[Qemu-devel] [Bug 1086782] Re: HPET time drift windows 7 64bits guest
I have this problem with Ubuntu 18.04 -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1086782 Title: HPET time drift windows 7 64bits guest Status in QEMU: Expired Bug description: Using latest qemu-kvm (1.2.0), time drift (clock slow in guest) in Windows 7 64 bits guest when HPET is enabled (default). Disabling HPET (-no-hpet) solves the time drift. UsePlatformClock enable/disable doesn't make a difference in the guest. bcdedit /set useplatformclock true Using driftfix slew doesn't make a difference too. # qemu-system-x86_64 --version QEMU emulator version 1.2.0 (qemu-kvm-1.2.0), Copyright (c) 2003-2008 Fabrice Bellard Kernel is 3.6.8: # uname -a Linux pulsar 3.6.8 #1 SMP Sat Dec 1 16:26:10 CET 2012 x86_64 x86_64 x86_64 GNU/Linux TSC is stable in the host: === # cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc Dmesg: [0.00] hpet clockevent registered [0.00] tsc: Fast TSC calibration using PIT [0.00] tsc: Detected 2660.096 MHz processor [0.001002] Calibrating delay loop (skipped), value calculated using timer frequency.. 5320.19 BogoMIPS (lpj=2660096) [0.001138] pid_max: default: 32768 minimum: 301 ... [1.492019] tsc: Refined TSC clocksource calibration: 2659.973 MHz [1.492093] Switching to clocksource tsc CPUinfo, constant_tsc: vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPUQ8400 @ 2.66GHz stepping: 10 microcode : 0xa0b cpu MHz : 2667.000 cache size : 2048 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority bogomips: 5320.19 # grep -i hpet .config CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y CONFIG_HPET=y # CONFIG_HPET_MMAP is not set === Qemu command line: /usr/bin/qemu-system-x86_64 -drive file=/dev/vol0/KVMORION01,cache=none,aio=native,if=virtio \ -drive file=/dev/vol0/KVMORION02,cache=none,aio=native,if=virtio \ -cpu host \ -m 2048 \ -smp 4,maxcpus=4,cores=4,threads=1,sockets=1 \ -rtc base=localtime,driftfix=slew \ -vnc 10.124.241.211:0,password -k es \ -monitor telnet:localhost:37200,server,nowait \ -netdev tap,id=kvmorion,ifname=kvmorion,script=/etc/qemu-ifup-br0,downscript=/etc/qemu-ifdown-br0 \ -device virtio-net-pci,netdev=kvmorion,id=virtio-nic0,mac=02:85:64:02:c2:aa \ -device virtio-balloon-pci,id=balloon0 \ -boot menu=on \ -pidfile /var/run/kvmorion.pid \ -daemonize Using 1 CPU doesn't make a difference. Only workaround is disabling hpet (-no-hpet) Sample time drift in guest: >ntpdate -q 10.124.241.211 5 Dec 13:36:06 ntpdate[3464]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 3.694184, delay 0.02551 5 Dec 13:36:12 ntpdate[3464]: step time server 10.124.241.211 offset 3.694184 s ec >ntpdate -q 10.124.241.211 5 Dec 13:52:02 ntpdate[1964]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 4.719968, delay 0.02554 5 Dec 13:52:08 ntpdate[1964]: step time server 10.124.241.211 offset 4.719968 s ec To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1086782/+subscriptions
[Qemu-devel] [Bug 1086782] Re: HPET time drift windows 7 64bits guest
[Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete => Expired -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1086782 Title: HPET time drift windows 7 64bits guest Status in QEMU: Expired Bug description: Using latest qemu-kvm (1.2.0), time drift (clock slow in guest) in Windows 7 64 bits guest when HPET is enabled (default). Disabling HPET (-no-hpet) solves the time drift. UsePlatformClock enable/disable doesn't make a difference in the guest. bcdedit /set useplatformclock true Using driftfix slew doesn't make a difference too. # qemu-system-x86_64 --version QEMU emulator version 1.2.0 (qemu-kvm-1.2.0), Copyright (c) 2003-2008 Fabrice Bellard Kernel is 3.6.8: # uname -a Linux pulsar 3.6.8 #1 SMP Sat Dec 1 16:26:10 CET 2012 x86_64 x86_64 x86_64 GNU/Linux TSC is stable in the host: === # cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc Dmesg: [0.00] hpet clockevent registered [0.00] tsc: Fast TSC calibration using PIT [0.00] tsc: Detected 2660.096 MHz processor [0.001002] Calibrating delay loop (skipped), value calculated using timer frequency.. 5320.19 BogoMIPS (lpj=2660096) [0.001138] pid_max: default: 32768 minimum: 301 ... [1.492019] tsc: Refined TSC clocksource calibration: 2659.973 MHz [1.492093] Switching to clocksource tsc CPUinfo, constant_tsc: vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPUQ8400 @ 2.66GHz stepping: 10 microcode : 0xa0b cpu MHz : 2667.000 cache size : 2048 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority bogomips: 5320.19 # grep -i hpet .config CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y CONFIG_HPET=y # CONFIG_HPET_MMAP is not set === Qemu command line: /usr/bin/qemu-system-x86_64 -drive file=/dev/vol0/KVMORION01,cache=none,aio=native,if=virtio \ -drive file=/dev/vol0/KVMORION02,cache=none,aio=native,if=virtio \ -cpu host \ -m 2048 \ -smp 4,maxcpus=4,cores=4,threads=1,sockets=1 \ -rtc base=localtime,driftfix=slew \ -vnc 10.124.241.211:0,password -k es \ -monitor telnet:localhost:37200,server,nowait \ -netdev tap,id=kvmorion,ifname=kvmorion,script=/etc/qemu-ifup-br0,downscript=/etc/qemu-ifdown-br0 \ -device virtio-net-pci,netdev=kvmorion,id=virtio-nic0,mac=02:85:64:02:c2:aa \ -device virtio-balloon-pci,id=balloon0 \ -boot menu=on \ -pidfile /var/run/kvmorion.pid \ -daemonize Using 1 CPU doesn't make a difference. Only workaround is disabling hpet (-no-hpet) Sample time drift in guest: >ntpdate -q 10.124.241.211 5 Dec 13:36:06 ntpdate[3464]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 3.694184, delay 0.02551 5 Dec 13:36:12 ntpdate[3464]: step time server 10.124.241.211 offset 3.694184 s ec >ntpdate -q 10.124.241.211 5 Dec 13:52:02 ntpdate[1964]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 4.719968, delay 0.02554 5 Dec 13:52:08 ntpdate[1964]: step time server 10.124.241.211 offset 4.719968 s ec To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1086782/+subscriptions
[Qemu-devel] [Bug 1086782] Re: HPET time drift windows 7 64bits guest
Running from 6 days, here are my results. There is still some time drift but not critical. Windows 7 guest is behind around 30 seconds in 6 days. This can be corrected by using NTP. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1086782 Title: HPET time drift windows 7 64bits guest Status in QEMU: Incomplete Bug description: Using latest qemu-kvm (1.2.0), time drift (clock slow in guest) in Windows 7 64 bits guest when HPET is enabled (default). Disabling HPET (-no-hpet) solves the time drift. UsePlatformClock enable/disable doesn't make a difference in the guest. bcdedit /set useplatformclock true Using driftfix slew doesn't make a difference too. # qemu-system-x86_64 --version QEMU emulator version 1.2.0 (qemu-kvm-1.2.0), Copyright (c) 2003-2008 Fabrice Bellard Kernel is 3.6.8: # uname -a Linux pulsar 3.6.8 #1 SMP Sat Dec 1 16:26:10 CET 2012 x86_64 x86_64 x86_64 GNU/Linux TSC is stable in the host: === # cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc Dmesg: [0.00] hpet clockevent registered [0.00] tsc: Fast TSC calibration using PIT [0.00] tsc: Detected 2660.096 MHz processor [0.001002] Calibrating delay loop (skipped), value calculated using timer frequency.. 5320.19 BogoMIPS (lpj=2660096) [0.001138] pid_max: default: 32768 minimum: 301 ... [1.492019] tsc: Refined TSC clocksource calibration: 2659.973 MHz [1.492093] Switching to clocksource tsc CPUinfo, constant_tsc: vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPUQ8400 @ 2.66GHz stepping: 10 microcode : 0xa0b cpu MHz : 2667.000 cache size : 2048 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority bogomips: 5320.19 # grep -i hpet .config CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y CONFIG_HPET=y # CONFIG_HPET_MMAP is not set === Qemu command line: /usr/bin/qemu-system-x86_64 -drive file=/dev/vol0/KVMORION01,cache=none,aio=native,if=virtio \ -drive file=/dev/vol0/KVMORION02,cache=none,aio=native,if=virtio \ -cpu host \ -m 2048 \ -smp 4,maxcpus=4,cores=4,threads=1,sockets=1 \ -rtc base=localtime,driftfix=slew \ -vnc 10.124.241.211:0,password -k es \ -monitor telnet:localhost:37200,server,nowait \ -netdev tap,id=kvmorion,ifname=kvmorion,script=/etc/qemu-ifup-br0,downscript=/etc/qemu-ifdown-br0 \ -device virtio-net-pci,netdev=kvmorion,id=virtio-nic0,mac=02:85:64:02:c2:aa \ -device virtio-balloon-pci,id=balloon0 \ -boot menu=on \ -pidfile /var/run/kvmorion.pid \ -daemonize Using 1 CPU doesn't make a difference. Only workaround is disabling hpet (-no-hpet) Sample time drift in guest: >ntpdate -q 10.124.241.211 5 Dec 13:36:06 ntpdate[3464]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 3.694184, delay 0.02551 5 Dec 13:36:12 ntpdate[3464]: step time server 10.124.241.211 offset 3.694184 s ec >ntpdate -q 10.124.241.211 5 Dec 13:52:02 ntpdate[1964]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 4.719968, delay 0.02554 5 Dec 13:52:08 ntpdate[1964]: step time server 10.124.241.211 offset 4.719968 s ec To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1086782/+subscriptions
[Qemu-devel] [Bug 1086782] Re: HPET time drift windows 7 64bits guest
Testing now with qemu 2.10.1 Will need 1 day to see drift or not -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1086782 Title: HPET time drift windows 7 64bits guest Status in QEMU: Incomplete Bug description: Using latest qemu-kvm (1.2.0), time drift (clock slow in guest) in Windows 7 64 bits guest when HPET is enabled (default). Disabling HPET (-no-hpet) solves the time drift. UsePlatformClock enable/disable doesn't make a difference in the guest. bcdedit /set useplatformclock true Using driftfix slew doesn't make a difference too. # qemu-system-x86_64 --version QEMU emulator version 1.2.0 (qemu-kvm-1.2.0), Copyright (c) 2003-2008 Fabrice Bellard Kernel is 3.6.8: # uname -a Linux pulsar 3.6.8 #1 SMP Sat Dec 1 16:26:10 CET 2012 x86_64 x86_64 x86_64 GNU/Linux TSC is stable in the host: === # cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc Dmesg: [0.00] hpet clockevent registered [0.00] tsc: Fast TSC calibration using PIT [0.00] tsc: Detected 2660.096 MHz processor [0.001002] Calibrating delay loop (skipped), value calculated using timer frequency.. 5320.19 BogoMIPS (lpj=2660096) [0.001138] pid_max: default: 32768 minimum: 301 ... [1.492019] tsc: Refined TSC clocksource calibration: 2659.973 MHz [1.492093] Switching to clocksource tsc CPUinfo, constant_tsc: vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPUQ8400 @ 2.66GHz stepping: 10 microcode : 0xa0b cpu MHz : 2667.000 cache size : 2048 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority bogomips: 5320.19 # grep -i hpet .config CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y CONFIG_HPET=y # CONFIG_HPET_MMAP is not set === Qemu command line: /usr/bin/qemu-system-x86_64 -drive file=/dev/vol0/KVMORION01,cache=none,aio=native,if=virtio \ -drive file=/dev/vol0/KVMORION02,cache=none,aio=native,if=virtio \ -cpu host \ -m 2048 \ -smp 4,maxcpus=4,cores=4,threads=1,sockets=1 \ -rtc base=localtime,driftfix=slew \ -vnc 10.124.241.211:0,password -k es \ -monitor telnet:localhost:37200,server,nowait \ -netdev tap,id=kvmorion,ifname=kvmorion,script=/etc/qemu-ifup-br0,downscript=/etc/qemu-ifdown-br0 \ -device virtio-net-pci,netdev=kvmorion,id=virtio-nic0,mac=02:85:64:02:c2:aa \ -device virtio-balloon-pci,id=balloon0 \ -boot menu=on \ -pidfile /var/run/kvmorion.pid \ -daemonize Using 1 CPU doesn't make a difference. Only workaround is disabling hpet (-no-hpet) Sample time drift in guest: >ntpdate -q 10.124.241.211 5 Dec 13:36:06 ntpdate[3464]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 3.694184, delay 0.02551 5 Dec 13:36:12 ntpdate[3464]: step time server 10.124.241.211 offset 3.694184 s ec >ntpdate -q 10.124.241.211 5 Dec 13:52:02 ntpdate[1964]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 4.719968, delay 0.02554 5 Dec 13:52:08 ntpdate[1964]: step time server 10.124.241.211 offset 4.719968 s ec To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1086782/+subscriptions
[Qemu-devel] [Bug 1086782] Re: HPET time drift windows 7 64bits guest
Triaging old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays? ** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1086782 Title: HPET time drift windows 7 64bits guest Status in QEMU: Incomplete Bug description: Using latest qemu-kvm (1.2.0), time drift (clock slow in guest) in Windows 7 64 bits guest when HPET is enabled (default). Disabling HPET (-no-hpet) solves the time drift. UsePlatformClock enable/disable doesn't make a difference in the guest. bcdedit /set useplatformclock true Using driftfix slew doesn't make a difference too. # qemu-system-x86_64 --version QEMU emulator version 1.2.0 (qemu-kvm-1.2.0), Copyright (c) 2003-2008 Fabrice Bellard Kernel is 3.6.8: # uname -a Linux pulsar 3.6.8 #1 SMP Sat Dec 1 16:26:10 CET 2012 x86_64 x86_64 x86_64 GNU/Linux TSC is stable in the host: === # cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc Dmesg: [0.00] hpet clockevent registered [0.00] tsc: Fast TSC calibration using PIT [0.00] tsc: Detected 2660.096 MHz processor [0.001002] Calibrating delay loop (skipped), value calculated using timer frequency.. 5320.19 BogoMIPS (lpj=2660096) [0.001138] pid_max: default: 32768 minimum: 301 ... [1.492019] tsc: Refined TSC clocksource calibration: 2659.973 MHz [1.492093] Switching to clocksource tsc CPUinfo, constant_tsc: vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPUQ8400 @ 2.66GHz stepping: 10 microcode : 0xa0b cpu MHz : 2667.000 cache size : 2048 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority bogomips: 5320.19 # grep -i hpet .config CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y CONFIG_HPET=y # CONFIG_HPET_MMAP is not set === Qemu command line: /usr/bin/qemu-system-x86_64 -drive file=/dev/vol0/KVMORION01,cache=none,aio=native,if=virtio \ -drive file=/dev/vol0/KVMORION02,cache=none,aio=native,if=virtio \ -cpu host \ -m 2048 \ -smp 4,maxcpus=4,cores=4,threads=1,sockets=1 \ -rtc base=localtime,driftfix=slew \ -vnc 10.124.241.211:0,password -k es \ -monitor telnet:localhost:37200,server,nowait \ -netdev tap,id=kvmorion,ifname=kvmorion,script=/etc/qemu-ifup-br0,downscript=/etc/qemu-ifdown-br0 \ -device virtio-net-pci,netdev=kvmorion,id=virtio-nic0,mac=02:85:64:02:c2:aa \ -device virtio-balloon-pci,id=balloon0 \ -boot menu=on \ -pidfile /var/run/kvmorion.pid \ -daemonize Using 1 CPU doesn't make a difference. Only workaround is disabling hpet (-no-hpet) Sample time drift in guest: >ntpdate -q 10.124.241.211 5 Dec 13:36:06 ntpdate[3464]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 3.694184, delay 0.02551 5 Dec 13:36:12 ntpdate[3464]: step time server 10.124.241.211 offset 3.694184 s ec >ntpdate -q 10.124.241.211 5 Dec 13:52:02 ntpdate[1964]: Raised to realtime priority class server 10.124.241.211, stratum 2, offset 4.719968, delay 0.02554 5 Dec 13:52:08 ntpdate[1964]: step time server 10.124.241.211 offset 4.719968 s ec To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1086782/+subscriptions
