Re: Proof (in my mind) that 2.6 is ready for production use.

Proof in my mind that 2.4 still works fine:

I stopped in one of my schools and did my usual quick checks on the
server. I noticed the uptime was only 8 days. I asked if they had had
any long power outages. They weren't aware of any. (I didn't remember
getting any automated emails from their server, either.) I checked the
logs for a reboot last Tuesday. (8 days of uptime) I couldn't find any
evidence of a reboot. Then, I remembered something about wrapping the 2.4
kernel at 497 days. The 32 bit jiffy counter (100 jiffies / second) wraps
at 497 days, and the 64 bit counter wasn't around until 2.5.something.
One of the evidences of wrapping the counter is if you 'ps aux' you will
find processes that started in the future. So:

des:~# uname -a
Linux des.dsd.ca 2.4.26 #4 Fri Aug 13 14:42:21 CST 2004 i686 unknown
des:~# uptime
 11:22:26 up 8 days, 7:02, 3 users, load average: 0.11, 1.55, 4.07
des:~# ps uxa|grep rpc
root 8316 0.0 0.0 1444 504 ? S 2007 0:00
/sbin/rpc.statd
des:~#
(There's more processes that started next year... more than a dozen, anyway.)

So, I guess I have 505 days of uptime on that box.

ttyl
srw
Received on Wed May 3 11:30:32 2006