I've upgraded my -current box from a pre-SMPNG kernel (an August
vintage) to a post-SMPNG kernel (built today), and have noticed
behaviour I haven't seen discussed in -current.

I followed the instructions in UPDATING as well as discussed on
the -current list, and the system boots with nothing out of the
ordinary. There is no /modules, and the host is a UP machine.

However, after approximately 20-30 minutes, it appears to slow
down immensely, until it basically halts. Keyboard input at the console 
appears not to have any effect (although Caps, Scroll and Num lock work). 
The machine is pingable, and I can change VT's, but no input is accepted.

All services on the box get as far as the Connected stage, but no banner

I left it for several minutes, and saw
microuptime() went backwards (2757.4076411 -> 2757.992648), with the
right hand side number increasing periodically. After I hard-boot
the machine it carries on as normal again for 20-30 minutes before
reverting to it's zombie state.

Booting a kernel prior to the SMPNG changes does not have the same
problems. Should I revert to PRE_SMPNG days, with a cvsup tag of 
*default release=cvs tag=PRE_SMPNG ?

Here is the output of dmesg :
Copyright (c) 1992-2000 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 5.0-CURRENT #0: Sun Oct  1 13:41:45 SAST 2000
    [EMAIL PROTECTED]:/usr/src/sys/compile/CHAIN
Timecounter "i8254"  frequency 1193182 Hz
Timecounter "TSC"  frequency 200456354 Hz
CPU: Pentium/P54C (200.46-MHz 586-class CPU)
  Origin = "GenuineIntel"  Id = 0x52c  Stepping = 12
real memory  = 117440512 (114688K bytes)
config> port sbc 0x220
config> q
avail memory = 110428160 (107840K bytes)
Preloaded elf kernel "kernel" at 0xc039d000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc039d09c.
Intel Pentium detected, installing workaround for F00F bug
ccd0-1: Concatenated disk drivers
VESA: v1.2, 2048k memory, flags:0x0, mode table:0xc00c1bfc (c0001bfc)
VESA: S3 Incorporated. Trio64V+
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <SiS 5591 host to PCI bridge> at pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
atapci0: <SiS 5591 ATA33 controller> port 
0x4000-0x400f,0x374-0x377,0x170-0x177,0x3f4-0x3f7,0x1f0-0x1f7 irq 14 at devic
e 0.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
isab0: <SiS 85c503 PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
pci0: <unknown card> (vendor=0x1039, dev=0x0009) at 1.1
pcib1: <PCI to PCI bridge (vendor=1039 device=0001)> at device 2.0 on pci0
pci1: <PCI bus> on pcib1
pci0: <S3 Trio graphics accelerator> at 9.0 irq 5
de0: <Digital 21041 Ethernet> port 0xe000-0xe07f mem 0xea000000-0xea00007f irq 9 at 
device 11.0 on pci0
de0: SMC 21041 [10Mb/s] pass 1.1
de0: address 00:00:c0:f9:2f:c8
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
plip0: <PLIP network interface> on ppbus0
sc0: <System console> 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
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
unknown: <PNP0303> can't assign resources
unknown: <PNP0f13> can't assign resources
unknown: <PNP0501> can't assign resources
unknown: <PNP0700> can't assign resources
unknown: <PNP0400> can't assign resources
unknown: <PNP0501> can't assign resources
IP packet filtering initialized, divert enabled, rule-based forwarding enabled, 
default to deny, logging limited to 100
 packets/entry by default
IPsec: Initialized Security Association Processing.
de0: enabling 10baseT port
ad0: 8693MB <WDC AC29100D> [17662/16/63] at ata0-master UDMA33
ad1: 1033MB <WDC AC21000H> [2100/16/63] at ata1-master WDMA2
Mounting root from ufs:/dev/ad0s1a

Khetan Gajjar.
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