Hi, A reliable box has begun to randomly reboot in the last couple of days.
There's nothing obviously unusual in /var/log/* $ ls -ld /var/crash drwxrwx--- 2 root wheel 512 Dec 24 2013 /var/crash/ $ ls -lA /var/crash total 4 -rw-r--r-- 1 root wheel 5 Jul 30 2013 minfree I set up a 1 min cron job of sysctl | fgrep hw.sensors.lm1.temp & uptime The last one before a reboot was: hw.sensors.lm1.temp0=34.00 degC hw.sensors.lm1.temp2=33.50 degC 2:53PM up 31 mins, 2 users, load averages: 0.13, 0.19, 0.23 I'm guessing some bit of hardware is on it's way out, but which? $ ls -l /var/run/dmesg.boot -rw-r--r-- 1 root wheel 3612 Aug 5 14:58 /var/run/dmesg.boot OpenBSD 5.4 (GENERIC) #37: Tue Jul 30 12:05:01 MDT 2013 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC cpu0: Intel Pentium III ("GenuineIntel" 686-class, 128KB L2 cache) 635 MHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PSE36,MMX,FXSR,SSE,PERF real mem = 535228416 (510MB) avail mem = 515035136 (491MB) mainbus0 at root bios0 at mainbus0: AT/286+ BIOS, date 01/15/99, BIOS32 rev. 0 @ 0xfdb70, SMBIOS rev. 2.0 @ 0xf0480 (24 entries) bios0: vendor American Megatrends Inc. version "063101" date 01/15/99 bios0: Supermicro Computer Intel 810 apm0 at bios0: Power Management spec V1.2 acpi at bios0 function 0x0 not configured pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000 pcibios0: PCI BIOS has 9 Interrupt Routing table entries pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801AA LPC" rev 0x00) pcibios0: PCI bus #1 is the last bus bios0: ROM list: 0xc0000/0x8000 cpu0 at mainbus0: (uniprocessor) pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 "Intel 82810E Host" rev 0x03 vga1 at pci0 dev 1 function 0 "Intel 82810E Video" rev 0x03 intagp0 at vga1 agp0 at intagp0: aperture at 0xec000000, size 0x4000000 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) ppb0 at pci0 dev 30 function 0 "Intel 82801AA Hub-to-PCI" rev 0x02 pci1 at ppb0 bus 1 rl0 at pci1 dev 0 function 0 "Realtek 8139" rev 0x10: irq 11, address 00:90:47:05:99:6d rlphy0 at rl0 phy 0: RTL internal PHY rl1 at pci1 dev 1 function 0 "Realtek 8139" rev 0x10: irq 10, address 00:90:47:05:30:e8 rlphy1 at rl1 phy 0: RTL internal PHY ichpcib0 at pci0 dev 31 function 0 "Intel 82801AA LPC" rev 0x02: 24-bit timer at 3579545Hz pciide0 at pci0 dev 31 function 1 "Intel 82801AA IDE" rev 0x02: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility wd0 at pciide0 channel 0 drive 0: <ST3250820A> wd0: 16-sector PIO, LBA48, 238475MB, 488397168 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 wd1 at pciide0 channel 1 drive 0: <Maxtor 5A320J0> wd1: 16-sector PIO, LBA48, 308921MB, 632672208 sectors wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 uhci0 at pci0 dev 31 function 2 "Intel 82801AA USB" rev 0x02: irq 5 ichiic0 at pci0 dev 31 function 3 "Intel 82801AA SMBus" rev 0x02: irq 10 iic0 at ichiic0 spdmem0 at iic0 addr 0x50: 256MB SDRAM non-parity PC133CL2 spdmem1 at iic0 addr 0x51: 256MB SDRAM non-parity PC133CL2 auich0 at pci0 dev 31 function 5 "Intel 82801AA AC97" rev 0x02: irq 10, ICH AC97 ac97: codec id 0x43525934 (Cirrus Logic CS4299 rev 4) ac97: codec features headphone, 20 bit DAC, 18 bit ADC, Crystal Semi 3D audio0 at auich0 isa0 at ichpcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com0: console com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 wbsio0 at isa0 port 0x2e/2: W83627HF rev 0x13 lm1 at wbsio0 port 0x290/8: W83627HF npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec usb0 at uhci0: USB revision 1.0 uhub0 at usb0 "Intel UHCI root hub" rev 1.00/1.00 addr 1 mtrr: Pentium Pro MTRR support vscsi0 at root scsibus0 at vscsi0: 256 targets softraid0 at root scsibus1 at softraid0: 256 targets root on wd0a (0e3aa2ac975978d6.a) swap on wd0b dump on wd0b WARNING: / was not properly unmounted