Date: Mon, 08 Feb 1999 18:24:42 -0600 From: "William S. Duncanson" <caesar@starkreality.com> To: freebsd-smp@FreeBSD.ORG Subject: Problems keeping time Message-ID: <4.1.19990208181440.03d1d4c0@fire.starkreality.com>
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I just upgraded a FreeBSD box to a SMP system (basically, I swapped out the MB and added a processor). Now, I'm having horrendous problems with the kernel clock drifting (it's running fast, about 7 seconds every 10 minutes). So far, xntpd seems to be keeping everything relatively close, but it's updating the clock every 10 minutes or so. ntpq claims that all of the configured peers are "insane". I'm pretty sure that this is a SMP issue, since it worked fine with a single processor (4.0-current). So, the question is, how do I fix this? Here's my kernel config. I added the "CLK_USE_I8254_CALIBRATION" after I noticed the problem, but it doesn't appear to have fixed it: machine "i386" ident FIRE maxusers 256 options "MAXDSIZ=(256*1024*1024)" options "DFLDSIZ=(256*1024*1024)" options PQ_HUGECACHE # color for 1024k/16k cache options INCLUDE_CONFIG_FILE # Include this file in kernel config kernel root on wd0s1a swap on wd0s1b cpu "I586_CPU" # aka Pentium(tm) options "CPU_DISABLE_5X86_LSSER" options "CPU_FASTER_5X86_FPU" options SMP # Symmetric MultiProcessor Kernel options APIC_IO # Symmetric (APIC) I/O options NCPU=2 # number of CPUs options NBUS=5 # number of busses options NAPIC=2 # number of IO APICs options NINTR=25 # number of INTs options "COMPAT_43" options SYSVSHM options SYSVSEM options SYSVMSG options "MD5" options KTRACE #kernel tracing options PERFMON options UCONSOLE options USERCONFIG #boot -c editor options VISUAL_USERCONFIG #visual boot -c editor options INET #Internet communications protocols pseudo-device ether #Generic Ethernet pseudo-device loop #Network loopback device pseudo-device bpfilter 4 #Berkeley packet filter options PPP_BSDCOMP #PPP BSD-compress support options PPP_DEFLATE #PPP zlib/deflate/gzip support options PPP_FILTER #enable bpf filtering (needs bpfilter) options "ICMP_BANDLIM" options FFS #Fast filesystem options FFS_ROOT #FFS usable as root device options SOFTUPDATES options NSWAPDEV=20 options QUOTA #enable disk quotas options "NFS_MINATTRTIMO=3" # VREG attrib cache timeout in sec options "NFS_MAXATTRTIMO=60" options "NFS_MINDIRATTRTIMO=30" # VDIR attrib cache timeout in sec options "NFS_MAXDIRATTRTIMO=60" options "NFS_GATHERDELAY=10" # Default write gather delay (msec) options "NFS_UIDHASHSIZ=29" # Tune the size of nfssvc_sock with this options "NFS_WDELAYHASHSIZ=16" # and with this options "NFS_MUIDHASHSIZ=63" # Tune the size of nfsmount with this options NFS_DEBUG # Enable NFS Debugging options "P1003_1B" options "_KPOSIX_PRIORITY_SCHEDULING" options "_KPOSIX_VERSION=199309L" controller scbus0 #base SCSI code device da0 #SCSI direct access devices (aka disks) device sa0 #SCSI tapes device cd0 #SCSI CD-ROMs device pass0 #CAM passthrough driver options "CAM_MAX_HIGHPOWER=4" options SCSI_NO_SENSE_STRINGS options SCSI_NO_OP_STRINGS options SCSI_REPORT_GEOMETRY options SCSI_DELAY=8000 # Be pessimistic about Joe SCSI device options "CHANGER_MIN_BUSY_SECONDS=2" options "CHANGER_MAX_BUSY_SECONDS=10" options "SA_SPACE_TIMEOUT=(60)" options "SA_REWIND_TIMEOUT=(2*60)" options "SA_ERASE_TIMEOUT=(4*60)" pseudo-device pty 256 #Pseudo ttys - can go as high as 256 pseudo-device speaker #Play IBM BASIC-style noises out your speaker pseudo-device gzip #Exec gzipped a.out's pseudo-device vn #Vnode driver (turns a file into a device) pseudo-device snp 4 #Snoop device - to look at pty/vty/etc.. options "MSGBUF_SIZE=40960" controller isa0 options "AUTO_EOI_1" options "AUTO_EOI_2" options "MAXMEM=(144*1024)" controller pnp0 controller atkbdc0 at isa? port IO_KBD tty device atkbd0 at isa? tty irq 1 device vga0 at isa? port ? conflicts pseudo-device splash #device vt0 at isa? tty #options XSERVER # support for running an X serve r. #options FAT_CURSOR # start with block cursor device sc0 at isa? tty options MAXCONS=16 # number of virtual consoles options "STD8X16FONT" # Compile font in makeoptions "STD8X16FONT"="cp850" options SC_HISTORY_SIZE=200 # number of history buffer lines options SC_DISABLE_REBOOT # disable reboot key sequence device npx0 at isa? port IO_NPX iosiz 0x0 flags 0x0 irq 13 controller wdc0 at isa? port "IO_WD1" bio irq 14 flags 0xa0ffa0ff disk wd0 at wdc0 drive 0 disk wd1 at wdc0 drive 1 controller wdc1 at isa? port "IO_WD2" bio irq 15 flags 0xa0ffa0ff options ATAPI #Enable ATAPI support for IDE bus options ATAPI_STATIC #Don't do it as an LKM options IDE_DELAY=8000 # Be optimistic about Joe IDE device device acd0 controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 disk fd0 at fdc0 drive 0 device lpt0 at isa? port? tty irq 7 device sio0 at isa? port "IO_COM1" tty flags 0x10 irq 4 device sio0 at isa? port "IO_COM2" tty flags 0x10 irq 3 device ed0 at isa? port 0x300 net irq 10 iomem 0xd8000 device pcm0 at isa? port ? tty irq 10 drq 1 flags 0x0 device pca0 at isa? port "IO_TIMER1" tty controller pci0 controller ahc1 device de0 device xl0 options HW_WDOG options COMPAT_LINUX options PANIC_REBOOT_WAIT_TIME=16 options options SHOW_BUSYBUFS # List buffers that prevent root unmount William S. Duncanson caesar@starkreality.com The driving force behind the NC is the belief that the companies who brought us things like Unix, relational databases, and Windows can make an appliance that is inexpensive and easy to use if they choose to do that. -- Scott Adams To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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