Date: Sat, 31 Jul 1999 11:13:19 -0400 From: tcobb@staff.circle.net To: blapp@attic.ch, freebsd-current@freebsd.org Cc: freebsd-smp@freebsd.org Subject: RE: network got stuck during high nfs-load Message-ID: <A0CFA284C004D211B7EE0060082F32A41F2830@freya.circle.net>
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I'm now getting a similar thing with the latest -STABLE build. NFS isn't involved, but this is on a heavily used webserver. NIC is a 3COM 3C905b. Ifconfig up and down works for about 5 packets, that's it. netstat was showing either errors inbound, or absolutely nothing. This happens about once per day now, on this machine. I've had to switch back to a UP kernel to avoid this (and another bug about processes getting wedged on a processor). I think this is an SMP problem, so I've included freebsd-smp in the reply. -Troy Cobb Circle Net, Inc. http://www.circle.net > -----Original Message----- > From: Martin Blapp [mailto:blapp@attic.ch] > Sent: Saturday, July 31, 1999 9:57 AM > To: freebsd-current@freebsd.org > Subject: network got stuck during high nfs-load > > > > 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 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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