Re: 2.4.x kernel uptime counter problem

From: Bill Davidsen
Date: Sat Jan 21 2006 - 08:26:03 EST


Jan Engelhardt wrote:

Or use some dedicated programs, IIRC there is a "uprecords" program
(http://podgorny.cz/moin/Uptimed). Does require no reboot and should work
right away.


I never understood uptime anyway, the boot time, to the second, is available in
/proc/stat (btime), and it isn't that hard to turn it into whatever format you
find human readable. I have a perl script which presents uptime as fractional
days, days, hours, min, sec, and/or boot time. Took me about two minutes to
write.



uptime or uptimed/uprecords? (That's two different things.)
The "uptime" commands is the same as "w | head -n1" (which reads /proc/uptime) and therefore suffers from jiffies wrap.


I understand why it has this limitation, the question is why it was written to have it, when correct function is easily possible. I understand extra effort to get it right, but not to get it wrong...

--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979

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