Avi Kivity schrieb:
Tomasz Chmielewski wrote:
It was kvm-clock.
I tried changing it to acpi_pm, jiffies, tsc, but it made no difference.
Actually, I don't think that I checked tsc, because when I changed to
jiffies, the time has stopped:
# echo jiffies >
/sys/devices/system/clocksource/clocksource0/current_clocksource
# date
Mon Mar 9 12:29:00 CET 2009
# date
Mon Mar 9 12:29:00 CET 2009
# date
Mon Mar 9 12:29:00 CET 2009
can you post some /proc/interrupt dumps from the guest? I guess the
timer interrupt isn't working.
We're touching another issue from my original one ("guest slowness")
here, I suppose.
But there are new interrupts here, when I set the clocksource to
"jiffies" (setting to "jiffies" also kills my serial console connection
- no key press go through to the guest any more):
# cat /proc/interrupts
CPU0
0: 104 IO-APIC-edge timer
1: 6 IO-APIC-edge i8042
4: 480 IO-APIC-edge serial
6: 2 IO-APIC-edge floppy
7: 0 IO-APIC-edge parport0
8: 2 IO-APIC-edge rtc0
9: 0 IO-APIC-fasteoi acpi
10: 4400 IO-APIC-fasteoi virtio0, virtio2, virtio4
11: 1550 IO-APIC-fasteoi uhci_hcd:usb1, virtio1, virtio3
12: 89 IO-APIC-edge i8042
14: 0 IO-APIC-edge ide0
15: 30 IO-APIC-edge ide1
NMI: 0 Non-maskable interrupts
LOC: 85231 Local timer interrupts
RES: 0 Rescheduling interrupts
CAL: 0 function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
SPU: 0 Spurious interrupts
ERR: 0
MIS: 0
# cat /proc/interrupts
CPU0
0: 104 IO-APIC-edge timer
1: 6 IO-APIC-edge i8042
4: 486 IO-APIC-edge serial
6: 2 IO-APIC-edge floppy
7: 0 IO-APIC-edge parport0
8: 2 IO-APIC-edge rtc0
9: 0 IO-APIC-fasteoi acpi
10: 4461 IO-APIC-fasteoi virtio0, virtio2, virtio4
11: 1590 IO-APIC-fasteoi uhci_hcd:usb1, virtio1, virtio3
12: 89 IO-APIC-edge i8042
14: 0 IO-APIC-edge ide0
15: 30 IO-APIC-edge ide1
NMI: 0 Non-maskable interrupts
LOC: 108361 Local timer interrupts
RES: 0 Rescheduling interrupts
CAL: 0 function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
SPU: 0 Spurious interrupts
ERR: 0
MIS: 0
Does -no-kvm-irqchip help?
Nope, it doesn't - with jiffies, time always stops.
--
Tomasz Chmielewski
http://wpkg.org
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