Messages in this thread | | | From | Lkm <> | Subject | PROBLEM: Hardware clock instable | Date | Wed, 4 Jun 2008 14:02:39 +0200 |
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Hello all,
i work in a web hosting compagny. We have a strange problem on many servers. The hardware clock of several server is totaly instable. This happen on many server, not all. Symptoms:
root@computer:~# date && hwclock Wed Jun 4 13:53:21 CEST 2008 Sat Jun 7 20:23:16 2008 -0.576925 seconds
root@computer:~# hwclock --systohc
root@computer:~# date && hwclock Wed Jun 4 13:53:34 CEST 2008 Wed Jun 4 13:53:36 2008 -0.835749 seconds
(2 seconds !)
root@rd10:~# date && hwclock Wed Jun 4 13:53:42 CEST 2008 Wed Jun 4 13:54:02 2008 -0.779573 seconds
(20 seconds !!)
I have try to pass clock or clocksource= hpet, pti to the kernel at boot: same troubles.
Kernel information: cat /proc/version Linux version 2.6.24.2 (root@XXXXXXX ) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)) #1 SMP Wed Feb 20 15:40:12 CET 2008
cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 6 cpu MHz : 797.548 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1596.12 clflush size : 32
processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 6 cpu MHz : 797.548 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1595.08 clflush size : 32
cat /proc/ioports 0000-001f : dma1 0020-0021 : pic1 0040-0043 : timer0 0050-0053 : timer1 0060-006f : keyboard 0070-0077 : rtc 0080-008f : dma page reg 00a0-00a1 : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : 0000:00:0f.1 01f0-01f7 : 0000:00:0f.1 01f0-01f7 : ide0 0220-0223 : ACPI PM1a_EVT_BLK 0230-0231 : ACPI PM1a_CNT_BLK 0240-0243 : ACPI PM_TMR 02f8-02ff : serial 0376-0376 : 0000:00:0f.1 03c0-03df : vga+ 03f2-03f5 : floppy 03f6-03f6 : 0000:00:0f.1 03f6-03f6 : ide0 03f7-03f7 : floppy DIR 03f8-03ff : serial 0408-040f : pnp 00:01 0cf8-0cff : PCI conf1 0f50-0f58 : pnp 00:01 1800-18ff : 0000:00:04.0 2000-20ff : 0000:00:01.0 2000-20ff : cpqarray 2400-243f : 0000:00:02.0 2400-243f : e100 2800-28ff : 0000:00:03.0 2c00-2c0f : 0000:00:0f.1
cat /proc/iomem 00000000-0009f7ff : System RAM 0009f800-0009ffff : reserved 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000e8000-000edfff : Adapter ROM 000f0000-000fffff : System ROM 00100000-1fffbfff : System RAM 00200000-005c7a77 : Kernel code 005c7a78-00717f7b : Kernel data 0075e000-007cfbc7 : Kernel bss 1fffc000-1fffffff : ACPI Tables 30000000-300fffff : 0000:00:02.0 30100000-3017ffff : 0000:00:01.0 30180000-3019ffff : 0000:00:03.0 c3000000-c3ffffff : 0000:00:03.0 c4dfef00-c4dfefff : 0000:00:04.0 c4dff000-c4dfffff : 0000:00:03.0 c4e00000-c4efffff : 0000:00:02.0 c4e00000-c4efffff : e100 c4fff000-c4ffffff : 0000:00:02.0 c4fff000-c4ffffff : e100 c5000000-c5ffffff : 0000:00:01.0 c6000000-c6ffffff : 0000:00:01.0 fec00000-fec0ffff : reserved fee00000-fee0ffff : reserved fff80000-ffffffff : reserved
lspci -vvvv 00:00.0 Host bridge: Broadcom CNB20LE Host Bridge (rev 06) 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, Cache Line Size: 32 bytes
00:00.1 Host bridge: Broadcom CNB20LE Host Bridge (rev 06) 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, Cache Line Size: 32 bytes
00:01.0 RAID bus controller: LSI Logic / Symbios Logic 53C1510 (rev 02) Subsystem: Compaq Computer Corporation Integrated Array Controller 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: 192 (7500ns min, 2000ns max), Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 16 Region 0: I/O ports at 2000 [size=256] Region 1: Memory at c6000000 (32-bit, non-prefetchable) [size=16M] Region 2: Memory at c5000000 (32-bit, non-prefetchable) [size=16M] [virtual] Expansion ROM at 30100000 [disabled] [size=512K] Capabilities: [40] 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-
00:02.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 08) Subsystem: Compaq Computer Corporation NC3163 Fast Ethernet NIC (embedded, WOL) 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 (2000ns min, 14000ns max), Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 17 Region 0: Memory at c4fff000 (32-bit, non-prefetchable) [size=4K] Region 1: I/O ports at 2400 [size=64] Region 2: Memory at c4e00000 (32-bit, non-prefetchable) [size=1M] [virtual] Expansion ROM at 30000000 [disabled] [size=1M] Capabilities: [dc] Power Management version 2 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=2 PME-
00:03.0 VGA compatible controller: ATI Technologies Inc 3D Rage IIC 215IIC [Mach64 GT IIC] (rev 7a) (prog-if 00 [VGA]) Subsystem: ATI Technologies Inc Rage IIC 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 (2000ns min), Cache Line Size: 32 bytes Region 0: Memory at c3000000 (32-bit, prefetchable) [size=16M] Region 1: I/O ports at 2800 [size=256] Region 2: Memory at c4dff000 (32-bit, non-prefetchable) [size=4K] [virtual] Expansion ROM at 30180000 [disabled] [size=128K] Capabilities: [5c] 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-
00:04.0 System peripheral: Compaq Computer Corporation Advanced System Management Controller Subsystem: Compaq Computer Corporation Unknown device b0f3 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 A routed to IRQ 255 Region 0: I/O ports at 1800 [size=256] Region 1: Memory at c4dfef00 (32-bit, non-prefetchable) [size=256]
00:0f.0 ISA bridge: Broadcom OSB4 South Bridge (rev 51) Subsystem: Broadcom OSB4 South 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
00:0f.1 IDE interface: Broadcom OSB4 IDE Controller (prog-if 8a [Master SecP PriP]) 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 Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled] [size=8] Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled] [size=1] Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled] [size=8] Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled] [size=1] Region 4: I/O ports at 2c00 [size=16]
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