Description of problem: stop guest 60s, and then cont, check guest time after 10mins, guest timedrift around 70s. Version-Release number of selected component (if applicable): kvm-83-238.el5 How reproducible: 100% Steps to Reproduce: 1. cmd: /usr/libexec/qemu-kvm -monitor stdio -drive file=/mnt/images/RHEL-Server-5.7-64-virtio.qcow2,index=0,if=virtio,media=disk,cache=none,boot=on,format=qcow2 -net nic,vlan=0,model=virtio,macaddr=9a:ad:0f:27:a6:6f -net tap,vlan=0,ifname=t0-134040-cIy0,script=/mnt/scripts/qemu-ifup-switch,downscript=no -m 2048 -smp 4,cores=1,threads=1,sockets=4 -cpu qemu64,+sse2 -soundhw ac97 -vnc :0 -M rhel5.6.0 -boot c -usbdevice tablet -no-kvm-pit-reinjection -rtc-td-hack 2. cmdline ro root=/dev/VolGroup00/LogVol00 console=ttyS0,115200 console=tty0 3. 1). run ntpdate before stop ntpdate -d -q ns1.nay.redhat.com offset: -27.253621 2). stop guest (qemu)stop 3). sleep 60 4). cont guest (qemu) c 5). wait for 10mins 6). check time ntpdate -d -q ns1.nay.redhat.com offset:42.348616 timedrift: 70s Actual results: Expected results: Additional info: 1. host processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 107 model name : AMD Athlon(tm) Dual Core Processor 5400B stepping : 2 cpu MHz : 1000.000 cache size : 512 KB physical id : 0 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy misalignsse 2. guest rhel5.7-x86_64
Suqin, I am closing this bug since it is not severe enough for 5.8. However 1. I believe that you will be able to reproduce it on 6.2 2. I also believe that it is "as designed". Gleb, please comment. Thanks, Ronen.
(In reply to comment #1) > Suqin, > I am closing this bug since it is not severe enough for 5.8. However > 1. I believe that you will be able to reproduce it on 6.2 > 2. I also believe that it is "as designed". Gleb, please comment. That's not the question I can answer. You should ask someone who knows kvmclock better then me.