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-   -   uptime dropped dramatically, but no reboot logged anywhere (

glt 04-22-2010 03:29 PM

uptime dropped dramatically, but no reboot logged anywhere
Hi Guys,

This is an observation of something that I can't explain.
Its not a problem in itself.

I happen to log on to our most reliable server to check
some other issue. Just to gloat I decided to look at the
uptime. Last count was >450 days. Suddenly its 20 days!
"Huh!", thinks I, "Must have been a power outage I missed".
So I looked in messages -no sign of a reboot in there.
Eventually I looked at dmesg. Its timestamp is:
Nov 20 2008. That's 516 days ago which I feel is roughly
what I would have expected.

So the question is, "Does uptime have maximum value?".
If not then what could be going on??


Redhat Linux Release 9
Yes. Its way old! Nothing I can do about that.

DrLove73 04-22-2010 04:45 PM

It is know bug on those old kernels to reset around 500 days.

glt 04-23-2010 08:00 AM

Hi DrLove73,

Thanks for that. I assumed as much.


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