eventtimers hiccups

[Stefan Farfeleder]

Hi,

since the new eventtimers code was committed, my notebook (Dell
Precision m4400) sometimes hangs for 10-30 seconds, mostly during load.
In these periods I can move the mouse pointer but time (as perceived by
time(1)) seems to be halted. This is accompanied by lots of calcru:
runtime went backwards message, though sometimes they only show up when
shutting down.

I now set kern.eventtimer.periodic=1 and have not experienced such
freezes since then. But it would be nice if the default settigs would
work. Is there something I could do to help fixing this?
BTW, I'm not using powerd.

sysctl kern.eventtimer gives this output:
kern.eventtimer.choice: HPET(450) HPET1(440) HPET2(440) HPET3(440) LAPIC(400) i8254(100) RTC(0)
kern.eventtimer.et.LAPIC.flags: 15
kern.eventtimer.et.LAPIC.frequency: 0
kern.eventtimer.et.LAPIC.quality: 400
kern.eventtimer.et.HPET.flags: 3
kern.eventtimer.et.HPET.frequency: 14318180
kern.eventtimer.et.HPET.quality: 450
kern.eventtimer.et.HPET1.flags: 3
kern.eventtimer.et.HPET1.frequency: 14318180
kern.eventtimer.et.HPET1.quality: 440
kern.eventtimer.et.HPET2.flags: 3
kern.eventtimer.et.HPET2.frequency: 14318180
kern.eventtimer.et.HPET2.quality: 440
kern.eventtimer.et.HPET3.flags: 3
kern.eventtimer.et.HPET3.frequency: 14318180
kern.eventtimer.et.HPET3.quality: 440
kern.eventtimer.et.RTC.flags: 17
kern.eventtimer.et.RTC.frequency: 32768
kern.eventtimer.et.RTC.quality: 0
kern.eventtimer.et.i8254.flags: 1
kern.eventtimer.et.i8254.frequency: 1193182
kern.eventtimer.et.i8254.quality: 100
kern.eventtimer.periodic: 1
kern.eventtimer.timer: HPET
kern.eventtimer.idletick: 0
kern.eventtimer.singlemul: 2

Cheers,
Stefan
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FreeBSD 9.0-CURRENT #41 r216198: Sun Dec  5 14:02:37 CET 2010
    stefan at mole.fafoe.narf.at:/usr/obj/usr/src/sys/MOLE amd64
CPU: Intel(R) Core(TM)2 Duo CPU     T9600  @ 2.80GHz (2793.06-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x1067a  Family = 6  Model = 17  Stepping = 10
  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>
  Features2=0x408e3fd<SSE3,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,XSAVE>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant
real memory  = 4294967296 (4096 MB)
avail memory = 4036313088 (3849 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <DELL   M09    >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s)
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ioapic0: Changing APIC ID to 2
ioapic0 <Version 2.0> irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: <DELL M09    > on motherboard
Timecounter "HPET" frequency 14318180 Hz quality 900
Event timer "HPET" frequency 14318180 Hz quality 450
Event timer "HPET1" frequency 14318180 Hz quality 440
Event timer "HPET2" frequency 14318180 Hz quality 440
Event timer "HPET3" frequency 14318180 Hz quality 440
acpi0: reservation of 0, 9f000 (3) failed
acpi0: reservation of 100000, df351c00 (3) failed
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
acpi_ec0: <Embedded Controller: GPE 0x11> port 0x930,0x934 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 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0xdf00-0xdf7f mem 0xf5000000-0xf5ffffff,0xe0000000-0xefffffff,0xf2000000-0xf3ffffff irq 16 at device 0.0 on pci1
pci0: <simple comms> at device 3.0 (no driver attached)
atapci0: <Intel ATA controller> port 0xef78-0xef7f,0xef70-0xef73,0xef80-0xef87,0xef74-0xef77,0xef90-0xef9f irq 18 at device 3.2 on pci0
ata2: <ATA channel 0> on atapci0
ata3: <ATA channel 1> on atapci0
pci0: <simple comms, UART> at device 3.3 (no driver attached)
em0: <Intel(R) PRO/1000 Network Connection 7.1.8> port 0xefe0-0xefff mem 0xf6fe0000-0xf6ffffff,0xf6fdb000-0xf6fdbfff irq 22 at device 25.0 on pci0
em0: Using an MSI interrupt
em0: Ethernet address: 00:24:e8:e4:17:93
uhci0: <Intel 82801I (ICH9) USB controller> port 0x6f60-0x6f7f irq 20 at device 26.0 on pci0
usbus0: <Intel 82801I (ICH9) USB controller> on uhci0
uhci1: <Intel 82801I (ICH9) USB controller> port 0x6f80-0x6f9f irq 21 at device 26.1 on pci0
usbus1: <Intel 82801I (ICH9) USB controller> on uhci1
uhci2: <Intel 82801I (ICH9) USB controller> port 0x6fa0-0x6fbf irq 22 at device 26.2 on pci0
usbus2: <Intel 82801I (ICH9) USB controller> on uhci2
ehci0: <Intel 82801I (ICH9) USB 2.0 controller> mem 0xfed1c400-0xfed1c7ff irq 22 at device 26.7 on pci0
usbus3: EHCI version 1.0
usbus3: <Intel 82801I (ICH9) USB 2.0 controller> on ehci0
hdac0: <Intel 82801I High Definition Audio Controller> mem 0xf6fdc000-0xf6fdffff irq 21 at device 27.0 on pci0
hdac0: HDA Driver Revision: 20100226_0142
pcib2: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci11: <ACPI PCI bus> on pcib2
pcib3: <ACPI PCI-PCI bridge> at device 28.1 on pci0
pci12: <ACPI PCI bus> on pcib3
iwn0: <Intel(R) PRO/Wireless 5100> mem 0xf1ffe000-0xf1ffffff irq 17 at device 0.0 on pci12
iwn0: MIMO 1T2R, MoW, address xx:xx:xx:xx:xx:xx
iwn0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
iwn0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
iwn0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
pcib4: <ACPI PCI-PCI bridge> at device 28.2 on pci0
pci13: <ACPI PCI bus> on pcib4
pcib5: <ACPI PCI-PCI bridge> at device 28.3 on pci0
pci14: <ACPI PCI bus> on pcib5
uhci3: <Intel 82801I (ICH9) USB controller> port 0x6f00-0x6f1f irq 20 at device 29.0 on pci0
usbus4: <Intel 82801I (ICH9) USB controller> on uhci3
uhci4: <Intel 82801I (ICH9) USB controller> port 0x6f20-0x6f3f irq 21 at device 29.1 on pci0
usbus5: <Intel 82801I (ICH9) USB controller> on uhci4
uhci5: <Intel 82801I (ICH9) USB controller> port 0x6f40-0x6f5f irq 22 at device 29.2 on pci0
usbus6: <Intel 82801I (ICH9) USB controller> on uhci5
ehci1: <Intel 82801I (ICH9) USB 2.0 controller> mem 0xfed1c000-0xfed1c3ff irq 20 at device 29.7 on pci0
usbus7: EHCI version 1.0
usbus7: <Intel 82801I (ICH9) USB 2.0 controller> on ehci1
pcib6: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci3: <ACPI PCI bus> on pcib6
cbb0: <RF5C476 PCI-CardBus Bridge> irq 19 at device 1.0 on pci3
cardbus0: <CardBus bus> on cbb0
pccard0: <16-bit PCCard bus> on cbb0
cbb0: Bad Vcc requested
fwohci0: <1394 Open Host Controller Interface> mem 0xf1bff800-0xf1bfffff irq 17 at device 1.1 on pci3
fwohci0: OHCI version 1.10 (ROM=0)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 38:4f:c0:00:2a:55:44:90
fwohci0: Phy 1394a available S400, 1 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
dcons_crom0: <dcons configuration ROM> on firewire0
dcons_crom0: bus_addr 0xd6e88000
fwohci0: Initiate bus reset
fwohci0: fwohci_intr_core: BUS reset
fwohci0: fwohci_intr_core: node_id=0x00000000, SelfID Count=1, CYCLEMASTER mode
sdhci0: <RICOH R5C822 SD> mem 0xf1bff600-0xf1bff6ff irq 18 at device 1.2 on pci3
sdhci0: 1 slot(s) allocated
pci3: <base peripheral> at device 1.3 (no driver attached)
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci1: <Intel ICH8M SATA300 controller> port 0x6e70-0x6e77,0x6e78-0x6e7b,0x6e80-0x6e87,0x6e88-0x6e8b,0x6ea0-0x6ebf mem 0xfed1c800-0xfed1cfff irq 19 at device 31.2 on pci0
atapci1: AHCI called from vendor specific driver
atapci1: AHCI v1.20 controller with 4 3Gbps ports, PM supported
ata4: <ATA channel 0> on atapci1
ata5: <ATA channel 1> on atapci1
ata6: <ATA channel 4> on atapci1
ata7: <ATA channel 5> on atapci1
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
acpi_lid0: <Control Method Lid Switch> on acpi0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
acpi_acad0: <AC Adapter> on acpi0
battery0: <ACPI Control Method Battery> on acpi0
battery1: <ACPI Control Method Battery> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64,0x62,0x66 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model GlidePoint, device ID 0
atrtc0: <AT realtime clock> port 0x70-0x71,0x72-0x77 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 2 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
orm0: <ISA Option ROMs> at iomem 0xc0000-0xce7ff,0xce800-0xd37ff,0xd3800-0xd3fff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
coretemp0: <CPU On-Die Thermal Sensors> on cpu0
est0: <Enhanced SpeedStep Frequency Control> on cpu0
p4tcc0: <CPU Frequency Thermal Control> on cpu0
coretemp1: <CPU On-Die Thermal Sensors> on cpu1
est1: <Enhanced SpeedStep Frequency Control> on cpu1
p4tcc1: <CPU Frequency Thermal Control> on cpu1
Timecounters tick every 1.000 msec
firewire0: 1 nodes, maxhop <= 0 cable IRM irm(0)  (me) 
firewire0: bus manager 0 
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 12Mbps Full Speed USB v1.0
usbus2: 12Mbps Full Speed USB v1.0
usbus3: 480Mbps High Speed USB v2.0
usbus4: 12Mbps Full Speed USB v1.0
usbus5: 12Mbps Full Speed USB v1.0
usbus6: 12Mbps Full Speed USB v1.0
usbus7: 480Mbps High Speed USB v2.0
ugen0.1: <Intel> at usbus0
uhub0: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen1.1: <Intel> at usbus1
uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ugen2.1: <Intel> at usbus2
uhub2: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
ugen3.1: <Intel> at usbus3
uhub3: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus3
ugen4.1: <Intel> at usbus4
uhub4: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus4
ugen5.1: <Intel> at usbus5
uhub5: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus5
ugen6.1: <Intel> at usbus6
uhub6: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus6
ugen7.1: <Intel> at usbus7
uhub7: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus7
ad8: 305245MB <WDC WD3200BJKT-75F4T0 11.01A11> at ata4-master UDMA100 SATA 3Gb/s
acd0: DVDR <TSSTcorp DVD+/-RW TS-U633F/D300> at ata5-master UDMA100 SATA 1.5Gb/s
hdac0: HDA Codec #0: IDT 92HD71B7
pcm0: <HDA IDT 92HD71B7 PCM #0 Analog> at cad 0 nid 1 on hdac0
pcm1: <HDA IDT 92HD71B7 PCM #1 Analog> at cad 0 nid 1 on hdac0
pcm2: <HDA IDT 92HD71B7 PCM #2 Digital> at cad 0 nid 1 on hdac0
SMP: AP CPU #1 Launched!
GEOM: ad8: partition 4 does not start on a track boundary.
GEOM: ad8: partition 4 does not end on a track boundary.
GEOM: ad8: partition 3 does not start on a track boundary.
GEOM: ad8: partition 3 does not end on a track boundary.
GEOM: ad8: partition 2 does not start on a track boundary.
GEOM: ad8: partition 2 does not end on a track boundary.
Root mount waiting for: usbus7 usbus6 usbus5 usbus4 usbus3 usbus2 usbus1 usbus0
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
uhub2: 2 ports with 2 removable, self powered
uhub4: 2 ports with 2 removable, self powered
uhub5: 2 ports with 2 removable, self powered
uhub6: 2 ports with 2 removable, self powered
Root mount waiting for: usbus7 usbus3
Root mount waiting for: usbus7 usbus3
uhub3: 6 ports with 6 removable, self powered
uhub7: 6 ports with 6 removable, self powered
Root mount waiting for: usbus3
Trying to mount root from ufs:/dev/ad8s4a [rw]...
ugen0.2: <Broadcom> at usbus0
uhub8: <Broadcom BCM2046B1, class 9/0, rev 2.00/1.00, addr 2> on usbus0
uhub8: 3 ports with 0 removable, self powered
ugen2.2: <Broadcom Corp> at usbus2
ugen0.3: <vendor 0x413c> at usbus0
ugen0.4: <vendor 0x413c> at usbus0
ums0: <vendor 0x413c product 0x8158, class 0/0, rev 2.00/1.00, addr 4> on usbus0
ums0: 3 buttons and [XY] coordinates ID=2
wlan0: Ethernet address: xx:xx:xx:xx:xx:xx