On 31/10/2007, Jack Vogel wrote:
> This morning I had an idea about what the source of the watchdog
> problem is. Also, we have repro'd at least one type of watchdog
> inhouse.
> One question, is this problem only happening for those running
> STABLE with the 6.6.6 merged driver?

This doesn't happen for me on my local testing network with RELENG_6
built from October 14 sources.

These boxes generally throw about 350mbit in/out of TCP between each other.
I've recently upgraded one to RELENG_7 to test so I can't provide a
dmesg+interrupt count for it. Note that under load the interrupts are
around 8000/sec for em0 but I haven't run the tests for a few days and
thus the "rate" figure for em0 is a bit misleading.

wendy# vmstat -i
interrupt total rate
irq1: atkbd0 76 0
irq6: fdc0 1 0
irq15: ata1 46 0
irq17: em0 fwohci0 1503419876 1866
irq19: atapci1 766603 0
irq20: ohci0 ohci+ 0 0
cpu0: timer 1611280255 2000
Total 3115466857 3867

pciconf for the ethernet card:

em0@pci1:6:0: class=0x020000 card=0x13768086 chip=0x107c8086 rev=0x05 hdr=0x00
vendor = 'Intel Corporation'
device = 'PRO/1000 GT'
class = network
subclass = ethernet

Copyright (c) 1992-2007 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
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FreeBSD 6.2-STABLE #6: Sun Oct 14 23:51:09 WST 2007
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Opteron(tm) Processor 140 (1400.01-MHz 686-class CPU)
Origin = "AuthenticAMD" Id = 0xf58 Stepping = 8
AMD Features=0xe0500800
real memory = 2147221504 (2047 MB)
avail memory = 2096099328 (1998 MB)
ioapic0 irqs 0-23 on motherboard
kbd1 at kbdmux0
ath_hal: (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
cpu0: on acpi0
pcib0: port 0xcf8-0xcff on acpi0
pci0: on pcib0
agp0: mem 0xf0000000-0xf7ffffff at
device 0.0 on pci0
isab0: at device 1.0 on pci0
isa0: on isab0
pci0: at device 1.1 (no driver attached)
ohci0: mem 0xfebfd000-0xfebfdfff irq
20 at device 2.0 on pci0
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: on ohci0
usb0: USB revision 1.0
uhub0: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1: mem 0xfebfe000-0xfebfefff irq
20 at device 2.1 on pci0
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: on ohci1
usb1: USB revision 1.0
uhub1: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
ehci0: mem 0xfebffc00-0xfebffcff
irq 20 at device 2.2 on pci0
usb2: EHCI version 1.0
usb2: companion controllers, 4 ports each: usb0 usb1
usb2: on ehci0
usb2: USB revision 2.0
uhub2: nVidia EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: 6 ports with 6 removable, self powered
nve0: port 0xec00-0xec07 mem
0xfebfc000-0xfebfcfff irq 21 at device 5.0 on pci0
nve0: Ethernet address 00:0c:6e:98:55:5c
miibus0: on nve0
rlphy0: on miibus0
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
nve0: Ethernet address: 00:0c:6e:98:55:5c
pci0: at device 6.0 (no driver attached)
atapci0: port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 8.0 on
ata0: on atapci0
ata1: on atapci0
pcib1: at device 10.0 on pci0
pci1: on pcib1
em0: port
0xdc00-0xdc3f mem 0xfc9e0000-0xfc9fffff,0xfc9c0000-0xfc9dffff irq 17
at device 6.0 on pci1
em0: Ethernet address: 00:0e:0c:b9:42:d8
atapci1: port
0xd800-0xd83f,0xd400-0xd40f,0xd000-0xd07f mem
0xfc99f000-0xfc99ffff,0xfc960000-0xfc97ffff irq 19 at device 8.0 on
ata2: on atapci1
ata3: on atapci1
ata4: on atapci1
fwohci0: mem
0xfc99e800-0xfc99efff,0xfc998000-0xfc99bfff irq 17 at device 9.0 on
fwohci0: OHCI version 1.10 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:e0:18:00:00:2e:05:96
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: on fwohci0
fwe0: on firewire0
if_fwe0: Fake Ethernet address: 02:e0:18:2e:05:96
fwe0: Ethernet address: 02:e0:18:2e:05:96
fwe0: if_start running deferred for Giant
sbp0: on firewire0
fwohci0: Initiate bus reset
fwohci0: BUS reset
fwohci0: node_id=0xc000ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
pcib2: at device 11.0 on pci0
pci2: on pcib2
pci2: at device 0.0 (no driver attached)
acpi_button0: on acpi0
fdc0: port 0x3f0-0x3f5,0x3f7 irq 6 drq
2 on acpi0
fdc0: [FAST]
atkbdc0: port 0x60,0x64 irq 1 on acpi0
atkbd0: irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
pmtimer0 on isa0
orm0: at iomem 0xc0000-0xcffff,0xd0000-0xd0fff on isa0
ppc0: parallel port not found.
sc0: at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 1400008080 Hz quality 800
Timecounters tick every 1.000 msec
ipfw2 (+ipv6) initialized, divert loadable, rule-based forwarding
enabled, default to accept, logging disabled
acd0: CDRW at ata1-master PIO4
ad4: 76319MB at ata2-master SATA150
hwpmc: TSC/1/0x20 K8/4/0x1ff
Trying to mount root from ufs:/dev/ad4s1a


Adrian Chadd -
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