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	Mon, 2 Apr 2001 11:57:51 -0400
Date: Mon, 2 Apr 2001 08:57:10 -0700 (PDT)
From: Gerhard Mack <gmack@innerfire.net>
To: "A.Sajjad Zaidi" <sajjad@vgkk.com>
cc: Eric Gillespie <viking@flying-brick.caverock.net.nz>,
   linux-kernel@vger.kernel.org
Subject: Re: System clock loses time at approx 17 secs per two hours
In-Reply-To: <3AC84751.88150F7@vgkk.com>
Message-ID: <Pine.LNX.4.10.10104020856450.14898-100000@innerfire.net>
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My system loses time while I use the framebuffer.

	Gerhard

On Mon, 2 Apr 2001, A.Sajjad Zaidi wrote:

> Have you considered using NTP (Network Time Protocol)?
> 
> A.Sajjad Zaidi
> 
> 
> Eric Gillespie wrote:
> 
> > 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]
> >
> > --
> >  /|   _,.:*^*:.,   |\           Cheers from the Viking family,
> > | |_/'  viking@ `\_| |            including Pippin, our cat
> > |    flying-brick    | $FunnyMail  Bilbo   : Now far ahead the Road has gone,
> >  \_.caverock.net.nz_/     5.39    in LOTR  : Let others follow it who can!
> >
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> 
> -
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> 

--
Gerhard Mack

gmack@innerfire.net

<>< As a computer I find your faith in technology amusing.

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