Re: uptime reset after about 45 days

[Miquel van Smoorenburg]

In article <Pine.LNX.4.44.0310310005090.11473-100000@xxxxxxxxxxxx>,
Maciej Zenczykowski  <maze@xxxxxxx> wrote:
>> After about 45 days or so, my uptime was reset. My idle time is correct.
>> 
>> $ cat /proc/uptime
>> 94245.37 3686026.54
>> 
>> $ cat /proc/version Linux version 2.4.20-gentoo-r1
>> (root@xxxxxxxxxxxxxxxxxxxxxx) (gcc version 3.2.2) #6 SMP Thu Apr 17
>> 14:11:34 EDT 2003
>
>Uptime is stored in jiffies which is 32bit on your arch, which results in 
>an overflow after 2^32 clock ticks. TTTicks were 100 HZ till recently 
>(overflow after 470 or so days) now, they're 1000 -> overflows after 45 
>days.  Doesn't wreck anything except for uptime display - known problem, 

No, that's only on 2.6, and it has been fixed in 2.6 too.
The 2.4 32 bits kernels run with HZ=100.

Sounds like the gentoo-kernel has just upped HZ to 1000 without
fixing these problems properly. That's .. disappointing.

Mike.

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