[Bug 211897] horrible time skew under 10.3-R-p7
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Tue Aug 16 11:38:21 UTC 2016
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211897
Bug ID: 211897
Summary: horrible time skew under 10.3-R-p7
Product: Base System
Version: 10.3-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs at FreeBSD.org
Reporter: freebsd-bugzilla at ayaken.net
CC: freebsd-amd64 at FreeBSD.org
CC: freebsd-amd64 at FreeBSD.org
With 10.3-R-p7, I lose roughly one second of time every 10 seconds of (real)
wall clock time.
Look and behold:
# ntpd -q ; sleep 10; ntpd -q
16 Aug 13:12:52 ntpd[48425]: ntpd 4.2.8p8-a (1): Starting
16 Aug 13:12:52 ntpd[48425]: Command line: ntpd -q
16 Aug 13:12:52 ntpd[48425]: proto: precision = 0.230 usec (-22)
16 Aug 13:12:52 ntpd[48425]: leapsecond file
('/var/db/ntpd.leap-seconds.list'): good hash signature
16 Aug 13:12:52 ntpd[48425]: leapsecond file
('/var/db/ntpd.leap-seconds.list'): loaded, expire=2016-12-28T00:00:00Z
last=2015-07-01T00:00:00Z ofs=36
16 Aug 13:12:52 ntpd[48425]: Listen and drop on 0 v6wildcard [::]:123
16 Aug 13:12:52 ntpd[48425]: Listen and drop on 1 v4wildcard 0.0.0.0:123
16 Aug 13:12:52 ntpd[48425]: Listen normally on 2 em0 10.10.1.79:123
16 Aug 13:12:52 ntpd[48425]: Listen normally on 3 lo0 [::1]:123
16 Aug 13:12:52 ntpd[48425]: Listen normally on 4 lo0 [fe80::1%2]:123
16 Aug 13:12:52 ntpd[48425]: Listen normally on 5 lo0 127.0.0.1:123
16 Aug 13:12:52 ntpd[48425]: Listening on routing socket on fd #26 for
interface updates
16 Aug 13:12:54 ntpd[48425]: ntpd: time set +0.891676 s
ntpd: time set +0.891676s
16 Aug 13:13:04 ntpd[48426]: ntpd 4.2.8p8-a (1): Starting
16 Aug 13:13:04 ntpd[48426]: Command line: ntpd -q
16 Aug 13:13:04 ntpd[48426]: proto: precision = 0.229 usec (-22)
16 Aug 13:13:04 ntpd[48426]: leapsecond file
('/var/db/ntpd.leap-seconds.list'): good hash signature
16 Aug 13:13:04 ntpd[48426]: leapsecond file
('/var/db/ntpd.leap-seconds.list'): loaded, expire=2016-12-28T00:00:00Z
last=2015-07-01T00:00:00Z ofs=36
16 Aug 13:13:04 ntpd[48426]: Listen and drop on 0 v6wildcard [::]:123
16 Aug 13:13:04 ntpd[48426]: Listen and drop on 1 v4wildcard 0.0.0.0:123
16 Aug 13:13:04 ntpd[48426]: Listen normally on 2 em0 10.10.1.79:123
16 Aug 13:13:04 ntpd[48426]: Listen normally on 3 lo0 [::1]:123
16 Aug 13:13:04 ntpd[48426]: Listen normally on 4 lo0 [fe80::1%2]:123
16 Aug 13:13:04 ntpd[48426]: Listen normally on 5 lo0 127.0.0.1:123
16 Aug 13:13:04 ntpd[48426]: Listening on routing socket on fd #26 for
interface updates
16 Aug 13:13:06 ntpd[48426]: ntpd: time set +1.218972 s
ntpd: time set +1.218972s
some five minutes later:
16 Aug 13:17:58 ntpd[48461]: Listening on routing socket on fd #26 for
interface updates
16 Aug 13:18:31 ntpd[48461]: ntpd: time set +32.207535 s
ntpd: time set +32.207535s
When downgrading from -p7 to -p4(kernel)/-p6(userland), this time skew
disappears (i.e., clock's running like it's supposed to).
Matthew@ has suggested my hardware might be the culprit, so here's my dmesg as
well:
Copyright (c) 1992-2016 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 10.3-RELEASE-p4 #0: Sat May 28 12:23:44 UTC 2016
root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
CPU: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (4000.07-MHz K8-class CPU)
Origin="GenuineIntel" Id=0x306c3 Family=0x6 Model=0x3c Stepping=3
Features=0xbfebfbff<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,HTT,TM,PBE>
Features2=0x7ffafbbf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
AMD Features2=0x21<LAHF,ABM>
Structured Extended
Features=0x2fbb<FSGSBASE,TSCADJ,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,NFPUSG>
XSAVE Features=0x1<XSAVEOPT>
VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
TSC: P-state invariant, performance statistics
real memory = 17179869184 (16384 MB)
avail memory = 16485646336 (15721 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <ALASKA A M I>
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 SMT threads
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 2
cpu3 (AP): APIC ID: 3
cpu4 (AP): APIC ID: 4
cpu5 (AP): APIC ID: 5
cpu6 (AP): APIC ID: 6
cpu7 (AP): APIC ID: 7
random: <Software, Yarrow> initialized
ioapic0 <Version 2.0> irqs 0-23 on motherboard
Cuse4BSD v0.1.36 @ /dev/cuse
kbd1 at kbdmux0
acpi0: <ALASKA A M I> on motherboard
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
cpu4: <ACPI CPU> on acpi0
cpu5: <ACPI CPU> on acpi0
cpu6: <ACPI CPU> on acpi0
cpu7: <ACPI CPU> on acpi0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 950
Event timer "HPET" frequency 14318180 Hz quality 550
atrtc0: <AT realtime clock> port 0x70-0x77 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> irq 16 at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0xe000-0xe07f mem
0xf6000000-0xf6ffffff,0xe0000000-0xefffffff,0xf0000000-0xf1ffffff irq 16 at
device 0.0 on pci1
nvidia0: <GeForce GTX 970> on vgapci0
vgapci0: child nvidia0 requested pci_enable_io
vgapci0: child nvidia0 requested pci_enable_io
vgapci0: Boot video device
hdac0: <NVIDIA (0x0fbb) HDA Controller> mem 0xf7080000-0xf7083fff irq 17 at
device 0.1 on pci1
xhci0: <Intel Wildcat Point USB 3.0 controller> mem 0xf7120000-0xf712ffff irq
16 at device 20.0 on pci0
xhci0: 32 bytes context size, 64-bit DMA
xhci0: Port routing mask set to 0xffffffff
usbus0 on xhci0
pci0: <simple comms> at device 22.0 (no driver attached)
em0: <Intel(R) PRO/1000 Network Connection 7.6.1-k> port 0xf040-0xf05f mem
0xf7100000-0xf711ffff,0xf7138000-0xf7138fff irq 20 at device 25.0 on pci0
em0: Using an MSI interrupt
em0: Ethernet address: 74:d4:35:e8:9f:6d
ehci0: <Intel Wildcat Point USB 2.0 controller USB-B> mem 0xf7137000-0xf71373ff
irq 16 at device 26.0 on pci0
usbus1: EHCI version 1.0
usbus1 on ehci0
hdac1: <Intel Wildcat Point HDA Controller> mem 0xf7130000-0xf7133fff irq 22 at
device 27.0 on pci0
pcib2: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib2
pcib3: <ACPI PCI-PCI bridge> irq 19 at device 28.3 on pci0
pci3: <ACPI PCI bus> on pcib3
pcib4: <ACPI PCI-PCI bridge> irq 19 at device 0.0 on pci3
pci4: <ACPI PCI bus> on pcib4
ehci1: <Intel Wildcat Point USB 2.0 controller USB-A> mem 0xf7136000-0xf71363ff
irq 23 at device 29.0 on pci0
usbus2: EHCI version 1.0
usbus2 on ehci1
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
ahci0: <Intel Wildcat Point AHCI SATA controller> port
0xf090-0xf097,0xf080-0xf083,0xf070-0xf077,0xf060-0xf063,0xf020-0xf03f mem
0xf7135000-0xf71357ff irq 19 at device 31.2 on pci0
ahci0: AHCI v1.30 with 6 6Gbps ports, Port Multiplier not supported
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich1: <AHCI channel> at channel 1 on ahci0
ahcich2: <AHCI channel> at channel 2 on ahci0
ahcich3: <AHCI channel> at channel 3 on ahci0
ahcich4: <AHCI channel> at channel 4 on ahci0
ahcich5: <AHCI channel> at channel 5 on ahci0
ahciem0: <AHCI enclosure management bridge> on ahci0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
acpi_tz1: <Thermal Zone> on acpi0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
ppc0: cannot reserve I/O port range
est0: <Enhanced SpeedStep Frequency Control> on cpu0
est1: <Enhanced SpeedStep Frequency Control> on cpu1
est2: <Enhanced SpeedStep Frequency Control> on cpu2
est3: <Enhanced SpeedStep Frequency Control> on cpu3
est4: <Enhanced SpeedStep Frequency Control> on cpu4
est5: <Enhanced SpeedStep Frequency Control> on cpu5
est6: <Enhanced SpeedStep Frequency Control> on cpu6
est7: <Enhanced SpeedStep Frequency Control> on cpu7
Timecounters tick every 1.000 msec
hdacc0: <NVIDIA (0x0071) HDA CODEC> at cad 0 on hdac0
hdaa0: <NVIDIA (0x0071) Audio Function Group> at nid 1 on hdacc0
pcm0: <NVIDIA (0x0071) (HDMI/DP 8ch)> at nid 4 on hdaa0
pcm1: <NVIDIA (0x0071) (HDMI/DP 8ch)> at nid 5 on hdaa0
pcm2: <NVIDIA (0x0071) (HDMI/DP 8ch)> at nid 6 on hdaa0
pcm3: <NVIDIA (0x0071) (HDMI/DP 8ch)> at nid 7 on hdaa0
hdacc1: <Realtek (0x0900) HDA CODEC> at cad 2 on hdac1
hdaa1: <Realtek (0x0900) Audio Function Group> at nid 1 on hdacc1
pcm4: <Realtek (0x0900) (Rear Analog 5.1/2.0)> at nid 20,22,21 and 24,26 on
hdaa1
pcm5: <Realtek (0x0900) (Front Analog)> at nid 27 and 25 on hdaa1
pcm6: <Realtek (0x0900) (Onboard Digital)> at nid 17 on hdaa1
pcm7: <Realtek (0x0900) (Rear Digital)> at nid 30 on hdaa1
random: unblocking device.
usbus0: 5.0Gbps Super Speed USB v3.0
usbus1: 480Mbps High Speed USB v2.0
usbus2: 480Mbps High Speed USB v2.0
ugen1.1: <Intel> at usbus1
uhub0: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
ugen0.1: <0x8086> at usbus0
uhub1: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
ugen2.1: <Intel> at usbus2
uhub2: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus2
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <ADATA SP900 5.8.2> ATA8-ACS SATA 3.x device
ada0: Serial Number 7E4920015823
ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 512bytes)
ada0: Command Queueing enabled
ada0: 244198MB (500118192 512 byte sectors)
ada0: Previously was known as ad4
ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <ST2000DM001-1ER164 CC25> ACS-2 ATA SATA 3.x device
ada1: Serial Number Z4Z1SGN2
ada1: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 1907729MB (3907029168 512 byte sectors)
ada1: quirks=0x1<4K>
ada1: Previously was known as ad6
ada2 at ahcich4 bus 0 scbus4 target 0 lun 0
ada2: <Samsung SSD 850 EVO 500GB EMT01B6Q> ACS-2 ATA SATA 3.x device
ada2: Serial Number S21HNXBG402860T
ada2: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 512bytes)
ada2: Command Queueing enabled
ada2: 476940MB (976773168 512 byte sectors)
ada2: quirks=0x1<4K>
ada2: Previously was known as ad12
ses0 at ahciem0 bus 0 scbus6 target 0 lun 0
ses0: <AHCI SGPIO Enclosure 1.00 0001> SEMB S-E-S 2.00 device
ses0: SEMB SES Device
cd0 at ahcich3 bus 0 scbus3 target 0 lun 0
cd0: <TSSTcorp CDDVDW SH-224DB SB01> Removable CD-ROM SCSI device
cd0: Serial Number R93E68DFB01WVT
cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes)
cd0: Attempt to query device size failed: NOT READY, Medium not present - tray
closed
SMP: AP CPU #1 Launched!
SMP: AP CPU #3 Launched!
SMP: AP CPU #2 Launched!
SMP: AP CPU #6 Launched!
SMP: AP CPU #7 Launched!
SMP: AP CPU #4 Launched!
SMP: AP CPU #5 Launched!
Timecounter "TSC-low" frequency 2000036900 Hz quality 1000
Root mount waiting for: usbus2 usbus1 usbus0
uhub2: 2 ports with 2 removable, self powered
uhub0: 2 ports with 2 removable, self powered
uhub1: 21 ports with 21 removable, self powered
Root mount waiting for: usbus2 usbus1 usbus0
ugen0.2: <vendor 0x046a> at usbus0
ukbd0: <vendor 0x046a product 0x0023, class 0/0, rev 2.00/2.20, addr 1> on
usbus0
kbd2 at ukbd0
ugen2.2: <vendor 0x8087> at usbus2
uhub3: <vendor 0x8087 product 0x8001, class 9/0, rev 2.00/0.00, addr 2> on
usbus2
ugen1.2: <vendor 0x8087> at usbus1
uhub4: <vendor 0x8087 product 0x8009, class 9/0, rev 2.00/0.00, addr 2> on
usbus1
uhub4: 6 ports with 6 removable, self powered
uhub3: 8 ports with 8 removable, self powered
ugen0.3: <Microsoft> at usbus0
Root mount waiting for: usbus0
ugen0.4: <American Power Conversion> at usbus0
ugen0.5: <Burr-Brown from TI> at usbus0
Trying to mount root from ufs:/dev/ada2p2 [rw]...
uhid0: <vendor 0x046a product 0x0023, class 0/0, rev 2.00/2.20, addr 1> on
usbus0
ukbd0: at uhub1, port 5, addr 1 (disconnected)
ums0: <Microsoft Microsoft Comfort Mouse 4500, class 0/0, rev 2.00/0.83, addr
2> on usbus0
uhid0: at uhub1, port 5, addr 1 (disconnected)
ums0: 5 buttons and [XYZT] coordinates ID=16
ums0: 0 buttons and [T] coordinates ID=0
uaudio0: <Burr-Brown from TI USB Audio DAC, class 0/0, rev 1.10/1.00, addr 4>
on usbus0
uaudio0: Play: 48000 Hz, 2 ch, 16-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Play: 44100 Hz, 2 ch, 16-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Play: 32000 Hz, 2 ch, 16-bit S-LE PCM format, 2x8ms buffer.
uaudio0: No recording.
uaudio0: No MIDI sequencer.
pcm8: <USB audio> on uaudio0
uaudio0: HID volume keys found.
kbd2 at vkbd0
ums0: at uhub1, port 6, addr 2 (disconnected)
kbd3 at vkbd1
kbd4 at vkbd2
kbd5 at vkbd3
em0: link state changed to UP
These are my running services:
# service -e
/etc/rc.d/hostid
/etc/rc.d/hostid_save
/etc/rc.d/cleanvar
/etc/rc.d/ip6addrctl
/etc/rc.d/devd
/etc/rc.d/newsyslog
/etc/rc.d/syslogd
/etc/rc.d/dmesg
/etc/rc.d/virecover
/usr/local/etc/rc.d/apcupsd
/usr/local/etc/rc.d/uhidd
/etc/rc.d/motd
/etc/rc.d/ntpd
/etc/rc.d/powerd
/usr/local/etc/rc.d/postfix
/usr/local/etc/rc.d/dbus
/etc/rc.d/mixer
/usr/local/etc/rc.d/microcode_update
/usr/local/etc/rc.d/hald
/etc/rc.d/sshd
/etc/rc.d/cron
/etc/rc.d/gptboot
/etc/rc.d/bgfsck
My ports are up-to-date (ports head sucked & built & installed as of "earlier
today")
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