST> mtu 1450
> gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
> gif1: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
> gif2: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
> gif3: flags=8010<POINTOPOINT,MULTICAST> mtu 1280

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