Date: Mon, 6 Mar 2000 15:11:54 -0800 From: Chris Piazza <cpiazza@jaxon.net> To: Dave Boers <djb@wit389306.student.utwente.nl> Cc: Peter Jeremy <peter.jeremy@alcatel.com.au>, Arun Sharma <adsharma@sharmas.dhs.org>, freebsd-current@FreeBSD.ORG Subject: Re: current lockups Message-ID: <20000306151154.A21350@norn.ca.eu.org> In-Reply-To: <20000306235921.A27904@relativity.student.utwente.nl>; from djb@wit389306.student.utwente.nl on Mon, Mar 06, 2000 at 11:59:21PM %2B0100 References: <20000304235010.B10778@sharmas.dhs.org> <20000306202718.A26973@relativity.student.utwente.nl> <00Mar7.094555est.115210@border.alcanet.com.au> <20000306235921.A27904@relativity.student.utwente.nl>
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On Mon, Mar 06, 2000 at 11:59:21PM +0100, Dave Boers wrote:
> It is rumoured that Peter Jeremy had the courage to say:
> > Note that ntpd will use rtprio if the Posix P1003.1b extensions aren't
> > enabled in the kernel. (These were enabled by default in GENERIC on
> > i386 in mid-January). If you have the new ntpd (rather than xntpd)
> > and are running a kernel without options P1003_1B,
> > _KPOSIX_PRIORITY_SCHEDULING and _KPOSIX_VERSION=199309L, you could
> > potentially get a lockup due to a priority inversion. (Though I
> > think the probability is very small).
>
> I don't use ntpd (I use ntpdate) and I do have those options enabled in my
> kernel (all three of them). IIRC they are needed to get either cdrdao or
> cdrecord to work.
>
> Seems that everything points to UDMA66 so far...
...maybe in certain combinations.
I have a BP6 with dual celerons (466's @ 504) and have had no problems
whatsoever.
FreeBSD 4.0-CURRENT #4: Sun Mar 5 12:20:41 PST 2000
cpiazza@norn.ca.eu.org:/usr/src/sys/compile/NORN
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium II/Pentium II Xeon/Celeron (503.92-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x665 Stepping = 5
Features=0x183fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CM
OV,PAT,PSE36,MMX,FXSR>
real memory = 268369920 (262080K bytes)
avail memory = 256987136 (250964K bytes)
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 0, version: 0x00040011, at 0xfee00000
cpu1 (AP): apic id: 1, version: 0x00040011, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000
....
ad0: 9765MB <FUJITSU MPC3102AT E> [19841/16/63] at ata0-master using UDMA33
ad4: 12949MB <IBM-DJNA-371350> [28064/15/63] at ata2-master using UDMA66
acd0: CDROM <DELTA OPC-K101/ST1 F/W by OIPD> at ata1-slave using PIO4
ad0 is a DOS drive, ad4 is what I have FreeBSD on.
-Chris
--
cpiazza@jaxon.net cpiazza@FreeBSD.org
Abbotsford, BC, Canada
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