[hobbit] Rrd not updating

[Henrik Stoerner]

On Tue, Mar 25, 2008 at 09:40:12AM -0700, Sloan wrote:
> Henrik Stoerner wrote:
>> On Tue, Mar 25, 2008 at 02:12:42PM +0100, Charles Goyard wrote:
>>   
>>> On our setup, the problem comes from a counter overflow in uptime
>>> handling on some SCO : after 248 days of uptime, the uptime is reported
>>> negative, and the rrd handler misses the expression (no "up:").
>>>     
>>
>> Ahh - the old 31-bit timer tick issue. Linux has the same problem
>> because a timer ticks at 100 Hz using a signed 32-bit integer; so
>> 2^31 / (24*60*60*100) = 248 days and a bit.
>>   
>
> That's news to me -

Sorry, I should have written "Linux HAD the same problem" (past tense).
This was fixed somewhere in the early 2.4.x kernels. That's why I wrote
it was the "old" problem.


Henrik