Messages in this thread |  | | | Date | Mon, 2 Apr 2001 15:58:13 +1200 (NZST) | | From | Eric Gillespie <> | | Subject | System clock loses time at approx 17 secs per two hours |
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First off, CC: back to me, as my machine can't handle an estimated 200 messages a day for me to sign up to the list 8-( - Anyway..
I updated my kernel to 2.4.3 when the patch was released. (Tarballs - wonderful things!)
However, I noticed that the kernel timer loses seconds over time with both the 2.4.2 and 2.4.3 kernels (seems to be at a steady rate...), and the rate of loss is NOT related to the CMOS clock. I compared against a 2.2.18 kernel, which lost about 1 second in 14 hours - about what I'd expect with my machine).
Now, has anybody else noticed their 2.4.x kernel losing time? If so, and anyone knows how I can fix it so it behaves like 2.2.18, I'd be grateful.
<offtopic> Can't say I like the April Fools release on "behalf" of Linus. </offtopic>
=================== Some relevant data: Linux version 2.4.3 (root@brick.flying-brick.caverock.net.nz) (gcc version 2.95.3 19991030 (prerelease)) #2 Sat Mar 31 09:52:39 NZST 2001 Software present (among others) Gnu C 2.95.3 Gnu make 3.77 binutils 2.9.5.0.31 Linux C Library 2.2.2 Dynamic linker (ldd) 2.2.2
Processor information (from /proc/cpuinfo) for a Cyrix-M II-300: processor : 0 vendor_id : CyrixInstead cpu family : 6 model : 2 model name : M II 3.5x Core/Bus Clock stepping : 8 cpu MHz : 233.030 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu de tsc msr cx8 pge cmov mmx cyrix_arr bogomips : 465.30
Loaded driver and hardware information (/proc/ioports, /proc/iomem) ==Drivers== 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 0213-0213 : isapnp read 0220-022f : soundblaster 02f8-02ff : serial(auto) 0300-031f : eth0 0376-0376 : ide1 0388-038b : Yamaha OPL3 03c0-03df : vesafb 03f6-03f6 : ide0 0a79-0a79 : isapnp write 0cf8-0cff : PCI conf1 4000-400f : Silicon Integrated Systems [SiS] 5513 [IDE] 4000-4007 : ide0 4008-400f : ide1 e000-e07f : Silicon Integrated Systems [SiS] 5597/5598 VGA ==memory info== 00000000-0009efff : System RAM 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000f0000-000fffff : System ROM 00100000-01cfffff : System RAM 00100000-001e9c4f : Kernel code 001e9c50-002445d7 : Kernel data 08000000-082fffff : vesafb e1000000-e13fffff : Silicon Integrated Systems [SiS] 5597/5598 VGA e1400000-e140ffff : Silicon Integrated Systems [SiS] 5597/5598 VGA e1410000-e141ffff : Rockwell International HCF 56k V90 FaxModem [7.5.] PCI information ('lspci -vvv' as root) ==PCI Information== 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 5597 [SiS5582] (rev 10) 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 set
00:01.0 ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513 (rev 01) 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 set
00:01.1 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev d0) (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=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 set Interrupt: pin A routed to IRQ 14 Region 0: I/O ports at <ignored> Region 1: I/O ports at <ignored> Region 2: I/O ports at <ignored> Region 3: I/O ports at <ignored> Region 4: I/O ports at 4000 [size=16]
00:0b.0 Serial controller: Rockwell International HCF 56k V90 FaxModem (rev 01) (prog-if 00 [8250]) Subsystem: Aztech System Ltd MDP3858SP-A SVD Modem 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 set Interrupt: pin A routed to IRQ 11 Region 0: Memory at e1410000 (32-bit, non-prefetchable) [size=64K] Capabilities: [40] Power Management version 1 Flags: PMEClk- AuxPwr+ DSI+ D1+ D2+ PME+ Status: D0 PME-Enable- DSel=0 DScale=3 PME- 00:14.0 VGA compatible controller: Silicon Integrated Systems [SiS] 5597/5598 VGA (rev 68) (prog-if 00 [VGA]) Subsystem: Silicon Integrated Systems [SiS]: Unknown device 0200 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 0 Region 0: Memory at e1000000 (32-bit, prefetchable) [size=4M] Region 1: Memory at e1400000 (32-bit, non-prefetchable) [size=64K] Region 2: I/O ports at e000 [size=128] Expansion ROM at <unassigned> [disabled] [size=32K]
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