On Thu, 14 Apr 2022 23:47:42 +0200, Stefan Sperling <[email protected]>
wrote:
> > $ sysctl kern.timecounter
> > kern.timecounter.tick=1
> > kern.timecounter.timestepwarnings=0
> > kern.timecounter.hardware=pvclock0
> > kern.timecounter.choice=i8254(0) pvclock0(1500) acpihpet0(1000)
> > acpitimer0(1000)
> >
> > Anyone have ideas of things I could try that are less wrong than
> > running rdate from cron? Thanks.
>
> I have a -current built-a-week-ago guest on stock Debian KVM, no
> problems with time-keeping. It picks acpihpet as timecounter instead
> of pvclock:
>
> $ sysctl kern.timecounter
> kern.timecounter.tick=1
> kern.timecounter.timestepwarnings=0
> kern.timecounter.hardware=acpihpet0
> kern.timecounter.choice=i8254(0) pvclock0(500) acpihpet0(1000)
> acpitimer0(1000)
I've some VMs using
$ sysctl kern.timecounter
kern.timecounter.tick=1
kern.timecounter.timestepwarnings=0
kern.timecounter.hardware=pvclock0
kern.timecounter.choice=i8254(0) pvclock0(1500) acpitimer0(1000)
for two months on this particular host and no issue. That said I'm
using an Intel CPU and I force kvm to virtualize some "recent" hardware
(because I hated seeing a floppy disk c* in my dmesg) so I run
> QEMU Standard PC (Q35 + ICH9, 2009)
full dmesg for the curious:
$ dmesg
OpenBSD 7.1 (GENERIC.MP) #457: Sun Apr 3 00:33:57 MDT 2022
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 3204300800 (3055MB)
avail mem = 3089903616 (2946MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xf5af0 (11 entries)
bios0: vendor SeaBIOS version "1.14.0-2" date 04/01/2014
bios0: QEMU Standard PC (Q35 + ICH9, 2009)
acpi0 at bios0: ACPI 3.0
acpi0: sleep states S5
acpi0: tables DSDT FACP APIC MCFG WAET
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i7-9700T CPU @ 2.00GHz, 674.06 MHz, 06-9e-0d
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,SSE3,PCLMUL,VMX,SSSE3,FMA3,CX16,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,FSGSBASE,TSC_ADJUST,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,UMIP,MD_CLEAR,IBRS,IBPB,STIBP,SSBD,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line
16-way L2 cache
cpu0: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 999MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i7-9700T CPU @ 2.00GHz, 750.80 MHz, 06-9e-0d
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,SSE3,PCLMUL,VMX,SSSE3,FMA3,CX16,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,FSGSBASE,TSC_ADJUST,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,UMIP,MD_CLEAR,IBRS,IBPB,STIBP,SSBD,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
cpu1: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line
16-way L2 cache
cpu1: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu1: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu1: smt 0, core 0, package 1
ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xb0000000, bus 0-255
acpiprt0 at acpi0: bus 0 (PCI0)
"ACPI0006" at acpi0 not configured
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
com0 at acpi0 COM1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
acpicmos0 at acpi0
"PNP0A06" at acpi0 not configured
"PNP0A06" at acpi0 not configured
"QEMU0002" at acpi0 not configured
"ACPI0010" at acpi0 not configured
acpicpu0 at acpi0: C1(@1 halt!)
acpicpu1 at acpi0: C1(@1 halt!)
pvbus0 at mainbus0: KVM
pvclock0 at pvbus0
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82G33 Host" rev 0x00
vga1 at pci0 dev 1 function 0 "Bochs VGA" rev 0x02
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
ppb0 at pci0 dev 2 function 0 vendor "Red Hat", unknown product 0x000c rev
0x00: apic 0 int 22
pci1 at ppb0 bus 1
virtio0 at pci1 dev 0 function 0 "Qumranet Virtio 1.x Network" rev 0x01
vio0 at virtio0: address 52:54:00:06:db:02
virtio0: msix shared
ppb1 at pci0 dev 2 function 1 vendor "Red Hat", unknown product 0x000c rev
0x00: apic 0 int 22
pci2 at ppb1 bus 2
xhci0 at pci2 dev 0 function 0 vendor "Red Hat", unknown product 0x000d rev
0x01: apic 0 int 22, xHCI 0.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Red Hat xHCI root hub" rev 3.00/1.00
addr 1
ppb2 at pci0 dev 2 function 2 vendor "Red Hat", unknown product 0x000c rev
0x00: apic 0 int 22
pci3 at ppb2 bus 3
virtio1 at pci3 dev 0 function 0 "Qumranet Virtio 1.x Console" rev 0x01
virtio1: no matching child driver; not configured
ppb3 at pci0 dev 2 function 3 vendor "Red Hat", unknown product 0x000c rev
0x00: apic 0 int 22
pci4 at ppb3 bus 4
virtio2 at pci4 dev 0 function 0 "Qumranet Virtio 1.x Storage" rev 0x01
vioblk0 at virtio2
scsibus1 at vioblk0: 1 targets
sd0 at scsibus1 targ 0 lun 0: <VirtIO, Block Device, >
sd0: 51200MB, 512 bytes/sector, 104857600 sectors
virtio2: msix per-VQ
ppb4 at pci0 dev 2 function 4 vendor "Red Hat", unknown product 0x000c rev
0x00: apic 0 int 22
pci5 at ppb4 bus 5
virtio3 at pci5 dev 0 function 0 vendor "Qumranet", unknown product 0x1045 rev
0x01
viomb0 at virtio3
virtio3: apic 0 int 22
ppb5 at pci0 dev 2 function 5 vendor "Red Hat", unknown product 0x000c rev
0x00: apic 0 int 22
pci6 at ppb5 bus 6
virtio4 at pci6 dev 0 function 0 "Qumranet Virtio 1.x RNG" rev 0x01
viornd0 at virtio4
virtio4: apic 0 int 22
ppb6 at pci0 dev 2 function 6 vendor "Red Hat", unknown product 0x000c rev
0x00: apic 0 int 22
pci7 at ppb6 bus 7
pcib0 at pci0 dev 31 function 0 "Intel 82801IB LPC" rev 0x02
ahci0 at pci0 dev 31 function 2 "Intel 82801I AHCI" rev 0x02: msi, AHCI 1.0
ahci0: port 0: 1.5Gb/s
scsibus2 at ahci0: 32 targets
cd0 at scsibus2 targ 0 lun 0: <QEMU, QEMU DVD-ROM, 2.5+> removable
ichiic0 at pci0 dev 31 function 3 "Intel 82801I SMBus" rev 0x02: apic 0 int 16
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
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vmm0 at mainbus0: VMX/EPT
uhidev0 at uhub0 port 16 configuration 1 interface 0 "QEMU QEMU USB Tablet" rev
2.00/0.00 addr 2
uhidev0: iclass 3/0
ums0 at uhidev0: 3 buttons, Z dir
wsmouse1 at ums0 mux 0
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (bea1ae4fa2fe4f45.a) swap on sd0b dump on sd0b
