[Xen-devel] Timer ISR Errors

["Jörg Sippel" <jsippel@xxxxxxxxxxxxxxx>]

Hello,

I'm currently trying out xen and everything works fine but there are errors in 
the System Logs of both Systems (Domain0 and 2nd)

Log entries Domain-0:
...
...
Aug  8 06:25:13 localhost kernel: Timer ISR: Time went backwards: -9675000 
223563970000000 326000 223563980000000
Aug  8 06:25:20 localhost kernel: Timer ISR: Time went backwards: -9660000 
223570780000000 340000 223570790000000
Aug  8 06:25:21 localhost kernel: Timer ISR: Time went backwards: -9777000 
223571040000000 224000 223571050000000
Aug  8 06:25:21 localhost kernel: Timer ISR: Time went backwards: -9761000 
223571490000000 239000 223571500000000
Aug  8 06:25:26 localhost kernel: Timer ISR: Time went backwards: -9693000 
223576930000000 307000 223576940000000
Aug  8 06:25:40 localhost kernel: Timer ISR: Time went backwards: -7024000 
223590560000000 2977000 223590570000000
Aug  8 08:46:33 localhost kernel: Timer ISR: Time went backwards: -8227000 
232043950000000 1773000 232043960000000
Aug  8 10:22:13 localhost kernel: Timer ISR: Time went backwards: -3000 
237783500000000 9997000 237783510000000
Aug  8 10:42:50 localhost kernel: Timer ISR: Time went backwards: -3000 
239020900000000 9997000 239020910000000
Aug  8 15:07:16 localhost kernel: Timer ISR: Time went backwards: -8509000 
254886980000000 1492000 254886990000000

Log entries 2nd System:

Aug  7 15:04:02 SC43002 kernel: Timer ISR: Time went backwards: -6503000
Aug  7 15:45:31 SC43002 kernel: Timer ISR: Time went backwards: -8854000
Aug  7 19:28:03 SC43002 kernel: Timer ISR: Time went backwards: -9821000
Aug  7 19:46:16 SC43002 kernel: Timer ISR: Time went backwards: -9000
Aug  7 21:59:58 SC43002 kernel: Timer ISR: Time went backwards: -8787000
Aug  8 03:00:20 SC43002 kernel: Timer ISR: Time went backwards: -9832000
Aug  8 11:28:01 SC43002 kernel: Timer ISR: Time went backwards: -9725000
Aug  8 14:19:13 SC43002 kernel: Timer ISR: Time went backwards: -9798000

Are these log entries important? Can anybody help me with that? What is wrong?

I'm using xen-2.0.7 ond Debian 3.1
Kernel on Domain0: 2.6.11.12
Kernel on 2nd System: 2.4.30

Regards,

Joerg Sippel




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