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Date:      Thu, 3 May 2001 06:33:19 -0700 (PDT)
From:      lele@windmill.it
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   kern/27059: (symbios) SCSI subsystem hangs under heavy load on (Serverworks) SMP  
Message-ID:  <200105031333.f43DXJt20972@freefall.freebsd.org>

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>Number:         27059
>Category:       kern
>Synopsis:       (symbios) SCSI subsystem hangs under heavy load on (Serverworks) SMP
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu May 03 06:40:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Lele Forzani
>Release:        FreeBSD 4.3-RELEASE
>Organization:
Intercom s.r.l.
>Environment:
FreeBSD deimos.intercom.it 4.3-RELEASE FreeBSD 4.3-RELEASE #0: Thu May  3 01:44:05 CEST 2001  root@deimos.intercom.it:/usr/src/sys/compile/IBNETWORK-SMP i386
>Description:
When the system is under a heavy disk load the SCSI subsystem becomes completely irresponsive. The network stays up and processes continue to run as long the do not require access to the scsi disks.
Nothing is logged or displayed on the console.
Uniprocessor kernel with the same configuration run stable for weeks.
4.2-R had the same problem.



The mainboard is ASUS CUR-DLS


May  3 01:48:19 deimos /kernel: Copyright (c) 1992-2001 The FreeBSD Project.
May  3 01:48:19 deimos /kernel: Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
May  3 01:48:19 deimos /kernel: The Regents of the University of California. All rights reserved.
May  3 01:48:19 deimos /kernel: FreeBSD 4.3-RELEASE #0: Thu May  3 01:44:05 CEST 2001
May  3 01:48:19 deimos /kernel: root@deimos.intercom.it:/usr/src/sys/compile/IBNETWORK-SMP
May  3 01:48:19 deimos /kernel: Timecounter "i8254"  frequency 1193182 Hz
May  3 01:48:19 deimos /kernel: CPU: Pentium III/Pentium III Xeon/Celeron (800.03-MHz 686-class CPU)
May  3 01:48:19 deimos /kernel: Origin = "GenuineIntel"  Id = 0x686  Stepping = 6
May  3 01:48:19 deimos /kernel: Features=0x387fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,PN,MMX,FXSR,SSE>
May  3 01:48:19 deimos /kernel: real memory  = 536850432 (524268K bytes)
May  3 01:48:19 deimos /kernel: avail memory = 518393856 (506244K bytes)
May  3 01:48:19 deimos /kernel: Programming 16 pins in IOAPIC #0
May  3 01:48:19 deimos /kernel: IOAPIC #0 intpin 2 -> irq 0
May  3 01:48:19 deimos /kernel: Programming 16 pins in IOAPIC #1
May  3 01:48:19 deimos /kernel: FreeBSD/SMP: Multiprocessor motherboard
May  3 01:48:19 deimos /kernel: cpu0 (BSP): apic id:  3, version: 0x00040011, at 0xfee00000
May  3 01:48:19 deimos /kernel: cpu1 (AP):  apic id:  0, version: 0x00040011, at 0xfee00000
May  3 01:48:19 deimos /kernel: io0 (APIC): apic id:  4, version: 0x000f0011, at 0xfec00000
May  3 01:48:19 deimos /kernel: io1 (APIC): apic id:  5, version: 0x000f0011, at 0xfec01000
May  3 01:48:19 deimos /kernel: Preloaded elf kernel "kernel" at 0xc036e000.
May  3 01:48:19 deimos /kernel: Preloaded userconfig_script "/boot/kernel.conf" at 0xc036e09c.
May  3 01:48:19 deimos /kernel: Pentium Pro MTRR support enabled
May  3 01:48:19 deimos /kernel: md0: Malloc disk
May  3 01:48:19 deimos /kernel: npx0: <math processor> on motherboard
May  3 01:48:19 deimos /kernel: npx0: INT 16 interface
May  3 01:48:19 deimos /kernel: pcib0: <ServerWorks NB6635 3.0LE host to PCI bridge> on motherboard
May  3 01:48:19 deimos /kernel: IOAPIC #1 intpin 4 -> irq 2
May  3 01:48:19 deimos /kernel: IOAPIC #1 intpin 14 -> irq 5
May  3 01:48:19 deimos /kernel: pci0: <PCI bus> on pcib0
May  3 01:48:19 deimos /kernel: fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0xd800-0xd83f mem 0xfd800000-0xfd8fffff,0xfe000000-0xfe000fff irq 2 at device 2.0 on pci0
May  3 01:48:19 deimos /kernel: fxp0: Ethernet address 00:e0:18:04:96:d8
May  3 01:48:19 deimos /kernel: pci0: <ATI Mach64-GR graphics accelerator> at 7.0
May  3 01:48:19 deimos /kernel: isab0: <ServerWorks IB6566 PCI to ISA bridge> at device 15.0 on pci0
May  3 01:48:19 deimos /kernel: isa0: <ISA bus> on isab0
May  3 01:48:19 deimos /kernel: atapci0: <ServerWorks ROSB4 ATA33 controller> port 0xd000-0xd00f at device 15.1 on pci0
May  3 01:48:19 deimos /kernel: ata0: at 0x1f0 irq 14 on atapci0
May  3 01:48:19 deimos /kernel: ata1: at 0x170 irq 15 on atapci0
May  3 01:48:19 deimos /kernel: ohci0: <OHCI (generic) USB controller> mem 0xfb000000-0xfb000fff irq 5 at device 15.2 on pci0
May  3 01:48:19 deimos /kernel: usb0: OHCI version 1.0, legacy support
May  3 01:48:19 deimos /kernel: usb0: <OHCI (generic) USB controller> on ohci0
May  3 01:48:19 deimos /kernel: usb0: USB revision 1.0
May  3 01:48:19 deimos /kernel: uhub0: (unknown) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
May  3 01:48:19 deimos /kernel: uhub0: 4 ports with 4 removable, self powered
May  3 01:48:19 deimos /kernel: pcib1: <ServerWorks NB6635 3.0LE host to PCI bridge> on motherboard
May  3 01:48:19 deimos /kernel: IOAPIC #1 intpin 8 -> irq 6
May  3 01:48:19 deimos /kernel: IOAPIC #1 intpin 9 -> irq 10
May  3 01:48:19 deimos /kernel: pci1: <PCI bus> on pcib1
May  3 01:48:19 deimos /kernel: sym0: <896> port 0xb800-0xb8ff mem 0xfa000000-0xfa001fff,0xfa800000-0xfa8003ff irq 6 at device 5.0 on pci1
May  3 01:48:19 deimos /kernel: sym0: Symbios NVRAM, ID 7, Fast-40, SE, parity checking
May  3 01:48:19 deimos /kernel: sym0: open drain IRQ line driver, using on-chip SRAM
May  3 01:48:19 deimos /kernel: sym0: using LOAD/STORE-based firmware.
May  3 01:48:19 deimos /kernel: sym0: handling phase mismatch from SCRIPTS.
May  3 01:48:19 deimos /kernel: sym0: SCAN AT BOOT disabled for targets 1 2 3 4 5 6 8 9 10 11 12 13 14 15.
May  3 01:48:19 deimos /kernel: sym1: <896> port 0xb400-0xb4ff mem 0xf9000000-0xf9001fff,0xf9800000-0xf98003ff irq 10 at device 5.1 on pci1
May  3 01:48:19 deimos /kernel: sym1: Symbios NVRAM, ID 7, Fast-40, LVD, parity checking
May  3 01:48:19 deimos /kernel: sym1: open drain IRQ line driver, using on-chip SRAM
May  3 01:48:19 deimos /kernel: sym1: using LOAD/STORE-based firmware.
May  3 01:48:19 deimos /kernel: sym1: handling phase mismatch from SCRIPTS.
May  3 01:48:19 deimos /kernel: sym1: SCAN AT BOOT disabled for targets 0 1 2 3 4 6 8 9 10 11 12 13 14 15.
May  3 01:48:19 deimos /kernel: fdc0: cannot reserve interrupt line
May  3 01:48:19 deimos /kernel: atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
May  3 01:48:19 deimos /kernel: atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
May  3 01:48:19 deimos /kernel: kbd0 at atkbd0
May  3 01:48:19 deimos /kernel: psm0: <PS/2 Mouse> irq 12 on atkbdc0
May  3 01:48:19 deimos /kernel: psm0: model Generic PS/2 mouse, device ID 0
May  3 01:48:19 deimos /kernel: vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
May  3 01:48:19 deimos /kernel: sc0: <System console> at flags 0x100 on isa0
May  3 01:48:19 deimos /kernel: sc0: VGA <16 virtual consoles, flags=0x300>
May  3 01:48:19 deimos /kernel: sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
May  3 01:48:19 deimos /kernel: sio0: type 16550A
May  3 01:48:19 deimos /kernel: sio1 at port 0x2f8-0x2ff irq 3 on isa0
May  3 01:48:19 deimos /kernel: sio1: type 16550A
May  3 01:48:19 deimos /kernel: ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
May  3 01:48:19 deimos /kernel: ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
May  3 01:48:19 deimos /kernel: ppc0: FIFO with 16/16/8 bytes threshold
May  3 01:48:19 deimos /kernel: lpt0: <Printer> on ppbus0
May  3 01:48:19 deimos /kernel: lpt0: Interrupt-driven port
May  3 01:48:19 deimos /kernel: ppi0: <Parallel I/O> on ppbus0
May  3 01:48:19 deimos /kernel: APIC_IO: Testing 8254 interrupt delivery
May  3 01:48:19 deimos /kernel: APIC_IO: Broken MP table detected: 8254 is not connected to IOAPIC #0 intpin 2
May  3 01:48:19 deimos /kernel: APIC_IO: routing 8254 via 8259 and IOAPIC #0 intpin 0
May  3 01:48:19 deimos /kernel: SMP: AP CPU #1 Launched!
May  3 01:48:19 deimos /kernel: ad0: 43979MB <IBM-DTLA-307045> [89355/16/63] at ata0-master UDMA33
May  3 01:48:19 deimos /kernel: acd0: CDROM <MATSHITA CR-586> at ata1-master using PIO4
May  3 01:48:19 deimos /kernel: Waiting 15 seconds for SCSI devices to settle
May  3 01:48:19 deimos /kernel: (noperiph:sym0:0:-1:-1): SCSI BUS reset delivered.
May  3 01:48:19 deimos /kernel: (noperiph:sym1:0:-1:-1): SCSI BUS reset delivered.
May  3 01:48:19 deimos /kernel: sa0 at sym1 bus 0 target 5 lun 0
May  3 01:48:19 deimos /kernel: sa0: <OnStream ADR50 Drive 2.33> Removable Sequential Access SCSI-2 device
May  3 01:48:19 deimos /kernel: sa0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
May  3 01:48:19 deimos /kernel: da0 at sym0 bus 0 target 0 lun 0
May  3 01:48:19 deimos /kernel: da0: <ACS 8600  > Fixed Direct Access SCSI-2 device
May  3 01:48:19 deimos /kernel: da0: 40.000MB/s transfers (20.000MHz, offset 16, 16bit), Tagged Queueing Enabled
May  3 01:48:19 deimos /kernel: da0: 156320MB (320143360 512 byte sectors: 255H 63S/T 19928C)
May  3 01:48:19 deimos /kernel: Mounting root from ufs:/dev/da0s1a
>How-To-Repeat:
Just cp or tar of a large amount of data from the scsi disks, usually hangs in few minutes. Reading from the scsi disk is enough (it's not necessary to write)
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:

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