[Bug 8634] New: Unstable clocksource reported

[Bug 8634] New: Unstable clocksource reported

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=8634

           Summary: Unstable clocksource reported
           Product: Power Management
           Version: 2.5
     KernelVersion: 2.6.21.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
        AssignedTo: cpufreq@www.linux.org.uk
        ReportedBy: patrick.matthaei@web.de


Most recent kernel where this bug did not occur: Not known
Distribution: Debian Sid
Hardware Environment: AMD Athlon64 San Diego 4000+
Software Environment: Tickless Timer Support (64bit CPU, but 32bit system)
Problem Description:
Every time if I activate the 'ondemand' powersave gorvener, dmesg reports
following:

Time: acpi_pm clocksource has been installed.
Clocksource tsc unstable (delta = -245560788 ns)

This thing needs at booting up ~ 2-10 seconds, which is a lot of time, so I
think this is a bug.

My kernel config with all my inbuilded powersave features etc. is in attached.

Steps to reproduce:
Just do a "/bin/echo 'ondemand' >
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor".


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[Bug 8634] Unstable clocksource reported

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=8634





------- Comment #1 from patrick.matthaei@web.de  2007-06-15 13:40 -------
Created an attachment (id=11762)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=11762&action=view)
My Kernel config


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[Bug 8634] Unstable clocksource reported

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=8634


patrick.matthaei@web.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |patrick.matthaei@web.de




------- Comment #2 from patrick.matthaei@web.de  2007-06-16 00:08 -------
Some additional infos:

the-me:~# cat
/sys/devices/system/clocksource/clocksource0/available_clocksource
acpi_pm pit jiffies tsc

the-me:~# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 55
model name      : AMD Athlon(tm) 64 Processor 4000+
stepping        : 2
cpu MHz         : 1000.000
cache size      : 1024 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 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext
3dnow pni lahf_lm ts fid vid ttp
bogomips        : 2011.84
clflush size    : 64


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[Bug 8634] Unstable clocksource reported

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=8634


bunk@stusta.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|patrick.matthaei@web.de     |tglx@linutronix.de,
                   |                            |mingo@elte.hu,
                   |                            |bunk@stusta.de
         AssignedTo|cpufreq@www.linux.org.uk    |johnstul@us.ibm.com
          Component|cpufreq                     |Other
            Product|Power Management            |Timers




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