Messages in this thread | | | Date | Thu, 05 Sep 2002 00:59:28 -0400 | From | George Toft <> | Subject | PROBLEM: Kernel loses time - 1 min each 10 minutes |
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[1.] One line summary of the problem:
Kernel loses 1 minute per 10 minutes while buring CD's with xcdroast (cdrecord).
[2.] Full description of the problem/report:
I burned several CD-Rs one night and noticed my two Linux boxes, which sync periodically with the Navy's atomic clock, were over 30 minutes apart. My SuSE box, with the CD-R, had lost time while burning CD-R's. CD burning program is xcdroast, which uses cdrecord on the backend.
[3.] Keywords (i.e., modules, networking, kernel):
kernel, time
[4.] Kernel version (from /proc/version):
# cat /proc/version Linux version 2.4.10-4GB (root@Pentium.suse.de) (gcc version 2.95.3 20010315 (SuSE)) #1 Fri Sep 28 17:20:21 GMT 2001
[5.] Output of Oops.. message (if applicable) with symbolic information resolved (see Documentation/oops-tracing.txt)
N/A
[6.] A small shell script or example program which triggers the problem (if possible)
See description (2. above).
[7.] Environment [7.1.] Software (add the output of the ver_linux script here)
donelle:/usr/src/linux-2.4.10.SuSE # sh scripts/ver_linux If some fields are empty or look unusual you may have an old version. Compare to the current minimal requirements in Documentation/Changes.
Linux donelle 2.4.10-4GB #1 Fri Sep 28 17:20:21 GMT 2001 i686 unknown
Gnu C 2.95.3 Gnu make 3.79.1 binutils 2.11.90.0.29 util-linux 2.11i mount 2.11i modutils 2.4.8 e2fsprogs 1.24a reiserfsprogs 3.x.0k-pre9 PPP 2.4.1 Linux C Library x 1 root root 1384040 Jul 14 09:43 /lib/libc.so.6 Dynamic linker (ldd) 2.2.4 Procps 2.0.7 Net-tools 1.60 Kbd 1.04 Sh-utils 2.0 Modules Loaded st sg tuner tvaudio bttv i2c-algo-bit videodev nls_iso8859-1 nls_cp437 via686a i2c-isa snd-pcm-oss snd-pcm-plugin snd-mixer-oss ipt_MASQUERADE ipt_LOG ipt_limit ipt_REJECT ipt_state iptable_nat ip_conntrack_ftp ip_conntrack iptable_filter ip_tables i2c-proc i2c-core snd-seq-midi snd-seq-midi-event snd-seq snd-card-ens1371 snd-ens1371 snd-pcm snd-timer snd-rawmidi snd-seq-device snd-ac97-codec snd-mixer snd soundcore lp ipv6 vmnet vmppuser parport_pc parport vmmon evdev input uhci usbcore 8139too lvm-mod ext3 jbd ide-scsi
[7.2.] Processor information (from /proc/cpuinfo):
# cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 3 model name : AMD Duron(tm) Processor stepping : 0 cpu MHz : 632.759 cache size : 64 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow bogomips : 1261.56
[7.3.] Module information (from /proc/modules):
# cat /proc/modules st 25056 0 (autoclean) (unused) sg 23328 0 (autoclean) tuner 4496 1 (autoclean) tvaudio 8128 0 (autoclean) (unused) bttv 56176 0 (autoclean) i2c-algo-bit 7040 1 (autoclean) [bttv] videodev 4544 2 (autoclean) [bttv] nls_iso8859-1 2880 1 (autoclean) nls_cp437 4384 1 (autoclean) via686a 8032 0 (unused) i2c-isa 1200 0 (unused) snd-pcm-oss 18368 1 (autoclean) snd-pcm-plugin 14480 0 (autoclean) [snd-pcm-oss] snd-mixer-oss 4768 2 (autoclean) [snd-pcm-oss] ipt_MASQUERADE 1200 1 (autoclean) ipt_LOG 3152 11 (autoclean) ipt_limit 960 11 (autoclean) ipt_REJECT 2784 35 (autoclean) ipt_state 624 4 (autoclean) iptable_nat 12656 0 (autoclean) [ipt_MASQUERADE] ip_conntrack_ftp 3184 0 (unused) ip_conntrack 12848 3 [ipt_MASQUERADE ipt_state iptable_nat ip_conntrack_ftp] iptable_filter 1728 0 (unused) ip_tables 10496 9 [ipt_MASQUERADE ipt_LOG ipt_limit ipt_REJECT ipt_state iptable_nat iptable_filter] i2c-proc 5936 0 [via686a] i2c-core 12288 0 [tuner tvaudio bttv i2c-algo-bit via686a i2c-isa i2c-proc] snd-seq-midi 3280 0 (unused) snd-seq-midi-event 2800 0 [snd-seq-midi] snd-seq 39584 0 [snd-seq-midi snd-seq-midi-event] snd-card-ens1371 1984 3 snd-ens1371 9344 0 [snd-card-ens1371] snd-pcm 29184 0 [snd-pcm-oss snd-pcm-plugin snd-ens1371] snd-timer 8336 0 [snd-seq snd-pcm] snd-rawmidi 9312 0 [snd-seq-midi snd-ens1371] snd-seq-device 3744 0 [snd-seq-midi snd-seq snd-rawmidi] snd-ac97-codec 23456 0 [snd-ens1371] snd-mixer 23488 0 [snd-mixer-oss snd-ens1371 snd-ac97-codec] snd 31344 1 [snd-pcm-oss snd-pcm-plugin snd-mixer-oss snd-seq-midi snd-seq-midi-event snd-seq snd-card-ens1371 snd-ens1371 snd-pcm snd-timer snd-rawmidi snd-seq-device snd-ac97-codec snd-mixer] soundcore 3280 5 [snd] lp 5248 0 (autoclean) ipv6 124736 -1 (autoclean) vmnet 17152 6 vmppuser 6720 0 (unused) parport_pc 19280 1 parport 22240 1 [lp vmppuser parport_pc] vmmon 17920 3 evdev 4160 0 (unused) input 3072 0 [evdev] uhci 22400 0 (unused) usbcore 47264 1 [uhci] 8139too 11936 1 (autoclean) lvm-mod 45632 6 (autoclean) ext3 61312 5 jbd 41504 5 [ext3] ide-scsi 7552 0
[7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
# cat /proc/ioports 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0070-007f : rtc 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(auto) 0376-0376 : ide1 0378-037a : parport0 037b-037f : parport0 03c0-03df : vesafb 03f6-03f6 : ide0 03f8-03ff : serial(auto) 0cf8-0cff : PCI conf1 4000-40ff : PCI device 1106:3057 5000-500f : PCI device 1106:3057 6000-607f : PCI device 1106:3057 6000-607f : via686a-sensors c000-c00f : PCI device 1106:0571 c000-c007 : ide0 c008-c00f : ide1 c400-c41f : PCI device 1106:3038 c400-c41f : usb-uhci c800-c81f : PCI device 1106:3038 c800-c81f : usb-uhci cc00-ccff : PCI device 10ec:8139 cc00-ccff : 8139too d000-d03f : PCI device 1274:5880 d000-d03f : Ensoniq AudioPCI d400-d407 : PCI device 1095:0649 d800-d803 : PCI device 1095:0649 dc00-dc07 : PCI device 1095:0649 e000-e003 : PCI device 1095:0649 e400-e40f : PCI device 1095:0649 e400-e407 : ide2 e408-e40f : ide3
# cat /proc/iomem 00000000-0009fbff : System RAM 0009fc00-0009ffff : reserved 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000f0000-000fffff : System ROM 00100000-2ffeffff : System RAM 00100000-002425c9 : Kernel code 002425ca-002a1d0b : Kernel data 2fff0000-2fff2fff : ACPI Non-volatile Storage 2fff3000-2fffffff : ACPI Tables d0000000-d3ffffff : PCI device 1106:0305 d4000000-dbffffff : PCI Bus #01 d4000000-d7ffffff : PCI device 5333:8a13 d4000000-d43fffff : vesafb dd000000-dd000fff : PCI device 109e:036e dd000000-dd000fff : bttv dd001000-dd001fff : PCI device 109e:0878 dd002000-dd0020ff : PCI device 10ec:8139 dd002000-dd0020ff : 8139too ffff0000-ffffffff : reserved
[7.5.] PCI information ('lspci -vvv' as root)
# lspci -vvv 00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 02) Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- Latency: 0 Region 0: Memory at d0000000 (32-bit, prefetchable) [size=64M] Capabilities: [a0] AGP version 2.0 Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2 Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none> Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR+ Latency: 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000f000-00000fff Memory behind bridge: d4000000-dbffffff Prefetchable memory behind bridge: fff00000-000fffff BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B- Capabilities: [80] Power Management version 2 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 22) Subsystem: VIA Technologies, Inc. VT82C686/A PCI to ISA Bridge Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0
00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 10) (prog-if 8a [Master SecP PriP]) Subsystem: VIA Technologies, Inc. Bus Master IDE Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 Region 4: I/O ports at c000 [size=16] Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:07.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00 [UHCI]) Subsystem: Unknown device 0925:1234 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32, cache line size 08 Interrupt: pin D routed to IRQ 11 Region 4: I/O ports at c400 [size=32] Capabilities: [80] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:07.3 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00 [UHCI]) Subsystem: Unknown device 0925:1234 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32, cache line size 08 Interrupt: pin D routed to IRQ 11 Region 4: I/O ports at c800 [size=32] Capabilities: [80] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 30) Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin ? routed to IRQ 9 Capabilities: [68] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10) Subsystem: Realtek Semiconductor Co., Ltd. RT8139 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (8000ns min, 16000ns max) Interrupt: pin A routed to IRQ 10 Region 0: I/O ports at cc00 [size=256] Region 1: Memory at dd002000 (32-bit, non-prefetchable) [size=256] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable+ DSel=0 DScale=0 PME-
00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 11) Subsystem: Hauppauge computer works Inc. WinTV/GO Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (4000ns min, 10000ns max) Interrupt: pin A routed to IRQ 5 Region 0: Memory at dd000000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0a.1 Multimedia controller: Brooktree Corporation Bt878 (rev 11) Subsystem: Hauppauge computer works Inc. WinTV/GO Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (1000ns min, 63750ns max) Interrupt: pin A routed to IRQ 5 Region 0: Memory at dd001000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0e.0 Multimedia audio controller: Ensoniq 5880 AudioPCI (rev 02) Subsystem: Ensoniq Creative Sound Blaster AudioPCI128 Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort+ <MAbort+ >SERR- <PERR- Latency: 64 (3000ns min, 32000ns max) Interrupt: pin A routed to IRQ 5 Region 0: I/O ports at d000 [size=64] Capabilities: [dc] Power Management version 1 Flags: PMEClk- DSI+ D1- D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:10.0 RAID bus controller: CMD Technology Inc PCI0649 (rev 01) Subsystem: CMD Technology Inc PCI0649 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 (500ns min, 1000ns max) Interrupt: pin A routed to IRQ 11 Region 0: I/O ports at d400 [size=8] Region 1: I/O ports at d800 [size=4] Region 2: I/O ports at dc00 [size=8] Region 3: I/O ports at e000 [size=4] Region 4: I/O ports at e400 [size=16] Expansion ROM at <unassigned> [disabled] [size=512K] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=3 PME-
01:00.0 VGA compatible controller: S3 Inc. 86c368 [Trio 3D/2X] (rev 02) (prog-if 00 [VGA]) Subsystem: S3 Inc. Trio3D/2X Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (1000ns min, 63750ns max) Region 0: Memory at d4000000 (32-bit, non-prefetchable) [size=64M] Expansion ROM at <unassigned> [disabled] [size=64K] Capabilities: [dc] Power Management version 1 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [80] AGP version 1.0 Status: RQ=31 SBA- 64bit- FW- Rate=x1,x2 Command: RQ=0 SBA- AGP- 64bit- FW- Rate=x2
[7.6.] SCSI information (from /proc/scsi/scsi)
# cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: LITE-ON Model: LTR-0841 Rev: MS84 Type: CD-ROM ANSI SCSI revision: 02
[7.7.] Other information that might be relevant to the problem (please look in /proc and include all information that you think to be relevant):
When not using CD-R, system is usually only a few seconds off each week.
[X.] Other notes, patches, fixes, workarounds: Workaround: # while [ 1 ]; do sleep 1800; /etc/cron.weekly/settime; done
# cat /etc/cron.weekly/settime #!/bin/bash
ntpdate tock.usno.navy.mil hwclock --systohc - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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