Date: Sun, 19 Nov 2000 18:12:45 -0800 (PST) From: "Thomas D. Dean" <tomdean@ix.netcom.com> To: current@FreeBSD.ORG Subject: Clock Strangeness in UP Kernel Message-ID: <200011200212.eAK2Cj500371@ix.netcom.com>
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The clock is strange in -current UP.
# uname -a
FreeBSD celebris 5.0-CURRENT FreeBSD 5.0-CURRENT #1: \
Sun Nov 19 17:53:38 PST 2000 \
root@celebris:/usr/src/sys/compile/CELEBRIS i386
dmesg is attached. Some of the garbage at the top of dmesg is from 2
kernels ago, 15 Nov., when I was running SMP and had silo overflows.
Both timecounters are listed in dmesg:
...
Timecounter "i8254" frequency 1193026 Hz
Timecounter "TSC" frequency 121329898 Hz
...
I have
options CLK_USE_I8254_CALIBRATION
in my config.
Some recent output from ntpdate log: (I changed the server from
140.142.16.34 to xxxx).
...
18 Nov 16:29:41 ntpdate[10276]: step time server xxxx offset -443.428520 sec
18 Nov 20:29:41 ntpdate[10463]: step time server xxxx offset -443.462177 sec
19 Nov 00:29:41 ntpdate[10799]: step time server xxxx offset -443.474425 sec
19 Nov 04:29:42 ntpdate[11305]: step time server xxxx offset -443.515112 sec
19 Nov 08:29:41 ntpdate[11536]: step time server xxxx offset -443.437881 sec
19 Nov 12:29:42 ntpdate[11855]: step time server xxxx offset -443.461982 sec
19 Nov 16:29:41 ntpdate[12378]: step time server xxxx offset -443.430663 sec
The step has a high std. dev. I see values of 115 to 2900 sec over
the past few days. The machine was up for 3 days, 10 hours, before
rebooting an hour ago.
tomdean
===== dmesg ============
B/s transfers (10.000MHz, offset 8), Tagged Queueing Enabled
da2: 3090MB (6328861 512 byte sectors: 255H 63S/T 393C)
da0 at ncr0 bus 0 target 0 lun 0
da0: <QUANTUM FIREBALL1080S 1Q09> Fixed Direct Access SCSI-2 device
da0: 10.000MB/s transfers (10.000MHz, offset 8)
da0: 1042MB (2134305 512 byte sectors: 255H 63S/T 132C)
Mounting root from ufs:/dev/da1s1a
da1 at ncr0 bus 0 target 1 lun 0
da1: <IBM DNES-309170 SAH0> Fixed Direct Access SCSI-3 device
da1: 10.000MB/s transfers (10.000MHz, offset 8), Tagged Queueing Enabled
da1: 8748MB (17916240 512 byte sectors: 255H 63S/T 1115C)
SMP: AP CPU #1 Launched!
de0: enabling BNC port
sio0: 1 more silo overflow (total 1)
sio0: 1 more silo overflow (total 2)
sio0: 1 more silo overflow (total 3)
sio0: 2 more silo overflows (total 5)
boot() called on cpu#1
Waiting (max 60 seconds) for system process `bufdaemon' to stop...stopped
Waiting (max 60 seconds) for system process `syncer' to stop...stopped
syncing disks...
done
Uptime: 6m6s
RebooCopyright (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 #1: Sun Nov 19 17:53:38 PST 2000
root@celebris:/usr/src/sys/compile/CELEBRIS
Timecounter "i8254" frequency 1193026 Hz
Timecounter "TSC" frequency 121329898 Hz
CPU: Pentium/P54C (121.33-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x525 Stepping = 5
Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>
real memory = 100663296 (98304K bytes)
avail memory = 94822400 (92600K bytes)
Preloaded elf kernel "kernel" at 0xc0302000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc030209c.
Intel Pentium detected, installing workaround for F00F bug
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> at pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
ncr0: <ncr 53c810 fast10 scsi> port 0xec00-0xecff mem 0xfedfbf00-0xfedfbfff irq 11 at device 1.0 on pci0
isab0: <Intel 82378IB PCI to ISA bridge> at device 2.0 on pci0
isa0: <ISA bus> on isab0
pci0: <Matrox MGA Millennium 2064W graphics accelerator> at 6.0 irq 9
de0: <Digital 21041 Ethernet> port 0xe880-0xe8ff mem 0xfedfbe80-0xfedfbeff irq 10 at device 8.0 on pci0
de0: DEC DE450-CA 21041 [10Mb/s] pass 1.1
de0: address 00:00:f8:02:76:db
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 Generic PS/2 mouse, device ID 0
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
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: <IBM Enhanced (101/102-key) KC> can't assign resources
unknown: <Microsoft PS/2 Mouse> can't assign resources
unknown: <16550 compatible COM device> can't assign resources
unknown: <16550 compatible COM device> can't assign resources
unknown: <LPT printer port> can't assign resources
unknown: <Floppy Controller> can't assign resources
Waiting 10 seconds for SCSI devices to settle
Mounting root from ufs:/dev/da1s1a
cd0 at ncr0 bus 0 target 5 lun 0
cd0: <TOSHIBA CD-ROM XM-5401TA 3605> Removable CD-ROM SCSI-2 device
cd0: 4.237MB/s transfers (4.237MHz, offset 8)
cd0: cd present [329507 x 2048 byte records]
da0 at ncr0 bus 0 target 0 lun 0
da0: <QUANTUM FIREBALL1080S 1Q09> Fixed Direct Access SCSI-2 device
da0: 10.000MB/s transfers (10.000MHz, offset 8)
da0: 1042MB (2134305 512 byte sectors: 255H 63S/T 132C)
da2 at ncr0 bus 0 target 2 lun 0
da2: <QUANTUM FIREBALL ST3.2S 0F0C> Fixed Direct Access SCSI-2 device
da2: 10.000MB/s transfers (10.000MHz, offset 8), Tagged Queueing Enabled
da2: 3090MB (6328861 512 byte sectors: 255H 63S/T 393C)
da1 at ncr0 bus 0 target 1 lun 0
da1: <IBM DNES-309170 SAH0> Fixed Direct Access SCSI-3 device
da1: 10.000MB/s transfers (10.000MHz, offset 8), Tagged Queueing Enabled
da1: 8748MB (17916240 512 byte sectors: 255H 63S/T 1115C)
de0: enabling BNC port
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