>Number:         37502
>Category:       port-i386
>Synopsis:       GENERIC.MP luserland slowage
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Dec 08 18:55:00 +0000 2007
>Originator:     De Zeurkous
>Release:        NetBSD 4.0_RC5
>Organization:
Korax Productions
	
>Environment:
	
	
System: Unretrievable (see below) 
Architecture: i386 
Machine: i386
>Description:

When using GENERIC.MP on a Sun Ultra 20 M2, it virtually grinds luserland to a halt. Kernel behavior can still be observed; ddb also still respons properly. Everything in luserland (including init), however, executes extremely slowly, to the point of taking about 2 mins to update the MOTD, and about 30 secs to process a keystroke. It also takes ages to spawn a single-luser shell by way of -s, to the point that I've aborted the procedure through a cold boot process. GENERIC seems to work just fine.

Included is the only dmesg I can give you:

Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 4.0_RC5 (GENERIC) #0: Wed Nov 28 13:48:20 PST 2007
	builds@wb34:/home/builds/ab/netbsd-4-0-RC5/i386/200711280522Z-obj/home/builds/ab/netbsd-4-0-RC5/src/sys/arch/i386/compile/GENERIC
total memory = 510 MB
rbus: rbus_min_start set to 0x40000000
avail memory = 491 MB
timecounter: Timecounters tick every 10.000 msec
timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
BIOS32 rev. 0 found at 0xfd5cd
mainbus0 (root)
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD Athlon 64 FX or Athlon 64 X2 (686-class), 1800.13 MHz, id 0x40f33
cpu0: features ffdbfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features ffdbfbff<PGE,MCA,CMOV,PAT,PSE36,MPC,NOX,MMXX,MMX>
cpu0: features ffdbfbff<FXSR,SSE,SSE2,B27,HTT,LONG,3DNOW2,3DNOW>
cpu0: features2 2001<SSE3>
cpu0: "Dual-Core AMD Opteron(tm) Processor 1210"
cpu0: I-cache 64 KB 64B/line 2-way, D-cache 64 KB 64B/line 2-way
cpu0: L2 cache 1 MB 64B/line 16-way
cpu0: ITLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu0: DTLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu0: AMD Power Management features: 3f<STC,TM,TTP,VID,FID,TS>
cpu0: calibrating local timer
cpu0: apic clock running at 200 MHz
cpu0: 16 page colors
cpu1 at mainbus0: apid 1 (application processor)
cpu1: not started
ioapic0 at mainbus0 apid 2 (I/O APIC)
ioapic0: pa 0xfec00000, version 11, 24 pins
acpi0 at mainbus0: Advanced Configuration and Power Interface
acpi0: using Intel ACPI CA subsystem version 20060217
acpi0: X/RSDT: OemId <PTLTD ,  RSDT  ,06040000>, AslId < LTP,00000000>
acpi0: SCI interrupting at int 9
acpi0: fixed-feature power button present
timecounter: Timecounter "ACPI-Fast" frequency 3579545 Hz quality 1000
ACPI-Fast 24-bit timer
ACPI Object Type 'Processor' (0x0c) at acpi0 not configured
ACPI Object Type 'Processor' (0x0c) at acpi0 not configured
acpibut0 at acpi0 (PNP0C0C): ACPI Power Button
PNP0C01 [System Board] at acpi0 not configured
PNP0A03 [PCI/PCI-X Host Bridge] at acpi0 not configured
PNP0C02 [Plug and Play motherboard register resources] at acpi0 not configured
PNP0C02 [Plug and Play motherboard register resources] at acpi0 not configured
PNP0C02 [Plug and Play motherboard register resources] at acpi0 not configured
PNP0000 [AT Interrupt Controller] at acpi0 not configured
attimer1 at acpi0 (PNP0100): AT Timer
attimer1: io 0x40-0x43 irq 0
PNP0200 [AT DMA Controller] at acpi0 not configured
pcppi1 at acpi0 (PNP0800)
pcppi1: io 0x61
pcppi1: children must have an explicit unit
midi0 at pcppi1: PC speaker (CPU-intensive output)
sysbeep0 at pcppi1
PNP0B00 [AT Real-Time Clock] at acpi0 not configured
npx1 at acpi0 (PNP0C04)
npx1: io 0xf0-0xf1 irq 13
npx1: reported by CPUID; using exception 16
PNP0A05 [Generic Container Device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
pcppi1: attached to attimer1
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
NVIDIA nForce MCP55 Memory Controller (RAM memory, revision 0xa2) at pci0 dev 0 function 0 not configured
pcib0 at pci0 dev 1 function 0
pcib0: NVIDIA product 0x0364 (rev. 0xa3)
NVIDIA nForce MCP55 SMBus Controller (SMBus serial bus, revision 0xa3) at pci0 dev 1 function 1 not configured
ohci0 at pci0 dev 2 function 0: NVIDIA nForce MCP55 OHCI USB Controller (rev. 0xa1)
LUS0: Picked IRQ 20 with weight 0
ohci0: interrupting at ioapic0 pin 20 (irq 7)
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: NVIDIA OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 10 ports with 10 removable, self powered
ehci0 at pci0 dev 2 function 1: NVIDIA nForce MCP55 EHCI USB Controller (rev. 0xa2)
LUS2: Picked IRQ 21 with weight 0
ehci0: interrupting at ioapic0 pin 21 (irq 5)
ehci0: BIOS has given up ownership
ehci0: EHCI version 1.0
ehci0: companion controller, 10 ports each: ohci0
usb1 at ehci0: USB revision 2.0
uhub1 at usb1
uhub1: NVIDIA EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub1: 10 ports with 10 removable, self powered
viaide0 at pci0 dev 4 function 0
viaide0: NVIDIA MCP55 IDE Controller (rev. 0xa1)
viaide0: bus-master DMA support present
viaide0: primary channel configured to compatibility mode
viaide0: primary channel interrupting at ioapic0 pin 14 (irq 14)
atabus0 at viaide0 channel 0
viaide0: secondary channel configured to compatibility mode
viaide0: secondary channel ignored (disabled)
viaide1 at pci0 dev 5 function 0
viaide1: NVIDIA MCP55 Serial ATA Controller (rev. 0xa3)
viaide1: bus-master DMA support present
viaide1: primary channel wired to native-PCI mode
LTID: Picked IRQ 22 with weight 0
viaide1: using ioapic0 pin 22 (irq 10) for native-PCI interrupt
atabus1 at viaide1 channel 0
viaide1: secondary channel wired to native-PCI mode
atabus2 at viaide1 channel 1
viaide2 at pci0 dev 5 function 1
viaide2: NVIDIA MCP55 Serial ATA Controller (rev. 0xa3)
viaide2: bus-master DMA support present
viaide2: primary channel wired to native-PCI mode
LSI1: Picked IRQ 23 with weight 0
viaide2: using ioapic0 pin 23 (irq 11) for native-PCI interrupt
atabus3 at viaide2 channel 0
viaide2: secondary channel wired to native-PCI mode
atabus4 at viaide2 channel 1
ppb0 at pci0 dev 6 function 0: NVIDIA nForce MCP55 PCI-PCI Bridge (rev. 0xa2)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga1 at pci1 dev 5 function 0: ATI Technologies product 0x515e (rev. 0x02)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
fwohci0 at pci1 dev 6 function 0: VIA Technologies VT6306 IEEE 1394 Host Controller (rev. 0x80)
LNK3: Picked IRQ 16 with weight 0
fwohci0: interrupting at ioapic0 pin 16 (irq 11)
fwohci0: OHCI version 1.10 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 08:00:20:14:40:03:38:91
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
ieee1394if0 at fwohci0: IEEE1394 bus
fwip0 at ieee1394if0: IP over IEEE1394
fwohci0: Initiate bus reset
azalia0 at pci0 dev 6 function 1: Generic High Definition Audio Controller
LAZA: Picked IRQ 20 with weight 1
azalia0: interrupting at ioapic0 pin 20 (irq 10)
azalia0: host: NVIDIA nForce MCP55 High Definition Audio Controller (rev. 162)
azalia0: host: High Definition Audio rev. 1.0
nfe0 at pci0 dev 8 function 0: NVIDIA nForce MCP55 Gigabit Ethernet Controller (rev. 0xa3)
LMAC: Picked IRQ 21 with weight 1
nfe0: interrupting at ioapic0 pin 21 (irq 11)
nfe0: Ethernet address 00:14:4f:a1:c8:46
ukphy0 at nfe0 phy 1: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000ac2, model 0x0021, rev. 1
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
nfe1 at pci0 dev 9 function 0: NVIDIA nForce MCP55 Gigabit Ethernet Controller (rev. 0xa3)
LMA2: Picked IRQ 22 with weight 1
nfe1: interrupting at ioapic0 pin 22 (irq 10)
nfe1: Ethernet address 00:14:4f:a1:c8:47
ukphy1 at nfe1 phy 1: Generic IEEE 802.3u media interface
ukphy1: OUI 0x000ac2, model 0x0021, rev. 1
ukphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
ppb1 at pci0 dev 10 function 0: NVIDIA product 0x0376 (rev. 0xa3)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled, rd/line, wr/inv ok
ppb2 at pci0 dev 11 function 0: NVIDIA product 0x0374 (rev. 0xa3)
pci3 at ppb2 bus 3
pci3: i/o space, memory space enabled, rd/line, wr/inv ok
ppb3 at pci0 dev 12 function 0: NVIDIA product 0x0374 (rev. 0xa3)
pci4 at ppb3 bus 4
pci4: i/o space, memory space enabled, rd/line, wr/inv ok
ppb4 at pci0 dev 13 function 0: NVIDIA product 0x0378 (rev. 0xa3)
pci5 at ppb4 bus 5
pci5: i/o space, memory space enabled, rd/line, wr/inv ok
ppb5 at pci0 dev 14 function 0: NVIDIA product 0x0375 (rev. 0xa3)
pci6 at ppb5 bus 6
pci6: i/o space, memory space enabled, rd/line, wr/inv ok
ppb6 at pci0 dev 15 function 0: NVIDIA nForce MCP55 PCI-Express 16x Port (rev. 0xa3)
pci7 at ppb6 bus 7
pci7: i/o space, memory space enabled, rd/line, wr/inv ok
pchb0 at pci0 dev 24 function 0
pchb0: Advanced Micro Devices AMD64 HyperTransport configuration (rev. 0x00)
pchb1 at pci0 dev 24 function 1
pchb1: Advanced Micro Devices AMD64 Address Map configuration (rev. 0x00)
pchb2 at pci0 dev 24 function 2
pchb2: Advanced Micro Devices AMD64 DRAM configuration (rev. 0x00)
pchb3 at pci0 dev 24 function 3
pchb3: Advanced Micro Devices AMD64 Miscellaneous configuration (rev. 0x00)
isa0 at pcib0
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
isapnp0: no ISA Plug 'n Play devices found
ioapic0: enabling
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
ieee1394if0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
ieee1394if0: bus manager 0 (me)
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
azalia0: codec[0]: Realtek ALC883 (rev. 0.2)
azalia0: codec[0]: High Definition Audio rev. 1.0
azalia0: playback: max channels=8, encodings=1<PCM>
azalia0: playback: PCM formats=e0560<24bit,20bit,16bit,192kHz,96kHz,48kHz,44.1kHz>
azalia0: recording: max channels=4, encodings=1<PCM>
azalia0: recording: PCM formats=60160<20bit,16bit,96kHz,48kHz,44.1kHz>
audio0 at azalia0: full duplex, independent
Kernelized RAIDframe activated
atapibus0 at atabus0: 2 targets
cd0 at atapibus0 drive 0: <LITE-ON DVD SHD-16P1S, , GS04> cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
cd0(viaide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA)
viaide1 port 0: device present, speed: 3.0Gb/s
wd0 at atabus1 drive 0: <HITACHI HDS7216SBSUN160G 0733QW3KMF>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 149 GB, 310101 cyl, 16 head, 63 sec, 512 bytes/sect x 312581808 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd0(viaide1:0:0): using PIO mode 4, Ultra-DMA mode 6 (Ultra/133) (using DMA)
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
uhidev0 at uhub0 port 4 configuration 1 interface 0
uhidev0: Tangtop USBPS2, rev 1.10/0.01, addr 2, iclass 3/1
ukbd0 at uhidev0
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub0 port 4 configuration 1 interface 1
uhidev1: Tangtop USBPS2, rev 1.10/0.01, addr 2, iclass 3/1
uhidev1: 3 report ids
ums0 at uhidev1 reportid 1: 5 buttons and Z dir.
wsmouse0 at ums0 mux 0
uhid0 at uhidev1 reportid 2: input=2, output=0, feature=0
uhid1 at uhidev1 reportid 3: input=1, output=0, feature=0

I'll try and build a custom MP kernel later and see if I can find what causes the problem.

>How-To-Repeat:
Dump the Slowaris crap from a Sun Ultra 20 M2 and install NetBSD-4.0_RC5/i386 with GENERIC.MP on it :) 
>Fix:
No fix is currently known.

>Unformatted: