Re: Clocksource tsc unstable (delta = 51799116882 ns)

[Sjoerd Hardeman <sjoerd@lorentz.leidenuniv.nl>]

Nicolas BERCHER wrote:
> Sjoerd Hardeman a écrit :
> > Nicolas BERCHER wrote:
> > > Celejar a écrit :
> > > > On Mon, 22 Sep 2008 22:26:36 +0200
> > > > Nicolas BERCHER <nbercher@yahoo.fr> wrote:
> > > >
> > > >  
> > > > > Hi,
> > > > >
> > > > > Since yesterday, some processes are really slow on my Lenny/Sid.
> > > > > KDE clock is 10 hours late, bash is really really slow, keyboard 
> > > > > repetition seems broken or really long to start, etc.
> > > > >
> > > > > I found this in /var/log/messages:
> > > > > [1510354.692239] Clocksource tsc unstable (delta = 51799116882 ns)
> > > > >     
> > > >
> > > > I generally see messages like that; I always assumed they were 
> > > > harmless:
> > > >
> > > > Sep 23 00:13:54 lizzie kernel: Clocksource tsc unstable (delta = 
> > > > -85149529 ns)
> > > >
> > > >
> > > > Celejar
> > > Thank you for your answer.
> > > Today, this message is not harmless: many things are so slow...
> > > As I don't want to reboot my Debian (so bad to do that !), I'm 
> > > waiting for possible fixes from the list and Google too.
> > >
> > > Strangely Icedove & Firefox are ok, so I can read/write e-mails...
> > >
> > > Apache/PHP/mySQL are a little slow too.
> > > In general functionalities that require a specific timing are really 
> > > slow, even the bash/Konsole completion beep that spends about 10 
> > > seconds !
> > >
> > > Any idea ?
> > > N.
> > I doubt the "Clocksource tsc unstable"-error causes the slowness, as 
> > that is a common error on some of my machines too. Apparently 
> > something is hogging your system. Can you give us the result of top?
> >
> > Sjoerd
> Since my last mail, I rebooted the machine (using reset, init 6 wasn't 
> able to reboot after a few minutes).
> Just before reseting, top was long to start displaying stats and then it 
> started to work nice (normal speed) and showed 9999% CPU usage on 
> certain processes !
> It was not often the case, some stats snaps looked good.
Well, that at least explains why the machine was/is slow. Killing these 
processes might help.
> Then, I had troubles when I logged into KDE: it first failed (kind of 
> freeze while waiting for something that never comes), I restarted X 
> (ctrl+alt+backspace) and then KDE login was ok.
> In KDE, I now see that the audio hardware is no more recognized 
> (according to kmix & amarok/xine (failed to start xine engine)), but 
> snd* modules seems to be loaded as appropriate...
Strange, although a /etc/init.d/alsa-utils restart sometimes works, or 
realoding the sound modules. Then, you probably also have to restart kdm
> I wonder about a hardware failure...
> This Debian was installed a month ago and I didn't any problem before, 
> even on the Fedora I had before for a year on this hardware.
That can of course be. Try running memcheck, and try booting from a 
live-cd might give you some clues.
> /var/log/messages also reports some ACPI errors & warnings (but I don't 
> really understand them):
Sorry, I'm centrainly not an acpi-expert. Let's keep the discussion on 
the list, maybe someone else can help.
> # grep -i acpi /var/log/messages
> Sep 23 09:24:16 ocarina kernel: [    0.000000] ACPI Error 
> (tbxfroot-0218): A valid RSDP was not found [20070126]
> Sep 23 09:24:16 ocarina kernel: [    0.000000] Nvidia board detected. 
> Ignoring ACPI timer override.
> Sep 23 09:24:16 ocarina kernel: [    0.000000] If you got timer trouble 
> try acpi_use_timer_override
> Sep 23 09:24:16 ocarina kernel: [    0.101203] ACPI: Core revision 20070126
> Sep 23 09:24:16 ocarina kernel: [    0.101235] ACPI Exception 
> (tbxface-0629): AE_NO_ACPI_TABLES, While loading namespace from ACPI 
> tables [20070126]
> Sep 23 09:24:16 ocarina kernel: [    0.349298] ACPI: Interpreter disabled.
> Sep 23 09:24:16 ocarina kernel: [    0.349334] pnp: PnP ACPI: disabled
> Sep 23 09:24:16 ocarina kernel: [    0.404070] ACPI Error 
> (evxfevnt-0186): Could not enable RealTimeClock event [20070126]
> Sep 23 09:24:16 ocarina kernel: [    0.404077] ACPI Warning 
> (evxface-0145): Could not enable fixed event 4 [20070126]
> Sep 23 09:24:16 ocarina kernel: [    1.501108] thermal: Unknown symbol 
> acpi_processor_set_thermal_limit
> Sep 23 09:24:16 ocarina kernel: [   53.599411] acpi_cpufreq: Unknown 
> symbol acpi_processor_notify_smm
> Sep 23 09:24:16 ocarina kernel: [   53.599471] acpi_cpufreq: Unknown 
> symbol acpi_processor_unregister_performance
> Sep 23 09:24:16 ocarina kernel: [   53.599626] acpi_cpufreq: Unknown 
> symbol acpi_processor_preregister_performance
> Sep 23 09:24:16 ocarina kernel: [   53.599697] acpi_cpufreq: Unknown 
> symbol acpi_processor_register_performance
> Sep 23 09:24:16 ocarina kernel: [   53.268210] acpi_cpufreq: Unknown 
> symbol acpi_processor_notify_smm
> Sep 23 09:24:16 ocarina kernel: [   53.268269] acpi_cpufreq: Unknown 
> symbol acpi_processor_unregister_performance
> Sep 23 09:24:16 ocarina kernel: [   53.268424] acpi_cpufreq: Unknown 
> symbol acpi_processor_preregister_performance
> Sep 23 09:24:16 ocarina kernel: [   53.268495] acpi_cpufreq: Unknown 
> symbol acpi_processor_register_performance
> Sep 23 09:24:54 ocarina kernel: [   82.751323] NVRM: failed to register 
> with the ACPI subsystem!
> Sep 23 09:29:27 ocarina kernel: [  353.257360] NVRM: failed to 
> unregister from the ACPI subsystem!
> Sep 23 09:29:27 ocarina kernel: [  353.333124] NVRM: failed to register 
> with the ACPI subsystem!
>
>
> Thanks for help, I don't understand yet what kind of problems I have...
> N.

Attachment: signature.asc
Description: OpenPGP digital signature