Re: em watchdog problem

On 31/10/2007, Jack Vogel <jfvogel@xxxxxxxxx> 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

Dmesg:
Copyright (c) 1992-2007 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 6.2-STABLE #6: Sun Oct 14 23:51:09 WST 2007
adrian@xxxxxxxxxxxxxxxxxxxxxxx:/usr/obj/usr/src/sys/WENDY
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
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!>
real memory = 2147221504 (2047 MB)
avail memory = 2096099328 (1998 MB)
ACPI APIC Table: <A M I OEMAPIC >
ioapic0 <Version 1.1> irqs 0-23 on motherboard
kbd1 at kbdmux0
ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
acpi0: <A M I OEMRSDT> 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: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <NVIDIA nForce3 AGP Controller> mem 0xf0000000-0xf7ffffff at
device 0.0 on pci0
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
pci0: <serial bus, SMBus> at device 1.1 (no driver attached)
ohci0: <nVidia nForce3 USB Controller> mem 0xfebfd000-0xfebfdfff irq
20 at device 2.0 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <nVidia nForce3 USB Controller> 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: <nVidia nForce3 USB Controller> mem 0xfebfe000-0xfebfefff irq
20 at device 2.1 on pci0
ohci1: [GIANT-LOCKED]
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: <nVidia nForce3 USB Controller> 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: <NVIDIA nForce3 USB 2.0 controller> mem 0xfebffc00-0xfebffcff
irq 20 at device 2.2 on pci0
ehci0: [GIANT-LOCKED]
usb2: EHCI version 1.0
usb2: companion controllers, 4 ports each: usb0 usb1
usb2: <NVIDIA nForce3 USB 2.0 controller> 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: <NVIDIA nForce MCP3 Networking Adapter> port 0xec00-0xec07 mem
0xfebfc000-0xfebfcfff irq 21 at device 5.0 on pci0
nve0: Ethernet address 00:0c:6e:98:55:5c
miibus0: <MII bus> on nve0
rlphy0: <RTL8201L 10/100 media interface> on miibus0
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
nve0: Ethernet address: 00:0c:6e:98:55:5c
pci0: <multimedia, audio> at device 6.0 (no driver attached)
atapci0: <nVidia nForce3 UDMA133 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 8.0 on
pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
pcib1: <ACPI PCI-PCI bridge> at device 10.0 on pci0
pci1: <ACPI PCI bus> on pcib1
em0: <Intel(R) PRO/1000 Network Connection Version - 6.6.6> 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: <Promise PDC20378 SATA150 controller> port
0xd800-0xd83f,0xd400-0xd40f,0xd000-0xd07f mem
0xfc99f000-0xfc99ffff,0xfc960000-0xfc97ffff irq 19 at device 8.0 on
pci1
ata2: <ATA channel 0> on atapci1
ata3: <ATA channel 1> on atapci1
ata4: <ATA channel 2> on atapci1
fwohci0: <Texas Instruments TSB43AB22/A> mem
0xfc99e800-0xfc99efff,0xfc998000-0xfc99bfff irq 17 at device 9.0 on
pci1
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: <IEEE1394(FireWire) bus> on fwohci0
fwe0: <Ethernet over FireWire> 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: <SBP-2/SCSI over FireWire> 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: <ACPI PCI-PCI bridge> at device 11.0 on pci0
pci2: <ACPI PCI bus> on pcib2
pci2: <display, VGA> at device 0.0 (no driver attached)
acpi_button0: <Power Button> on acpi0
fdc0: <floppy drive controller (FDE)> port 0x3f0-0x3f5,0x3f7 irq 6 drq
2 on acpi0
fdc0: [FAST]
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> 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: <ISA Option ROMs> at iomem 0xc0000-0xcffff,0xd0000-0xd0fff on isa0
ppc0: parallel port not found.
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> 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 <MATSHITA CD-RW CW-7586/1A17> at ata1-master PIO4
ad4: 76319MB <WDC WD800JD-00MSA1 10.01E01> at ata2-master SATA150
hwpmc: TSC/1/0x20<REA> K8/4/0x1ff<INT,USR,SYS,EDG,THR,REA,WRI,INV,QUA>
Trying to mount root from ufs:/dev/ad4s1a

HTH,

--
Adrian Chadd - adrian@xxxxxxxxxxx
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