Dual AMD MP unstable under heavy load when smp is active

Wed Mar 5 03:14:46 UTC 2008

Danny,

I don't know what the bug is, but it does exist.

I have an IBM x3455 with 2 Opteron dual core processors.  Under heavy loads 
it crashes.  As a step in debugging, I unplugged one of the processors, and 
the problem went away.  I switched to Centos version 4, and it operates 
perfectly.

In addition to FreeBSD,  the problem also exists in Fedora Core.

Of the OSes I tested, only Redhat and Centos worked correctly on the x3455.

I didn't try Windows, so I can't say whether or not it operates properly on 
this system.

Unfortunately, that is all I know about the issue.

Paul Missman

----- Original Message ----- 
From: "Danny Fullerton" <northox at mantor.org>
To: <freebsd-smp at freebsd.org>
Sent: Tuesday, March 04, 2008 9:05 PM
Subject: Dual AMD MP unstable under heavy load when smp is active

> Hi guys,
>
> I been having quite some trouble finding a problem whom seem to be
> related with SMP on one of my production server.
>
> The problem is not easily reproducible but the best way I found was to
> fire up "make buildworld" while having some other things going on
> (mysql, apache, bind, jails, etc). When SMP is active, the compile will
> end up with a segfault or, quite rarely, end up with a crash. I recently
> configure the crash device but still was unable to recreate a full
> system crash.
>
> At first, I thought it was related to the memory so I done some test and
> changed most DIMM but ultimately, the problem was sill there. To pin
> point the problem, I first tried to add options to the GENERIC kernel
> witch I found to be stable. That's how I found that it was related to
> SMP. I then tried mixing some other thing like reducing the driver in
> the kernel to the minimum I could for different reason. One of them is
> that the motherboard is a "Tyan thunder K7X"
> (http://www.tyan.com/archive/products/html/thunderk7x.html) and it has
> an onbord adaptec SCSI controller which I don't use. Since the driver
> used for this adapter is not MP safe, I tried disabling it via the BIOS
> and/or by disabling the driver in the kernel but it had no effect. The
> actual SCSI adapter in used is the Dell 4/DC (LSILogic MegaRAID) you can
> see in the dmesg.
>
> Now I have no clue on how I could further debug this problem.
>
> dmesg from generic kernel:
>
> Copyright (c) 1992-2008 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 6.3-RELEASE-p1 #0: Wed Feb 27 07:56:51 EST 2008
>    root at megatron.mantor.org:/usr/obj/usr/src/sys/GENERIC
> ACPI APIC Table: <PTLTD          APIC  >
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: AMD Athlon(tm) MP 2200+ (1800.07-MHz 686-class CPU)
>  Origin = "AuthenticAMD"  Id = 0x680  Stepping = 0
>
> Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
>  AMD Features=0xc0480800<SYSCALL,MP,MMX+,3DNow!+,3DNow!>
> real memory  = 3220701184 (3071 MB)
> avail memory = 3150741504 (3004 MB)
> MADT: Forcing active-low polarity and level trigger for SCI
> 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)
> hptrr: HPT RocketRAID controller driver v1.1 (Feb 27 2008 07:56:28)
> acpi0: <PTLTD   RSDT> on motherboard
> acpi0: Power Button (fixed)
> acpi0: Sleep Button (fixed)
> Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
> acpi_timer0: <24-bit timer at 3.579545MHz> port 0x8008-0x800b on acpi0
> cpu0: <ACPI CPU> on acpi0
> acpi_button0: <Power Button> on acpi0
> pcib0: <ACPI Host-PCI bridge> port
> 0xcf8-0xcff,0x8000-0x807f,0x8080-0x80ff iomem 0xd8000-0xdbfff on acpi0
> pci0: <ACPI PCI bus> on pcib0
> agp0: <AMD 762 host to AGP bridge> port 0x1810-0x1813 mem
> 0xf8000000-0xfbffffff,0xf6210000-0xf6210fff at device 0.0 on pci0
> pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
> pci1: <ACPI PCI bus> on pcib1
> isab0: <PCI-ISA bridge> at device 7.0 on pci0
> isa0: <ISA bus> on isab0
> atapci0: <AMD 768 UDMA100 controller> port
> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f 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)
> amr0: <LSILogic MegaRAID 1.53> mem 0xf6200000-0xf620ffff irq 20 at
> device 8.0 on pci0
> amr0: delete logical drives supported by controller
> amr0: <LSILogic PERC 4/DC> Firmware 350O, BIOS 1.09, 128MB RAM
> ahc0: <Adaptec aic7899 Ultra160 SCSI adapter> port 0x1000-0x10ff mem
> 0xf4000000-0xf4000fff irq 20 at device 10.0 on pci0
> ahc0: [GIANT-LOCKED]
> aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
> ahc1: <Adaptec aic7899 Ultra160 SCSI adapter> port 0x1400-0x14ff mem
> 0xf4001000-0xf4001fff irq 21 at device 10.1 on pci0
> ahc1: [GIANT-LOCKED]
> aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs
> pcib2: <ACPI PCI-PCI bridge> at device 16.0 on pci0
> pci2: <ACPI PCI bus> on pcib2
> ohci0: <OHCI (generic) USB controller> mem 0xf4100000-0xf4100fff irq 19
> at device 0.0 on pci2
> 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: 4 ports with 4 removable, self powered
> pci2: <display, VGA> at device 7.0 (no driver attached)
> xl0: <3Com 3c980C Fast Etherlink XL> port 0x2400-0x247f mem
> 0xf4102000-0xf410207f irq 18 at device 8.0 on pci2
> miibus0: <MII bus> on xl0
> ukphy0: <Generic IEEE 802.3u media interface> on miibus0
> ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> xl0: Ethernet address: 00:e0:81:22:2e:c4
> xl1: <3Com 3c980C Fast Etherlink XL> port 0x2480-0x24ff mem
> 0xf4102400-0xf410247f irq 19 at device 9.0 on pci2
> miibus1: <MII bus> on xl1
> ukphy1: <Generic IEEE 802.3u media interface> on miibus1
> ukphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> xl1: Ethernet address: 00:e0:81:22:2e:c5
> atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
> atkbd0: <AT Keyboard> irq 1 on atkbdc0
> kbd0 at atkbd0
> atkbd0: [GIANT-LOCKED]
> fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on 
> acpi0
> fdc0: does not respond
> device_attach: fdc0 attach returned 6
> fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on 
> acpi0
> fdc0: does not respond
> device_attach: fdc0 attach returned 6
> pmtimer0 on isa0
> orm0: <ISA Option ROMs> at iomem
> 0xc0000-0xc7fff,0xc8000-0xc87ff,0xc8800-0xc8fff,0xe0000-0xe3fff on isa0
> ppc0: parallel port not found.
> sc0: <System console> at flags 0x100 on isa0
> sc0: VGA <16 virtual consoles, flags=0x300>
> sio0: configured irq 4 not in bitmap of probed irqs 0
> sio0: port may not be enabled
> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
> sio0: type 8250 or not responding
> sio1: configured irq 3 not in bitmap of probed irqs 0
> sio1: port may not be enabled
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> Timecounter "TSC" frequency 1800073530 Hz quality 800
> Timecounters tick every 1.000 msec
> hptrr: no controller detected.
> Waiting 5 seconds for SCSI devices to settle
> ad0: 476940MB <WDC WD5000AAKB-00UKA0 07.01N01> at ata0-master UDMA100
> amr0: delete logical drives supported by controller
> amrd0: <LSILogic MegaRAID logical drive> on amr0
> amrd0: 139900MB (286515200 sectors) RAID 1 (optimal)
> Trying to mount root from ufs:/dev/amrd0s1a
>
> kldstat:
>
> Id Refs Address    Size     Name
> 1   10 0xc0400000 7a05b0   kernel
> 2    1 0xc0ba1000 5c304    acpi.ko
> 3    1 0xc8093000 3000     fdescfs.ko
> 4    1 0xc8106000 3000     pflog.ko
> 5    1 0xc8109000 2d000    pf.ko
> 6    1 0xc817b000 19000    linux.ko
>
> If you have any idea or you need more information to diagnosis the
> problem please let me known.
>
> regards,
>
> ---
> Danny Fullerton
> Mantor Organization
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>
> -- 
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> 8:35 AM
>
> 