Symon with gigabit em interface

[eric <eric-list-openbsd-misc_(_at_)_catastrophe_(_dot_)_net>]

When working with symon to monitor an em(4) gigabit interface, my statistics
appear incorrect. With little traffic on the interface, the statistics
return more than 1000% than is on the line.

For instance...at about 10Kbps, I'm getting statistics that say there's
1.2Gbps line utilization (I wish!). Has anyone used symon on the em(4) cards
that are gig interfaces?

Thanks.

Here's a dmesg

OpenBSD 3.6 (phoenix) #0: Mon Jan 31 13:05:07 CST 2005
    bob_(_at_)_phoenix_(_dot_)_example_(_dot_)_org:/usr/src/sys/arch/i386/compile/phoenix
cpu0: Intel Pentium III ("GenuineIntel" 686-class, 512KB L2 cache) 548 MHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
real mem  = 133799936 (130664K)
avail mem = 115965952 (113248K)
using 1658 buffers containing 6791168 bytes (6632K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(f5) BIOS, date 07/03/99, BIOS32 rev. 0 @ 0xec700
apm0 at bios0: Power Management spec V1.2 (BIOS managing devices)
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev 2.1 @ 0xec700/0x3900
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xf6f30/176 (9 entries)
pcibios0: PCI Interrupt Router at 000:20:0 ("Intel 82371AB PIIX4 ISA" rev 0x00)
pcibios0: PCI bus #2 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1800 0xcc000/0x1000 0xe0000/0x8000!
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x03
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Rage Pro" rev 0x5c
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
em0 at pci0 dev 15 function 0 "Intel PRO/1000MT (82541EI)" rev 0x00: irq 11, address: 00:0e:0c:69:c9:36
ppb1 at pci0 dev 16 function 0 "DEC 21152 PCI-PCI" rev 0x03
pci2 at ppb1 bus 2
dc0 at pci2 dev 4 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8c
dcphy0 at dc0 phy 31: internal PHY
dc1 at pci2 dev 5 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8d
dcphy1 at dc1 phy 31: internal PHY
dc2 at pci2 dev 6 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8e
dcphy2 at dc2 phy 31: internal PHY
dc3 at pci2 dev 7 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8f
dcphy3 at dc3 phy 31: internal PHY
fxp0 at pci0 dev 18 function 0 "Intel 82557" rev 0x08: irq 11, address 00:d0:b7:47:c1:8f
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
pcib0 at pci0 dev 20 function 0 "Intel 82371AB PIIX4 ISA" rev 0x02
pciide0 at pci0 dev 20 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: <Maxtor 91024U3>
wd0: 16-sector PIO, LBA, 9541MB, 19541088 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <COMPAQ, CRD-8322B, 1.07> SCSI0 5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 20 function 2 "Intel 82371AB USB" rev 0x01: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel 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 20 function 3 not configured
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
sb0 at isa0 port 0x220/24 irq 5 drq 1: dsp v3.01
midi0 at sb0: <SB MIDI UART>
audio0 at sb0
opl0 at sb0: model OPL3
midi1 at opl0: <SB Yamaha OPL3>
pcppi0 at isa0 port 0x61
midi2 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
pccom0: console
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 ff45 netmask ff45 ttymask ffc7
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
syncing disks... done
rebooting...
OpenBSD 3.6 (phoenix) #0: Mon Jan 31 13:05:07 CST 2005
    epancer_(_at_)_phoenix_(_dot_)_sg_(_dot_)_depaul_(_dot_)_edu:/usr/src/sys/arch/i386/compile/phoenix
cpu0: Intel Pentium III ("GenuineIntel" 686-class, 512KB L2 cache) 548 MHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
real mem  = 133799936 (130664K)
avail mem = 115965952 (113248K)
using 1658 buffers containing 6791168 bytes (6632K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(f5) BIOS, date 07/03/99, BIOS32 rev. 0 @ 0xec700
apm0 at bios0: Power Management spec V1.2 (BIOS managing devices)
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev 2.1 @ 0xec700/0x3900
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xf6f30/176 (9 entries)
pcibios0: PCI Interrupt Router at 000:20:0 ("Intel 82371AB PIIX4 ISA" rev 0x00)
pcibios0: PCI bus #2 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1800 0xcc000/0x1000 0xe0000/0x8000!
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x03
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Rage Pro" rev 0x5c
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
em0 at pci0 dev 15 function 0 "Intel PRO/1000MT (82541EI)" rev 0x00: irq 11, address: 00:0e:0c:69:c9:36
ppb1 at pci0 dev 16 function 0 "DEC 21152 PCI-PCI" rev 0x03
pci2 at ppb1 bus 2
dc0 at pci2 dev 4 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8c
dcphy0 at dc0 phy 31: internal PHY
dc1 at pci2 dev 5 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8d
dcphy1 at dc1 phy 31: internal PHY
dc2 at pci2 dev 6 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8e
dcphy2 at dc2 phy 31: internal PHY
dc3 at pci2 dev 7 function 0 "DEC 21142/3" rev 0x41: irq 11, address 00:c0:95:e4:41:8f
dcphy3 at dc3 phy 31: internal PHY
fxp0 at pci0 dev 18 function 0 "Intel 82557" rev 0x08: irq 11, address 00:d0:b7:47:c1:8f
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
pcib0 at pci0 dev 20 function 0 "Intel 82371AB PIIX4 ISA" rev 0x02
pciide0 at pci0 dev 20 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: <Maxtor 91024U3>
wd0: 16-sector PIO, LBA, 9541MB, 19541088 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <COMPAQ, CRD-8322B, 1.07> SCSI0 5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 20 function 2 "Intel 82371AB USB" rev 0x01: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel 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 20 function 3 not configured
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
sb0 at isa0 port 0x220/24 irq 5 drq 1: dsp v3.01
midi0 at sb0: <SB MIDI UART>
audio0 at sb0
opl0 at sb0: model OPL3
midi1 at opl0: <SB Yamaha OPL3>
pcppi0 at isa0 port 0x61
midi2 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
pccom0: console
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 ff45 netmask ff45 ttymask ffc7
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