Date: Mon, 26 Feb 2001 10:51:02 -0600 From: "Thomas T. Veldhouse" <veldy@veldy.net> To: <freebsd-stable@freebsd.org> Subject: microuptime() went backwards (50596.915024 -> 50596.895202) Message-ID: <008401c0a014$4e1c1ff0$3028680a@tgt.com>
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I seem to have a problem unique to my Athlon system. I noticed this problem
begin somewhere around 4.2-STABLE. The message:
microuptime() went backwards (50596.915024 -> 50596.895202)
is repeated thousands of times and floods my syslog when the system under
load (currently during a buildworld). The times vary of course.
What changes have been made relatively recently to cause this error? This
seems to be a problem for either Classic Athlons or it has also been
speculated by a couple to be VIA KX133 related.
Please advise.
Tom Veldhouse
veldy@veldy.net
The following is my uname -a output:
FreeBSD cascade.veldy.net 4.2-20010223-STABLE FreeBSD 4.2-20010223-STABLE
#0: Sat Feb 24 10:56:35 CST 2001
root@cascade.veldy.net:/usr/src/sys/compile/CASCADE i386
The following is my dmesg output:
Copyright (c) 1992-2001 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 4.2-20010223-STABLE #0: Sat Feb 24 10:56:35 CST 2001
root@cascade.veldy.net:/usr/src/sys/compile/CASCADE
Timecounter "i8254" frequency 1193182 Hz
CPU: AMD-K7(tm) Processor (600.03-MHz 686-class CPU)
Origin = "AuthenticAMD" Id = 0x612 Stepping = 2
Features=0x81f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,P
AT,MMX>
AMD Features=0xc0400000<AMIE,DSP,3DNow!>
real memory = 402587648 (393152K bytes)
config> q
avail memory = 388157440 (379060K bytes)
Preloaded elf kernel "kernel" at 0xc038c000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc038c09c.
Pentium Pro MTRR support enabled
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib2: <PCI to PCI bridge (vendor=1106 device=8391)> at device 1.0 on pci0
pci1: <PCI bus> on pcib2
pci1: <NVidia Riva TNT2 graphics accelerator> at 0.0 irq 10
isab0: <VIA 82C686 PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686 ATA66 controller> port 0xd000-0xd00f at device 7.1 on
pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <VIA 83C572 USB controller> port 0xd400-0xd41f irq 11 at device 7.2
on pci0
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uscanner0: Visioneer Visioneer 6100 USB Scanner, rev 1.00/0.00, addr 2
ulpt0: Lexmark International, Inc. Lexmark Optra E312, rev 1.00/1.00, addr
3, iclass 7/1
uhci1: <VIA 83C572 USB controller> port 0xd800-0xd81f irq 11 at device 7.3
on pci0
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
dc0: <LC82C115 PNIC II 10/100BaseTX> port 0xdc00-0xdcff mem
0xd9000000-0xd90000ff irq 11 at device 8.0 on pci0
dc0: Ethernet address: 00:a0:cc:69:86:bd
miibus0: <MII bus> on dc0
dcphy0: <Intel 21143 NWAY media interface> on miibus0
dcphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pcm0: <Creative EMU10K1> port 0xe000-0xe01f irq 5 at device 13.0 on pci0
pcib1: <Host to PCI bridge> on motherboard
pci2: <PCI bus> on pcib1
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
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
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
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
IP packet filtering initialized, divert disabled, rule-based forwarding
disabled, default to deny, unlimited logging
ad0: 19574MB <WDC WD205BA> [39770/16/63] at ata0-master UDMA66
ad1: 19092MB <WDC WD200BA> [38792/16/63] at ata0-slave UDMA66
acd0: DVD-ROM <Compaq DVD-ROM DVD-114 0114> at ata1-master using UDMA33
acd1: CD-RW <Hewlett-Packard CD-Writer Plus 9100> at ata1-slave using UDMA33
Mounting root from ufs:/dev/ad1s2a
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