Date: Tue, 16 Sep 1997 18:00:24 -0700 (PDT) From: Pomegranate <daver@flag.blackened.net> To: freebsd-smp@freebsd.org Subject: Fast Clock with SMP Message-ID: <199709170100.SAA29538@flag.blackened.net>
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hello.
recently set up a SMP box. it has a Tyan Natoma s1686 motherboard,
64mb ram and two PII/266 (intel) cpu's.
i slightly modified the SMP-GENERIC kernel, compiled, rebooted,
cvsup'd to 3.0-CURRENT and made world.
still, since the very first boot, the time-of-day clock has been
gaining about 6-7 seconds for every real-time second. i searched
the mailing list archives and found one person with the same problem,
which apparently occurred while running an SMP kernel in a box with only
one CPU.
this one has both CPU's, both are seen at bootup by DMESG.
---------------------------
FreeBSD 3.0-CURRENT #0: Tue Sep 16 18:22:59 PDT 1997
root@biko.vicor-nb.com:/usr/src/sys/compile/BIKO
CPU: Pentium Pro (686-class CPU)
Origin = "GenuineIntel" Id = 0x633 Stepping=3
Features=0x80fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,MMX>
real memory = 67108864 (65536K bytes)
avail memory = 62693376 (61224K bytes)
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 1, version: 0x00040011, at 0xfee00000
cpu1 (AP): apic id: 0, version: 0x00040011, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000
Probing for devices on PCI bus 0:
chip0: <Intel 82440FX (Natoma) PCI and memory controller> rev 0x02 on pci0.0.0
chip1: <Intel 82371SB PCI to ISA bridge> rev 0x01 on pci0.7.0
ide_pci0: <Intel PIIX3 Bus-master IDE controller> rev 0x00 on pci0.7.1
fxp0: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x02 int a irq 18 on pci0.12.0
fxp0: Ethernet address 00:a0:c9:69:02:a3
vga0: <VGA-compatible display device> rev 0x01 int a irq 17 on pci0.13.0
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
ed0 not found at 0x280
ed1 not found at 0x300
fe0 not found at 0x300
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
sio2: disabled, not probed.
sio3: disabled, not probed.
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
mse0 at 0x23c irq 5 on isa
psm0: disabled, not probed.
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <ST33240A>
wd0: 3077MB (6303024 sectors), 6253 cyls, 16 heads, 63 S/T, 512 B/S
ie0: unknown board_id: f000
ie0 not found at 0x300
ie1: unknown board_id: f000
ie1 not found at 0x360
ep0 not found at 0x300
ex0 not found
le0 not found at 0x300
lnc0 not found at 0x280
ze0 not found at 0x300
zp0 not found at 0x300
npx0 on motherboard
npx0: INT 16 interface
APIC_IO: routing 8254 via 8259 on pin 0
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