[ kvm-Bugs-2801212 ] sles10sp2 guest timer run too fast

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Bugs item #2801212, was opened at 2009-06-04 23:17
Message generated for change (Comment added) made by haoxudong
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Jiajun Xu (jiajun)
Assigned to: Marcelo Tosatti (mtosatti)
Summary: sles10sp2 guest timer run too fast 

Initial Comment:
With kvm.git Commit:7ff90748cebbfbafc8cfa6bdd633113cd9537789
qemu-kvm Commit:a1cd3c985c848dae73966f9601f15fbcade72f1, we found that sles10sp2 will run much faster than real, about 27s faster each after 60s real time.

Reproduce steps:
----------------
(1)qemu-system-x86_64  -m 1024 -net nic,macaddr=00:16:3e:6f:f3:d1,model=rtl8139 -net tap,script=/etc/kvm/qemu-ifup -hda /share/xvs/var/sles10sp2.img
(2)Run ntpdate in guest: ntpdate sync_machine_ip && sleep 60 && ntpdate sync_machine_ip

Current result:
----------------
sles10sp2rc1-guest:~ #  ntpdate sync_machine_ip && sleep 60 && ntpdate sync_machine_ip
31 May 23:16:59 ntpdate[3303]: step time server 192.168.198.248 offset
-61.27418                                    
31 May 23:17:32 ntpdate[3305]: step time server 192.168.198.248 offset
-27.626469 sec

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Comment By: Xudong Hao (haoxudong)
Date: 2009-11-27 16:02

Message:
Sles10sp2 guest can get accurate time on the latest commit:
kvm: 5e8cb552cb8b48244b6d07bff984b3c4080d4bc9
qemu-kvm: 48bb360cc687b89b74dfb1cac0f6e8812b64841c



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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2801212&group_id=180599