Le 04/06/2012 ? 06:22:34+0930, Matt Thyer a écrit
>
Hi,
> Is this due to a high rate of interrupts ?
No idea ;-)
> i.e. can you see this with "systat -vm 1" with a large number in the "intr"
> field.
Well I don't known what you mean by «high rate», so I make a compraison
between my desktop and my laptop.
On the laptop (where the load is always high) I got
~500- 650 total Interrupts with ~490-500 from hpet0 uhci
On my desktop (load is ~0) I got
~340- 360 total Interrupts with 320-350 from hpet0 20
>
> If yes, run "vmstat -i" to see what interrupt is being hit.
On my laptop (uptime ~ 1h):
vmstat -i
interrupt total rate
irq1: atkbd0 7240 1
irq9: acpi0 7 0
irq12: psm0 44037 10
irq14: ata0 6590 1
irq17: wpi0 683770 155
irq18: atapci1 15447 3
irq19: fwohci0 2 0
irq20: hpet0 uhci0* 2888037 656
irq22: ehci0 uhci4 2 0
irq256: hdac0 270090 61
Total 3915222 890
On my destkop (uptime 5 days)
interrupt total rate
irq1: atkbd0 239742 0
irq12: psm0 999224 2
irq16: uhci0 4062873 9
irq17: fwohci0++ 1 0
irq20: hpet0 222779529 500
irq22: uhci2 ehci0 222967 0
irq24: vgapci0 972589 2
irq256: hdac0 9881473 22
irq257: bge0 8422313 18
irq258: ahci0 5744209 12
Total 253324920 568
>
> Then tell us what hardware is on that irq (from grep irq /var/run/dmesg.boot).
Here on the laptop:
grep irq /var/run/dmesg.boot
ioapic0 <Version 2.0> irqs 0-23 on motherboard
atrtc0: <AT realtime clock> port 0x70-0x71,0x72-0x77 irq 8 on acpi0
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 2 on acpi0
vgapci0: <VGA-compatible display> port 0xdf00-0xdf7f mem
0xf5000000-0xf5ffffff,0xe0000000-0xefffffff,0xf2000000-0xf3ffffff irq 16 at
device 0.0 on pci1
uhci0: <Intel 82801H (ICH8) USB controller USB-D> port 0x6f20-0x6f3f irq 20 at
device 26.0 on pci0
uhci1: <Intel 82801H (ICH8) USB controller USB-E> port 0x6f00-0x6f1f irq 21 at
device 26.1 on pci0
ehci0: <Intel 82801H (ICH8) USB 2.0 controller USB2-B> mem
0xfed1c400-0xfed1c7ff irq 22 at device 26.7 on pci0
hdac0: <Intel 82801H HDA Controller> mem 0xf6ffc000-0xf6ffffff irq 21 at device
27.0 on pci0
wpi0: <Intel(R) PRO/Wireless 3945ABG> mem 0xf1fff000-0xf1ffffff irq 17 at
device 0.0 on pci12
bge0: <Broadcom NetXtreme Gigabit Ethernet Controller, ASIC rev. 0x00a200>
mem 0xf1bf0000-0xf1bfffff irq 17 at device 0.0 on pci9
uhci2: <Intel 82801H (ICH8) USB controller USB-A> port 0x6f80-0x6f9f irq 20 at
device 29.0 on pci0
uhci3: <Intel 82801H (ICH8) USB controller USB-B> port 0x6f60-0x6f7f irq 21 at
device 29.1 on pci0
uhci4: <Intel 82801H (ICH8) USB controller USB-C> port 0x6f40-0x6f5f irq 22 at
device 29.2 on pci0
ehci1: <Intel 82801H (ICH8) USB 2.0 controller USB2-A> mem
0xfed1c000-0xfed1c3ff irq 20 at device 29.7 on pci0
fwohci0: <1394 Open Host Controller Interface> mem 0xf1aff800-0xf1afffff irq 19
at device 1.0 on pci3
atapci0: <Intel ICH8M UDMA100 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x6fa0-0x6faf irq 16 at device 31.1 on pci0
atapci1: <Intel ICH8M SATA300 controller> port
0x6eb0-0x6eb7,0x6eb8-0x6ebb,0x6ec0-0x6ec7,0x6ec8-0x6ecb,0x6ee0-0x6eef,0xeff0-0xefff
irq 18 at device 31.2 on pci0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64,0x62,0x66 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
Regards.
JAS
--
Albert SHIH
DIO bâtiment 15
Observatoire de Paris
5 Place Jules Janssen
92195 Meudon Cedex
Téléphone : 01 45 07 76 26/06 86 69 95 71
xmpp: j...@jabber.obspm.fr
Heure local/Local time:
mar 5 jui 2012 21:38:47 CEST
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