Date: Sat, 31 Jul 1999 15:57:26 +0200 (CEST) From: Martin Blapp <blapp@attic.ch> To: freebsd-current@freebsd.org Subject: network got stuck during high nfs-load Message-ID: <Pine.BSF.4.02.9907311538470.26785-100000@bastian.attic.ch>
next in thread | raw e-mail | index | archive | help
Hi driver gurus,
Today I had heavy NFS-load on my CURRENT-SMP machine while compiling
world. Suddenly all NFS-Clients stopped working. I was't able to ping
the server from inside my /29 subnet, same with ping the others from
the server itself. I changed cables, plugged them in and out, did some
ifconfig up down, deleted routes and added them again ... nothing. But
the card was still sending from time to time (once a second) with 100%
load many 0 bytes - like some waves:
(tcp-dump from same subnet, MAC Adress 0:a0:cc:66:32:97 is the NFS-Server)
--------------------------------------------------------------------------
13:53:41.673733 0:a0:cc:66:32:97 > 0:a0:cc:66:32:97 null test/C len=43
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 00
13:53:41.773706 0:a0:cc:66:32:97 > 0:a0:cc:66:32:97 null test/C len=43
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 00
It looks like a endless loop somewhere in the de0-driver ...
I was able to ping the machine from itself via loopback and via the local
ip. No stucked processes at all, the running make buildworld was still
running. Also the load was normal, I couldn't see some special behaviour ...
I paniced the server and made a crashdump. If anybody is interested in
this strange behaviour, just write me back ... After a reboot, all worked
again, but that's not a good solution ;)
Martin
PS: cvsup is from yesterday (30.7.1999) at 22:00 CET and I included
a backtrace and a dmesg from my server ...
backtrace from debug.kernel
---------------------------
#0 boot (howto=260) at ../../kern/kern_shutdown.c:291
#1 0xc01538c9 in panic (fmt=0xc0277c14 "from debugger")
at ../../kern/kern_shutdown.c:505
#2 0xc012df19 in db_panic (addr=-1071398025, have_addr=0, count=-1,
modif=0xff80dddc "") at ../../ddb/db_command.c:434
#3 0xc012deb7 in db_command (last_cmdp=0xc02a6f30, cmd_table=0xc02a6d90,
aux_cmd_tablep=0xc02c572c) at ../../ddb/db_command.c:334
#4 0xc012df7e in db_command_loop () at ../../ddb/db_command.c:456
#5 0xc012ffbb in db_trap (type=3, code=0) at ../../ddb/db_trap.c:71
#6 0xc023c0c2 in kdb_trap (type=3, code=0, regs=0xff80ded0)
at ../../i386/i386/db_interface.c:157
#7 0xc02524a0 in trap (frame={tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi
= 0,
tf_esi = -1070741376, tf_ebp = -8331496, tf_isp = -8331524,
tf_ebx = -1070741376, tf_edx = -1070689184, tf_ecx = 16777217,
tf_eax = 38, tf_trapno = 3, tf_err = 0, tf_eip = -1071398025, tf_cs
= 8,
tf_eflags = 582, tf_esp = -1071030749, tf_ss = -1071045718})
at ../../i386/i386/trap.c:534
#8 0xc023c377 in Debugger (msg=0xc02923aa "manual escape to debugger")
at machine/cpufunc.h:64
#9 0xc0236d7c in scgetc (sc=0xc02c3ca0, flags=2)
at ../../dev/syscons/syscons.c:3813
#10 0xc0232529 in sckbdevent (thiskbd=0xc02db0a0, event=0, arg=0xc02c3ca0)
at ../../dev/syscons/syscons.c:688
#11 0xc022bd77 in atkbd_intr (kbd=0xc02db0a0, arg=0x0)
at ../../dev/kbd/atkbd.c:535
#12 0xc02692d7 in atkbd_isa_intr (arg=0xc05a2100) at
../../isa/atkbd_isa.c:125
dmesg-output
------------
Copyright (c) 1992-1999 The FreeBSD Project.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 4.0-CURRENT #1: Fri Jul 30 21:31:06 CEST 1999
root@fuchur.lan.attic.ch:/usr/src/sys/compile/FUCHUR
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium/P55C (586-class CPU)
Origin = "GenuineIntel" Id = 0x543 Stepping = 3
Features=0x8003bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC,MMX>
real memory = 67108864 (65536K bytes)
avail memory = 61652992 (60208K bytes)
Programming 24 pins in IOAPIC #0
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 0, version: 0x00030010, at 0xfee00000
cpu1 (AP): apic id: 1, version: 0x00030010, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000
Preloaded elf kernel "kernel" at 0xc0340000.
Intel Pentium detected, installing workaround for F00F bug
Probing for PnP devices:
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
isab0: <Intel 82371SB PCI to ISA bridge> at device 7.0 on pci0
ide_pci0: <Intel PIIX3 Bus-master IDE controller> at device 7.1 on pci0
de0: <Digital 21140A Fast Ethernet> irq 17 at device 9.0 on pci0
de0: 21140A [10-100Mb/s] pass 2.0
de0: address 00:a0:cc:66:32:97
vga-pci0: <Matrox MGA 1024SG/1064SG/1164SG graphics accelerator> irq 18 at
device 10.0 on pci0
ahc0: <Adaptec aic7880 Ultra SCSI adapter> irq 19 at device 12.0 on pci0
ahc0: Using left over BIOS settings
ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs
isa0: <ISA bus> on motherboard
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
wdc0 at port 0x1f0-0x1f7 irq 14 on isa0
wdc0: unit 0 (atapi): <TOSHIBA CD-ROM XM-6202B/1110>, removable, accel,
ovlap, dma, iordis
wcd0: drive speed 5512KB/sec, 256KB cache
wcd0: supported read types: CD-R, CD-RW, CD-DA
wcd0: Audio: play, 255 volume levels
wcd0: Mechanism: ejectable tray
wcd0: Medium: CD-ROM 120mm data disc loaded, unlocked
wdc0: unit 1 (atapi): <IOMEGA ZIP 100 ATAPI/23.D>, removable, intr,
iordis
wfd0: medium type unknown (no disk)
wfd0: buggy Zip drive, 64-block transfer limit set
atkbdc0: <keyboard controller (i8042)> at port 0x60-0x6f on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
vga0: <Generic ISA VGA> at port 0x3b0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: VGA <16 virtual consoles, flags=0x200>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
ppc0 at port 0x378-0x37f irq 7 flags 0x40 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/16 bytes threshold
ppb0: IEEE1284 device found /NIBBLE
Probing for PnP devices on ppbus0:
ppbus0: <Hewlett-Packard HP LaserJet 5MP> HP ENHANCED PCL5,PJL,POSTSCRIPT
plip0: <PLIP network interface> on ppbus 0
lpt0: <generic printer> on ppbus 0
lpt0: Interrupt-driven port
ppi0: <generic parallel i/o> on ppbus 0
APIC_IO: Testing 8254 interrupt delivery
APIC_IO: routing 8254 via pin 2
IP packet filtering initialized, divert enabled, rule-based forwarding
enabled, default to accept, logging limited to 100 packets/entry
DUMMYNET initialized (990504)
BRIDGE 981214, have 6 interfaces
-- index 1 de0 type 6 phy 0 addrl 6 addr 00.a0.cc.66.32.97
IP Filter: initialized. Default = pass all, Logging = enabled
Waiting 15 seconds for SCSI devices to settle
SMP: AP CPU #1 Launched!
de0: enabling 10baseT port
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.02.9907311538470.26785-100000>