kern/104406: [ufs] Processes get stuck in "ufs" state under persistent CPU load

Oleg Derevenetz oleg at vsi.ru
Wed Mar 7 02:50:07 UTC 2007 

The following reply was made to PR kern/104406; it has been noted by GNATS.

From: "Oleg Derevenetz" <oleg at vsi.ru>
To: <bug-followup at FreeBSD.org>
Cc:  
Subject: Re: kern/104406: [ufs] Processes get stuck in "ufs" state under persistent CPU load
Date: Wed, 7 Mar 2007 05:10:59 +0300

 I have the problem with the same symptoms on SMP FreeBSD 6.2-STABLE with 
 dual AMD Opteron(tm) Processor 850. Sometimes (apparently when CPU load 
 suddenly goes up) all processes that interacts with disk gets stuck in "ufs" 
 state, but in my case SIGSTOP/SIGCONT seemingly does not help.
 
 uname -a output:
 
 FreeBSD serv2.vsi.ru 6.2-STABLE FreeBSD 6.2-STABLE #2: Sat Mar  3 01:59:08 
 MSK 2007     oleg at serv2.vsi.ru:/usr/obj/usr/src/sys/serv2  i386
 
 dmesg.boot:
 
 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 #2: Sat Mar  3 01:59:08 MSK 2007
     oleg at serv2.vsi.ru:/usr/obj/usr/src/sys/serv2
 Timecounter "i8254" frequency 1193182 Hz quality 0
 CPU: AMD Opteron(tm) Processor 850 (2389.26-MHz 686-class CPU)
   Origin = "AuthenticAMD"  Id = 0x20f51  Stepping = 1
   Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
   Features2=0x1<SSE3>
   AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow+,3DNow>
   AMD Features2=0x1<LAHF>
 real memory  = 8589934592 (8192 MB)
 avail memory = 8350457856 (7963 MB)
 ACPI APIC Table: <PTLTD          APIC  >
 FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
  cpu0 (BSP): APIC ID:  0
  cpu1 (AP): APIC ID:  1
 MADT: Forcing active-low polarity and level trigger for SCI
 ioapic0 <Version 1.1> irqs 0-23 on motherboard
 ioapic1 <Version 1.1> irqs 24-27 on motherboard
 ioapic2 <Version 1.1> irqs 28-31 on motherboard
 ioapic3 <Version 1.1> irqs 32-35 on motherboard
 ioapic4 <Version 1.1> irqs 36-39 on motherboard
 ioapic5 <Version 1.1> irqs 40-43 on motherboard
 ioapic6 <Version 1.1> irqs 44-47 on motherboard
 kbd1 at kbdmux0
 acpi0: <PTLTD    XSDT> on motherboard
 acpi0: Power Button (fixed)
 unknown: I/O range not supported
 unknown: I/O range not supported
 Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
 acpi_timer0: <24-bit timer at 3.579545MHz> port 0xf008-0xf00b on acpi0
 cpu0: <ACPI CPU> on acpi0
 cpu1: <ACPI CPU> on acpi0
 acpi_button0: <Power Button> on acpi0
 pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff,0xf000-0xf07f,0xf080-0xf0ff 
 iomem 0xd8000-0xdbfff on acpi0
 pci0: <ACPI PCI bus> on pcib0
 pcib1: <ACPI PCI-PCI bridge> at device 6.0 on pci0
 pci1: <ACPI PCI bus> on pcib1
 ohci0: <OHCI (generic) USB controller> mem 0xfc900000-0xfc900fff irq 19 at 
 device 0.0 on pci1
 ohci0: [GIANT-LOCKED]
 usb0: OHCI version 1.0, legacy support
 usb0: SMM does not respond, resetting
 usb0: <OHCI (generic) USB controller> on ohci0
 usb0: USB revision 1.0
 uhub0: AMD OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
 uhub0: 3 ports with 3 removable, self powered
 ohci1: <OHCI (generic) USB controller> mem 0xfc901000-0xfc901fff irq 19 at 
 device 0.1 on pci1
 ohci1: [GIANT-LOCKED]
 usb1: OHCI version 1.0, legacy support
 usb1: SMM does not respond, resetting
 usb1: <OHCI (generic) USB controller> on ohci1
 usb1: USB revision 1.0
 uhub1: AMD OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
 uhub1: 3 ports with 3 removable, self powered
 pci1: <display, VGA> at device 5.0 (no driver attached)
 isab0: <PCI-ISA bridge> at device 7.0 on pci0
 isa0: <ISA bus> on isab0
 atapci0: <AMD 8111 UDMA133 controller> port 
 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x1000-0x100f at device 7.1 on pci0
 ata0: <ATA channel 0> on atapci0
 ata1: <ATA channel 1> on atapci0
 pci0: <bridge> at device 7.3 (no driver attached)
 pcib2: <ACPI PCI-PCI bridge> at device 10.0 on pci0
 pci2: <ACPI PCI bus> on pcib2
 bge0: <Broadcom BCM5704 A3, ASIC rev. 0x2003> mem 
 0xfe010000-0xfe01ffff,0xfe000000-0xfe00ffff irq 25 at device 2.0 on pci2
 miibus0: <MII bus> on bge0
 brgphy0: <BCM5704 10/100/1000baseTX PHY> on miibus0
 brgphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, 
 1000baseTX-FDX, auto
 bge0: Ethernet address: 00:09:3d:13:fd:00
 bge1: <Broadcom BCM5704 A3, ASIC rev. 0x2003> mem 
 0xfe030000-0xfe03ffff,0xfe020000-0xfe02ffff irq 26 at device 2.1 on pci2
 miibus1: <MII bus> on bge1
 brgphy1: <BCM5704 10/100/1000baseTX PHY> on miibus1
 brgphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, 
 1000baseTX-FDX, auto
 bge1: Ethernet address: 00:09:3d:13:fd:01
 mpt0: <LSILogic 1030 Ultra4 Adapter> port 0x2000-0x20ff mem 
 0xfe050000-0xfe05ffff,0xfe040000-0xfe04ffff irq 27 at device 4.0 on pci2
 mpt0: [GIANT-LOCKED]
 mpt0: MPI Version=1.2.15.0
 mpt0: Capabilities: ( RAID-1E RAID-1 SAFTE )
 mpt0: 0 Active Volumes (1 Max)
 mpt0: 0 Hidden Drive Members (6 Max)
 pci0: <base peripheral, interrupt controller> at device 10.1 (no driver 
 attached)
 pcib3: <ACPI PCI-PCI bridge> at device 11.0 on pci0
 pci3: <ACPI PCI bus> on pcib3
 pci0: <base peripheral, interrupt controller> at device 11.1 (no driver 
 attached)
 pcib4: <ACPI Host-PCI bridge> iomem 
 0xfe301000-0xfe301fff,0xfe303000-0xfe303fff,0xfe305000-0xfe305fff,0xfe307000-0xfe307fff 
 on acpi0
 pci32: <ACPI PCI bus> on pcib4
 pcib5: <ACPI PCI-PCI bridge> mem 0xfe300000-0xfe300fff irq 32 at device 1.0 
 on pci32
 pci33: <ACPI PCI bus> on pcib5
 pci32: <base peripheral, interrupt controller> at device 1.1 (no driver 
 attached)
 pcib6: <ACPI PCI-PCI bridge> mem 0xfe302000-0xfe302fff irq 36 at device 2.0 
 on pci32
 pci34: <ACPI PCI bus> on pcib6
 pci32: <base peripheral, interrupt controller> at device 2.1 (no driver 
 attached)
 pcib7: <ACPI PCI-PCI bridge> mem 0xfe304000-0xfe304fff irq 40 at device 3.0 
 on pci32
 pci35: <ACPI PCI bus> on pcib7
 pci32: <base peripheral, interrupt controller> at device 3.1 (no driver 
 attached)
 pcib8: <ACPI PCI-PCI bridge> mem 0xfe306000-0xfe306fff irq 44 at device 4.0 
 on pci32
 pci36: <ACPI PCI bus> on pcib8
 pci32: <base peripheral, interrupt controller> at device 4.1 (no driver 
 attached)
 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
 fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
 fdc0: [FAST]
 fd0: <1440-KB 3.5" drive> on fdc0 drive 0
 pmtimer0 on isa0
 orm0: <ISA Option ROMs> at iomem 
 0xc0000-0xc7fff,0xc8000-0xc97ff,0xc9800-0xcafff,0xcb000-0xcefff on isa0
 ppc0: parallel port not found.
 sc0: <System console> at flags 0x100 on isa0
 sc0: VGA <16 virtual consoles, flags=0x300>
 sio1 at port 0x2f8-0x2ff irq 3 on isa0
 sio1: type 16550A
 vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
 Timecounters tick every 1.000 msec
 IP Filter: v4.1.13 initialized.  Default = block all, Logging = enabled
 Waiting 5 seconds for SCSI devices to settle
 acd0: DMA limited to UDMA33, controller found non-ATA66 cable
 acd0: DVDROM <MATSHITADVD-ROM SR-8178/PZ21> at ata1-master UDMA33
 ses0 at mpt0 bus 0 target 6 lun 0
 ses0: <SDR GEM318P 1> Fixed Processor SCSI-2 device
 ses0: 3.300MB/s transfers
 ses0: SAF-TE Compliant Device
 SMP: AP CPU #1 Launched!
 da0 at mpt0 bus 0 target 0 lun 0
 da0: <SEAGATE ST373207LC 0003> Fixed Direct Access SCSI-3 device
 da0: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged Queueing 
 Enabled
 da0: 70007MB (143374744 512 byte sectors: 255H 63S/T 8924C)
 da1 at mpt0 bus 0 target 2 lun 0
 da1: <SEAGATE ST336807LC 0C01> Fixed Direct Access SCSI-3 device
 da1: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged Queueing 
 Enabled
 da1: 35003MB (71687372 512 byte sectors: 255H 63S/T 4462C)
 Trying to mount root from ufs:/dev/da0s1a
 Accounting enabled
 
 Any ideas on how to debug this ?
 
 --
 Oleg Derevenetz <oleg at vsi.ru> OOD3-RIPE
 Phone: +7 4732 539880
 Fax:   +7 4732 531415         http://www.vsi.ru
 CenterTelecom Voronezh ISP    http://isp.vsi.ru

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