> From: David Hill <dh...@mindcry.org>
> Date: Thu, 6 Jun 2019 08:22:06 -0400
>
> On 6/6/19 6:56 AM, Scott Cheloha wrote:
> > On Wed, Jun 05, 2019 at 08:33:56PM -0400, David Hill wrote:
> >> Hello -
> >>
> >> I noticed some negative roundtrip times when running traceroute, which uses
> >> the monotonic clock to calculate the RTT.
> >>
> >> If I run the following code, it eventually bombs.?? It bombs quick if I
> >> launch Firefox.
> >>
> >> timespeccmp failed
> >> tp1 s:103780 n:63101042
> >> tp2 s:103779 n:761117849
> > please share your dmesg and the output of
> >
> > sysctl kern.clockrate kern.timecounter
> >
> > Could you also share the output when you run the following code?
> > With and without firefox running? Curious about how frequently
> > this happens.
> >
> > #include <sys/time.h>
> >
> > #include <err.h>
> > #include <stdio.h>
> > #include <time.h>
> >
> > int
> > main(void)
> > {
> > struct timespec t0, t1, timeout;
> >
> > timeout.tv_sec = 0;
> > timeout.tv_nsec = 100000;
> >
> > for (;;) {
> > clock_gettime(CLOCK_MONOTONIC, &t0);
> > if (nanosleep(&timeout, NULL) == -1)
> > err(1, "nanosleep");
> > clock_gettime(CLOCK_MONOTONIC, &t1);
> > if (timespeccmp(&t0, &t1, >)) {
> > printf("%lld.%09ld precedes %lld.%09ld\n",
> > t1.tv_sec, t1.tv_nsec, t0.tv_sec, t0.tv_nsec);
> > }
> > }
> >
> > return 0;
> > }
> >
>
> $ sysctl kern.clockrate kern.timecounter
> kern.clockrate=tick = 10000, tickadj = 40, hz = 100, profhz = 100,
> stathz = 100
> kern.timecounter.tick=1
> kern.timecounter.timestepwarnings=0
> kern.timecounter.hardware=tsc
> kern.timecounter.choice=i8254(0) acpihpet0(1000) tsc(2000) acpitimer0(1000)
>
> 146259.148543164 precedes 146259.450584680
> 146259.488592813 precedes 146259.790556528
> 146259.808566236 precedes 146260.110528202
> 146261.148476141 precedes 146261.450398822
> 146262.888279505 precedes 146263.190240715
> 146263.887431808 precedes 146264.189435801
> 146274.487159451 precedes 146274.789148187
> 146278.186820816 precedes 146278.488803756
> 146279.546680181 precedes 146279.848674138
> 146284.326305557 precedes 146284.628224696
> 146285.426154861 precedes 146285.728066901
> 146287.885921929 precedes 146288.187826688
> 146289.985763711 precedes 146290.287731233
> 146290.985659041 precedes 146291.287640302
> 146293.985348615 precedes 146294.287327519
> 146295.465186742 precedes 146295.767218516
> 146295.885156426 precedes 146296.187140717
> 146298.544907956 precedes 146298.846882759
> 146298.644894308 precedes 146298.946889142
Does this also happen with
kern.timecounter.hardware=acpihpet
?
> OpenBSD 6.5-current (GENERIC.MP) #27: Tue Jun 4 15:36:14 EDT 2019
> dh...@liver.mindcry.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 8418242560 (8028MB)
> avail mem = 8152993792 (7775MB)
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.8 @ 0x9a565000 (49 entries)
> bios0: vendor American Megatrends Inc. version "X420UA.204" date 11/16/2018
> bios0: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop X420UA
> acpi0 at bios0: rev 2
> acpi0: sleep states S0 S3 S4 S5
> acpi0: tables DSDT FACP APIC FPDT FIDT ECDT MCFG SSDT SSDT SSDT MSDM
> SSDT HPET SSDT UEFI SSDT LPIT SSDT SSDT SSDT SSDT DBGP DBG2 DMAR NHLT
> BGRT TPM2 WSMT
> acpi0: wakeup devices PXSX(S4) RP06(S4) GLAN(S4) XHC_(S3) XDCI(S4) HDAS(S4)
> 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) i5-8250U CPU @ 1.60GHz, 3393.27 MHz, 06-8e-0a
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu0: 256KB 64b/line 8-way L2 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
> cpu0: apic clock running at 23MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE
> cpu1 at mainbus0: apid 2 (application processor)
> cpu1: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 3392.09 MHz, 06-8e-0a
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu1: 256KB 64b/line 8-way L2 cache
> cpu1: smt 0, core 1, package 0
> cpu2 at mainbus0: apid 4 (application processor)
> cpu2: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 3392.09 MHz, 06-8e-0a
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu2: 256KB 64b/line 8-way L2 cache
> cpu2: smt 0, core 2, package 0
> cpu3 at mainbus0: apid 6 (application processor)
> cpu3: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 3392.09 MHz, 06-8e-0a
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu3: 256KB 64b/line 8-way L2 cache
> cpu3: smt 0, core 3, package 0
> cpu4 at mainbus0: apid 1 (application processor)
> cpu4: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 3392.09 MHz, 06-8e-0a
> cpu4:
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu4: 256KB 64b/line 8-way L2 cache
> cpu4: smt 1, core 0, package 0
> cpu5 at mainbus0: apid 3 (application processor)
> cpu5: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 3392.09 MHz, 06-8e-0a
> cpu5:
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu5: 256KB 64b/line 8-way L2 cache
> cpu5: smt 1, core 1, package 0
> cpu6 at mainbus0: apid 5 (application processor)
> cpu6: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 3392.09 MHz, 06-8e-0a
> cpu6:
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu6: 256KB 64b/line 8-way L2 cache
> cpu6: smt 1, core 2, package 0
> cpu7 at mainbus0: apid 7 (application processor)
> cpu7: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 3392.09 MHz, 06-8e-0a
> cpu7:
> 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,S
> SSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI
> 1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
> cpu7: 256KB 64b/line 8-way L2 cache
> cpu7: smt 1, core 3, package 0
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
> acpiec0 at acpi0
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xf0000000, bus 0-127
> acpihpet0 at acpi0: 23999999 Hz
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus -1 (PEG0)
> acpiprt2 at acpi0: bus -1 (PEG1)
> acpiprt3 at acpi0: bus -1 (PEG2)
> acpiprt4 at acpi0: bus -1 (RP09)
> acpiprt5 at acpi0: bus -1 (RP10)
> acpiprt6 at acpi0: bus -1 (RP11)
> acpiprt7 at acpi0: bus -1 (RP12)
> acpiprt8 at acpi0: bus -1 (RP13)
> acpiprt9 at acpi0: bus -1 (RP01)
> acpiprt10 at acpi0: bus -1 (RP02)
> acpiprt11 at acpi0: bus -1 (RP03)
> acpiprt12 at acpi0: bus -1 (RP04)
> acpiprt13 at acpi0: bus -1 (RP05)
> acpiprt14 at acpi0: bus 1 (RP06)
> acpiprt15 at acpi0: bus -1 (RP07)
> acpiprt16 at acpi0: bus -1 (RP08)
> acpiprt17 at acpi0: bus -1 (RP17)
> acpiprt18 at acpi0: bus -1 (RP18)
> acpiprt19 at acpi0: bus -1 (RP19)
> acpiprt20 at acpi0: bus -1 (RP20)
> acpiprt21 at acpi0: bus -1 (RP21)
> acpiprt22 at acpi0: bus -1 (RP22)
> acpiprt23 at acpi0: bus -1 (RP23)
> acpiprt24 at acpi0: bus -1 (RP24)
> acpiprt25 at acpi0: bus -1 (RP14)
> acpiprt26 at acpi0: bus -1 (RP15)
> acpiprt27 at acpi0: bus -1 (RP16)
> acpiec at acpi0 not configured
> acpicpu0 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu1 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu2 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu3 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu4 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu5 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu6 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu7 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpitz0 at acpi0: critical temperature is 103 degC
> acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
> acpicmos0 at acpi0
> acpiac0 at acpi0: AC unit online
> acpibtn0 at acpi0: LID_
> acpibat0 at acpi0: BAT0 model "ASUS Battery" serial type LIon oem
> "ASUSTeK"
> "INT3403" at acpi0 not configured
> "INT3403" at acpi0 not configured
> "INT3403" at acpi0 not configured
> "INT3403" at acpi0 not configured
> "ATK3001" at acpi0 not configured
> "INT344B" at acpi0 not configured
> "ELAN1200" at acpi0 not configured
> acpibtn1 at acpi0: SLPB
> "INT33A1" at acpi0 not configured
> acpibtn2 at acpi0: PWRB
> "MSFT0101" at acpi0 not configured
> "ASUS7000" at acpi0 not configured
> "PNP0C14" at acpi0 not configured
> "ASUS1000" at acpi0 not configured
> "INT3400" at acpi0 not configured
> acpivideo0 at acpi0: GFX0
> acpivout0 at acpivideo0: DD1F
> cpu0: using VERW MDS workaround (except on vmm entry)
> cpu0: Enhanced SpeedStep 3393 MHz: speeds: 1801, 1800, 1700, 1600, 1500,
> 1400, 1300, 1200, 1100, 1000, 900, 800, 700, 600, 500, 400 MHz
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel Core 8G Host" rev 0x08
> inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics 620" rev 0x07
> drm0 at inteldrm0
> inteldrm0: msi
> "Intel Core 6G Thermal" rev 0x08 at pci0 dev 4 function 0 not configured
> xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x21: msi,
> xHCI 1.0
> 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
> pchtemp0 at pci0 dev 20 function 2 "Intel 100 Series Thermal" rev 0x21
> dwiic0 at pci0 dev 21 function 0 "Intel 100 Series I2C" rev 0x21: apic 2
> int 16
> iic0 at dwiic0
> dwiic1 at pci0 dev 21 function 1 "Intel 100 Series I2C" rev 0x21: apic 2
> int 17
> iic1 at dwiic1
> ihidev0 at iic1 addr 0x15 (polling), vendor 0x4f3 product 0x30ce, ELAN1200
> ihidev0: 11 report ids
> imt0 at ihidev0: clickpad, 5 contacts
> wsmouse0 at imt0 mux 0
> "Intel 100 Series MEI" rev 0x21 at pci0 dev 22 function 0 not configured
> ahci0 at pci0 dev 23 function 0 "Intel 100 Series AHCI" rev 0x21: msi,
> AHCI 1.3.1
> ahci0: PHY offline on port 1
> ahci0: port 2: 6.0Gb/s
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 2 lun 0: <ATA, SanDisk SD9SN8W1, X610> SCSI3
> 0/direct fixed naa.5001b448b9007e6f
> sd0: 122104MB, 512 bytes/sector, 250069680 sectors, thin
> ppb0 at pci0 dev 28 function 0 "Intel 100 Series PCIE" rev 0xf1: msi
> pci1 at ppb0 bus 1
> iwm0 at pci1 dev 0 function 0 "Intel Dual Band Wireless-AC 8265" rev
> 0x78, msi
> "Intel 100 Series UART" rev 0x21 at pci0 dev 30 function 0 not configured
> "Intel 100 Series SPI" rev 0x21 at pci0 dev 30 function 2 not configured
> pcib0 at pci0 dev 31 function 0 "Intel 200 Series LPC" rev 0x21
> "Intel 100 Series PMC" rev 0x21 at pci0 dev 31 function 2 not configured
> azalia0 at pci0 dev 31 function 3 "Intel 200 Series HD Audio" rev 0x21: msi
> azalia0: codecs: Realtek/0x0256, Intel/0x280b, using Realtek/0x0256
> audio0 at azalia0
> ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x21:
> apic 2 int 16
> iic2 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
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> vmm0 at mainbus0: VMX/EPT
> efifb at mainbus0 not configured
> vscsi0 at root
> scsibus2 at vscsi0: 256 targets
> softraid0 at root
> scsibus3 at softraid0: 256 targets
> root on sd0a (047aa5e482271013.a) swap on sd0b dump on sd0b
> inteldrm0: 1920x1080, 32bpp
> wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
> wsdisplay0: screen 1-5 added (std, vt100 emulation)
>
>
