Hi, On Feb 19, 2013, at 10:54, Fleuriot Damien <ml_at_my.gd> wrote: > And indeed we find your answer here, acpi0 firing up a lot of interrupts. > > Don't you get any message about that in dmesg -a or /var/log/messages ? > > I'd expect something like "interrupt storm blabla… source throttled blabla.." nope. The only odd ACPI-related messages I see in dmesg are these: ACPI Error: [\134_SB_.PCI0.LPC0.BCMD] Namespace lookup failure, AE_NOT_FOUND (20130117/psargs-393) ACPI Error: Method parse/execution failed [\134_PR_.CPU0._OSC] (Node 0xfffffe0007630c00), AE_NOT_FOUND (20130117/psparse-560) ACPI Error: [\134_SB_.PCI0.LPC0.BCMD] Namespace lookup failure, AE_NOT_FOUND (20130117/psargs-393) ACPI Error: Method parse/execution failed [\134_PR_.CPU0._OSC] (Node 0xfffffe0007630c00), AE_NOT_FOUND (20130117/psparse-560) ACPI Error: Method parse/execution failed [\134_PR_.CPU0._PDC] (Node 0xfffffe0007630c40), AE_NOT_FOUND (20130117/psparse-560) Nothing in syslog. > From man 4 acpi , in /boot/loader.conf : > hint.acpi.0.disabled=1 > Set this to 1 to disable all of ACPI. If ACPI has been disabled > on your system due to a blacklist entry for your BIOS, you can > set this to 0 to re-enable ACPI for testing. > > Any chance you could reboot the host with ACPI disabled ? If I do that, I get an early kernel crash: Loading 10.11.12.13/~elars/kernel/kernel:0x200000/7634255 0xb47d50/473552 0xbbb720/890736 Entry at 0x802746f0 Closing network. Starting program at 0x802746f0 GDB: no debug ports present KDB: debugger backends: ddb KDB: current backend: ddb panic: running without device atpic requires a local APIC cpuid = 0 KDB: stack backtrace: kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x0 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff805c2973 stack pointer = 0x28:0xffffffff80c9a960 frame pointer = 0x28:0xffffffff80c9aa80 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = resume, IOPL = 0 current process = 0 () [ thread pid 0 tid 0 ] Stopped at 0xffffffff805c2973: movzbl (%rdi),%ecx > If that helps your CPU load, try setting this in /boot/loader.conf : > hw.acpi.verbose=1 > Turn on verbose debugging information about what ACPI is doing. Done, but it doesn't really result in any additional messages: # dmesg | grep -i acpi Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> ACPI APIC Table: <PTLTD CARNEGIE> acpi0: <PTLTD CARNEGIE> on motherboard acpi0: Power Button (fixed) cpu0: <ACPI CPU> on acpi0 ACPI Error: [\134_SB_.PCI0.LPC0.BCMD] Namespace lookup failure, AE_NOT_FOUND (20130117/psargs-393) ACPI Error: Method parse/execution failed [\134_PR_.CPU0._OSC] (Node 0xfffffe0007630c00), AE_NOT_FOUND (20130117/psparse-560) ACPI Error: [\134_SB_.PCI0.LPC0.BCMD] Namespace lookup failure, AE_NOT_FOUND (20130117/psargs-393) ACPI Error: Method parse/execution failed [\134_PR_.CPU0._OSC] (Node 0xfffffe0007630c00), AE_NOT_FOUND (20130117/psparse-560) ACPI Error: Method parse/execution failed [\134_PR_.CPU0._PDC] (Node 0xfffffe0007630c40), AE_NOT_FOUND (20130117/psparse-560) cpu1: <ACPI CPU> on acpi0 cpu2: <ACPI CPU> on acpi0 cpu3: <ACPI CPU> on acpi0 atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0 attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0 Timecounter "ACPI-fast" frequency 3579545 Hz quality 900 acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0 pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0 pci0: <ACPI PCI bus> on pcib0 pcib1: <ACPI PCI-PCI bridge> at device 2.0 on pci0 pci1: <ACPI PCI bus> on pcib1 pcib3: <ACPI PCI-PCI bridge> at device 4.0 on pci0 pci3: <ACPI PCI bus> on pcib3 pcib4: <ACPI PCI-PCI bridge> mem 0xdeb00000-0xdeb1ffff irq 16 at device 0.0 on pci3 pci4: <ACPI PCI bus> on pcib4 pcib7: <ACPI PCI-PCI bridge> irq 5 at device 8.0 on pci4 pci7: <ACPI PCI bus> on pcib7 pcib29: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0 pci29: <ACPI PCI bus> on pcib29 pcib30: <ACPI PCI-PCI bridge> irq 16 at device 28.4 on pci0 pci30: <ACPI PCI bus> on pcib30 pcib31: <ACPI PCI-PCI bridge> irq 17 at device 28.5 on pci0 pci31: <ACPI PCI bus> on pcib31 pcib32: <ACPI PCI-PCI bridge> at device 30.0 on pci0 pci32: <ACPI PCI bus> on pcib32 acpi_button0: <Power Button> on acpi0 uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 uart1: <16550 or compatible> port 0x2f8-0x2ff irq 3 on acpi0 LarsReceived on Tue Feb 19 2013 - 09:16:56 UTC
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