Good time-of-day, In playing with vmd, I'm unable to get the guest's ntpd to sync to its upstream ntp (whether that's the host ntpd or poot.ntp.org). The guest is losing about 1 second for every 2 that pass. I'm using a recent snapshot on both host and guest on a 1st gen thinkpad X1 carbon (dmesgs below).
Host (192.168.1.1) ntpd.conf contains: servers pool.ntp.org sensor * listen on 192.168.1.1 Guest (192.168.1.45) ntpd.conf: servers pool.ntp.org weight 2 servers 192.168.1.1 weight 5 sensor * After waiting a couple of minutes for peers and vmmci0 to validate (should it take that long?), 'ntpctl -s all' returns: 2/2 peers valid, 1/1 sensors valid, clock unsynced, clock offset is 32281.993ms peer wt tl st next poll offset delay jitter 192.168.1.1 from pool 5 10 3 17s 30s 31664.409ms 1.342ms 1.093ms 91.148.192.49 from pool pool.ntp.org 2 10 2 24s 33s 32368.088ms 191.773ms 16.310ms sensor wt gd st next poll offset correction vmmci0 1 1 0 9s 15s 98635.552ms 0.000ms Running 'ntpd -dvs' on the guest, I get an initial correction working fine, but then rapid lag. ntp engine ready sensor vmmci0 added (weight 1, correction 0.000000, refstr 1146241352, stratum 0) sensor vmmci0: offset 182.934150 set local clock to Tue Jul 18 20:28:00 AEST 2017 (offset 182.934150s) reply from 192.168.1.1: offset 103.081636 delay 182.956776, next query 8s reply from 91.148.192.49: offset 11.955610 delay 0.179250, next query 6s sensor vmmci0: offset 14.342282 reply from 91.148.192.49: offset 16.811849 delay 0.191814, next query 6s reply from 192.168.1.1: offset 17.636314 delay 0.000753, next query 6s reply from 91.148.192.49: offset 21.882577 delay 0.182973, next query 6s reply from 192.168.1.1: offset 22.651855 delay 0.000650, next query 7s peer 91.148.192.49 now valid reply from 91.148.192.49: offset 26.093048 delay 0.193890, next query 7s sensor vmmci0: offset 26.774802 peer 192.168.1.1 now valid reply from 192.168.1.1: offset 27.704139 delay 0.000945, next query 7s reply from 91.148.192.49: offset 31.263042 delay 0.200928, next query 8s reply from 192.168.1.1: offset 32.950914 delay 0.000978, next query 5s reply from 192.168.1.1: offset 36.540396 delay 0.002326, next query 8s reply from 91.148.192.49: offset 37.510453 delay 0.214019, next query 6s reply from 192.168.1.1: offset 42.784325 delay 0.000786, next query 34s reply from 91.148.192.49: offset 42.847706 delay 0.194050, next query 30s sensor vmmci0: offset 39.764442 sensor vmmci0: offset 52.734895 reply from 91.148.192.49: offset 66.757008 delay 0.226063, next query 30s reply from 192.168.1.1: offset 69.387955 delay 0.000875, next query 31s adjusting local clock by 22.651855s sensor vmmci0: offset 43.123480 sensor update vmmci0: offset 23.597814 sensor vmmci0: offset 56.069524 reply from 91.148.192.49: offset 67.973792 delay 0.193812, next query 33s reply from 192.168.1.1: offset 70.602103 delay 0.001234, next query 31s I don't know how quickly that 'adjusting local clock by XXX' should take effect, but running 'date ; sleep 1' in a loop shows no drastic steps. vm.conf snippet for this vm: disk "/home/tomr/vms/fresh_snapshot" memory 1G interface { switch "local" } I added the 'memory 1G' line later on - results were the same with the default of 512M. Starting up, ntpd initially complained about /var/db/ntpd.drift being empty, but never wrote to it. I entered a few numbers manually, but they were never updated. looking forward to a clue... tom dmesg for host: OpenBSD 6.1-current (GENERIC.MP) #97: Sat Jul 15 12:08:50 MDT 2017 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 8383655936 (7995MB) avail mem = 8123781120 (7747MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xdae9d000 (68 entries) bios0: vendor LENOVO version "G6ET96WW (2.56 )" date 04/29/2013 bios0: LENOVO 34486T7 acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP TCPA SSDT SSDT SSDT HPET APIC MCFG ECDT FPDT ASF! UEFI UEFI MSDM SSDT SSDT DMAR UEFI SSDT DBG2 acpi0: wakeup devices LID_(S4) SLPB(S3) IGBE(S4) EXP2(S4) XHCI(S3) EHC1(S3) EHC2(S3) HDEF(S4) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 14318179 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i5-3337U CPU @ 1.80GHz, 1796.21 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu0: 256KB 64b/line 8-way L2 cache cpu0: TSC frequency 1796205600 Hz cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges cpu0: apic clock running at 99MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE cpu1 at mainbus0: apid 1 (application processor) cpu1: Intel(R) Core(TM) i5-3337U CPU @ 1.80GHz, 1795.92 MHz cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 1, core 0, package 0 cpu2 at mainbus0: apid 2 (application processor) cpu2: Intel(R) Core(TM) i5-3337U CPU @ 1.80GHz, 1795.92 MHz cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu2: 256KB 64b/line 8-way L2 cache cpu2: smt 0, core 1, package 0 cpu3 at mainbus0: apid 3 (application processor) cpu3: Intel(R) Core(TM) i5-3337U CPU @ 1.80GHz, 1795.92 MHz cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu3: 256KB 64b/line 8-way L2 cache cpu3: smt 1, core 1, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63 acpiec0 at acpi0 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (PEG_) acpiprt2 at acpi0: bus 2 (EXP1) acpiprt3 at acpi0: bus 3 (EXP2) acpicpu0 at acpi0: C3(200@87 mwait.1@0x30), C2(500@59 mwait.1@0x10), C1(1000@1 mwait.1), PSS acpicpu1 at acpi0: C3(200@87 mwait.1@0x30), C2(500@59 mwait.1@0x10), C1(1000@1 mwait.1), PSS acpicpu2 at acpi0: C3(200@87 mwait.1@0x30), C2(500@59 mwait.1@0x10), C1(1000@1 mwait.1), PSS acpicpu3 at acpi0: C3(200@87 mwait.1@0x30), C2(500@59 mwait.1@0x10), C1(1000@1 mwait.1), PSS acpipwrres0 at acpi0: PUBS, resource for XHCI, EHC1, EHC2 acpitz0 at acpi0: critical temperature is 200 degC acpibtn0 at acpi0: LID_ acpibtn1 at acpi0: SLPB "MSFT9000" at acpi0 not configured "MSFT9001" at acpi0 not configured "LEN0071" at acpi0 not configured "LEN0030" at acpi0 not configured "SMO1200" at acpi0 not configured acpibat0 at acpi0: BAT0 model "45N1071" serial 9485 type LiP oem "SMP" acpiac0 at acpi0: AC unit offline "LEN0078" at acpi0 not configured acpithinkpad0 at acpi0 "PNP0C14" at acpi0 not configured "PNP0C14" at acpi0 not configured "INT33A0" at acpi0 not configured acpivideo0 at acpi0: VID_ acpivout at acpivideo0 not configured acpivideo1 at acpi0: VID_ cpu0: Enhanced SpeedStep 1796 MHz: speeds: 1801, 1800, 1700, 1600, 1500, 1400, 1300, 1200, 1100, 1000, 900, 800 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core 3G Host" rev 0x09 inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09 drm0 at inteldrm0 inteldrm0: msi inteldrm0: 1366x768, 32bpp wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) xhci0 at pci0 dev 20 function 0 "Intel 7 Series xHCI" rev 0x04: msi usb0 at xhci0: USB revision 3.0 uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 "Intel 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 16 usb1 at ehci0: USB revision 2.0 uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi azalia0: codecs: Realtek ALC269, Intel/0x2806, using Realtek ALC269 audio0 at azalia0 ppb0 at pci0 dev 28 function 0 "Intel 7 Series PCIE" rev 0xc4: msi pci1 at ppb0 bus 2 sdhc0 at pci1 dev 0 function 0 "Ricoh 5U823 SD/MMC" rev 0x04: apic 2 int 16 sdhc0: SDHC 3.0, 50 MHz base clock sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed, dma ppb1 at pci0 dev 28 function 1 "Intel 7 Series PCIE" rev 0xc4: msi pci2 at ppb1 bus 3 iwn0 at pci2 dev 0 function 0 "Intel Centrino Advanced-N 6205" rev 0x96: msi, MIMO 2T2R, MoW, address 84:3a:4b:cf:7e:e4 ehci1 at pci0 dev 29 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 23 usb2 at ehci1: USB revision 2.0 uhub2 at usb2 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 pcib0 at pci0 dev 31 function 0 "Intel QS77 LPC" rev 0x04 ahci0 at pci0 dev 31 function 2 "Intel 7 Series AHCI" rev 0x04: msi, AHCI 1.3 ahci0: port 0: 6.0Gb/s scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, SanDisk SD5SG212, 10.0> SCSI3 0/direct fixed naa.5001b449df708c96 sd0: 122104MB, 512 bytes/sector, 250069680 sectors, thin ichiic0 at pci0 dev 31 function 3 "Intel 7 Series SMBus" rev 0x04: apic 2 int 18 iic0 at ichiic0 isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 wsmouse1 at pms0 mux 0 pms0: Synaptics clickpad, firmware 8.1 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 vmm0 at mainbus0: VMX/EPT efifb at mainbus0 not configured error: [drm:pid0:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A error: [drm:pid0:intel_pch_fifo_underrun_irq_handler] *ERROR* PCH transcoder A FIFO underrun uhub3 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 ugen0 at uhub3 port 4 "Broadcom Corp BCM20702A0" rev 2.00/1.12 addr 3 uvideo0 at uhub3 port 6 configuration 1 interface 0 "SunplusIT INC. Integrated Camera" rev 2.00/14.12 addr 4 video0 at uvideo0 uhub4 at uhub2 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (736d5c9de557645e.a) swap on sd0b dump on sd0b dmesg for guest: OpenBSD 6.1-current (GENERIC) #92: Sat Jul 15 12:05:20 MDT 2017 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC real mem = 1056948224 (1007MB) avail mem = 1019179008 (971MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0 acpi at bios0 not configured cpu0 at mainbus0: (uniprocessor) cpu0: Intel(R) Core(TM) i5-3337U CPU @ 1.80GHz, 1796.45 MHz cpu0: FPU,VME,DE,PSE,MSR,PAE,MCE,CX8,SEP,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AES,SAVE,AVX,F16C,RDRAND,HV,NXE,LONG,LAHF,FSGSBASE,SMEP,ERMS cpu0: 256KB 64b/line 8-way L2 cache cpu0: smt 0, core 0, package 0 pvbus0 at mainbus0: OpenBSD pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "OpenBSD VMM Host" rev 0x00 virtio0 at pci0 dev 1 function 0 "Qumranet Virtio RNG" rev 0x00 viornd0 at virtio0 virtio0: irq 3 virtio1 at pci0 dev 2 function 0 "Qumranet Virtio Storage" rev 0x00 vioblk0 at virtio1 scsibus1 at vioblk0: 2 targets sd0 at scsibus1 targ 0 lun 0: <VirtIO, Block Device, > SCSI3 0/direct fixed sd0: 5120MB, 512 bytes/sector, 10485760 sectors virtio1: irq 5 virtio2 at pci0 dev 3 function 0 "Qumranet Virtio Storage" rev 0x00 vioblk1 at virtio2 scsibus2 at vioblk1: 2 targets sd1 at scsibus2 targ 0 lun 0: <VirtIO, Block Device, > SCSI3 0/direct fixed sd1: 113MB, 512 bytes/sector, 232519 sectors virtio2: irq 6 virtio3 at pci0 dev 4 function 0 "Qumranet Virtio Network" rev 0x00 vio0 at virtio3: address fe:e1:bb:d1:f2:94 virtio3: irq 7 virtio4 at pci0 dev 5 function 0 "OpenBSD VMM Control" rev 0x00 vmmci0 at virtio4 virtio4: irq 9 isa0 at mainbus0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns8250, no fifo com0: console vscsi0 at root scsibus3 at vscsi0: 256 targets softraid0 at root scsibus4 at softraid0: 256 targets root on sd0a (a3e278be1106b0cc.a) swap on sd0b dump on sd0b