uptime wrong in 2.5.70

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Hi,

I a got a test vmware running with a 2.5.70 and I have sligh "overflow" with my uptime.

gentoo root # uptime
22:29:47 up 14667 days, 19:08, 3 users, load average: 0.00, 0.00, 0.00

I think thats a bit too much ;)

Linux gentoo.tequila.intern 2.5.80 #1 Tue May 27 14:42:51 JST 2003 i686 Intel(R) Penitum(R) 4 CPU 1.60GHz GenuineIntel GNU/Linux running on a
Gentoo System (unstable tree)

- --
Clemens Schwaighofer - IT Engineer & System Administration
==========================================================
Tequila Japan, 6-17-2 Ginza Chuo-ku, Tokyo 104-8167, JAPAN
Tel: +81-(0)3-3545-7703 Fax: +81-(0)3-3545-7343
http://www.tequila.jp
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Doesn't ring any bell yet. Can you cat /proc/uptime and /proc/stat output? Is this immediately after booting? Reproducable?

Tim

I had this happen yesterday with a 2.5.70-bkWhatever from about three days ago.

Immediately after boot my uptime was reported as 14664 days, 13 hours. I didn't do a cat of either /proc/uptime or /proc/stat. If the bug hits again, I'll do so and post the results.

Alex Goddard
[email protected]

Uptime currently reports a conversion of jiffies which is currently jacked up to a few seconds short of 32 bits worth of jiffies (for testing purposes).

I have a patch pending with Andrew to convert uptime to use the POSIX monotonic clock which a) will start at 0 at boot time and b) will account for NTP clock adjustments. Should give an uptime real close to the best of watches (or even better) :)

-g

George Anzinger   [email protected]
High-res-timers:  http://sourceforge.net/projects/high-res-timers/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml

Any access to jiffies should be subtracting INITIAL_JIFFIES, so uptime should still work correctly. I've been unable to reproduce this problem, so if anyone else sees it I'd love to get more info.

Sounds interesting.

-john

That would explain being off by 49 days, 17 hours (or 497 days if HZ=100).
However, the two reported cases are roughly 295 as much, and I have no clue about that number.

Tim

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gentoo root # cat /proc/uptime
1267537132.92 278990.27
gentoo root # cat /proc/stat
cpu 1542550 0 3915839 27412781 392624
cpu0 1542550 0 3915839 27412781 392624
intr 333933393 332637964 7735 0 0 0 0 3 0 2 0 0 0 7417 0 0 16 0 622268 657988 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 15529955
btime 4083180513
processes 659768
procs_running 3
procs_blocked 0
gentoo root # uptime
16:59:20 up 14670 days, 13:39, 3 users, load average: 1.22, 1.04, 0.49

I will reboot the box now and see if it happens again. but as I read in other postings to this thread it seams to happen again.

thought I got anohter mail, from David Schwartz who claims that this is because <quote> This is due to a known bug in the Penitum(R) processor, which Linux has never claimed to support. </quote>

- --
Clemens Schwaighofer - IT Engineer & System Administration
==========================================================
Tequila Japan, 6-17-2 Ginza Chuo-ku, Tokyo 104-8167, JAPAN
Tel: +81-(0)3-3545-7703 Fax: +81-(0)3-3545-7343
http://www.tequila.jp
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hi,

i have read the thread "uptime wrong in 2.5.70", but it did not occur to me or i've just not noticed. now i habve 2.5.72 on an Alpha machine, and my uptime is wrong too:

evil@lila:~$ uptime
20:39:43 up 12223 days, 18:39,  2 users,  load average: 1.00, 1.15, 1.13
evil@lila:~$
evil@lila:~$ date
Fri Jun 20 20:39:47 CEST 2003
evil@lila:~$

someone asked for /proc/stat and /proc/uptime, so i'll put it in here too:

evil@lila:~$ cat /proc/uptime
1056134456.56 119.85
evil@lila:~$
evil@lila:~$ cat /proc/stat
cpu  19532572 231368852 6161047 86525 35469
cpu0 19532572 231368852 6161047 86525 35469
intr 268431707 0 18 0 0 0 0 0 0 257197217 0 0 264591 3 0 0 10969878
ctxt 5528866
btime 1055883310
processes 251305
procs_running 2
procs_blocked 0
evil@lila:~$

i'll check if it's reproduceable.

Thanks,
Christian.

yes, it is.