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SubjectRe: [Bug 819] New: uptime wrong on x86-64 (fwd)
Martin J. Bligh wrote:
> Summary: uptime wrong on x86-64
> Kernel Version: 2.5.72
> Status: NEW
> Severity: normal
> Owner: johnstul@us.ibm.com
> Submitter: johnstul@us.ibm.com
>
>
> Distribution: SLES8
> Hardware Environment: AMD64 Melody box
> Software Environment: 2.5.72
> Problem Description:
>
> uptime reports wrong value after booting
>
> Steps to reproduce:
> jstultz@elm3b31:~/linux-2.5> uptime
>
> Actual result:
> 1:19pm up 12220 days, 20:19, 1 user, load average: 0.00, 0.00, 0.00
>
> Expected result:
> 1:19pm up 15 min, 1 user, load average: 0.00, 0.01, 0.02
>
> Additional info:
> jstultz@elm3b31:~/linux-2.5> date +%s
> 1055881186
> jstultz@elm3b31:~/linux-2.5> cat /proc/stat | grep btime
> btime 1055880294
>
> I've been unable to reproduce the problem on i386, however this has also been
> reported against sparc64 by Daniel Whitener.
>
> I suspect it might have something to do w/ do_posix_clock_monotonic_gettime() on
> these arches.

Yes, most likely not setting wall_to_monotonic to -xtime at boot (see
i386/kernel/time.c last few lines).
--
George Anzinger george@mvista.com
High-res-timers: http://sourceforge.net/projects/high-res-timers/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml

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