README for jiffies-2.5.6x.patch

WARNING: Although I have not ever damaged anything by fiddling
with the jiffies var I won't say for sure that it won't cause
you harm. Use at your own risk.

This script requires Void Main's jiffies patch and requires a
later 2.5.x development kernel.  I was using 2.5.61 and 2.5.62
when I wrote this.  For 2.4.x the maximum uptime is 497 days
and I use a different script for the 2.4 kernel.

    NOTE: To patch the kernel:
    # cd /usr/src/linux-2.5
    # patch -p1 < /path/to/jiffies.patch

    Now compile/install. To use:

    # echo "10000 10" > /proc/sys/kernel/jiffies_64

The above command will bring your uptime up to about 497 days
and 2 hours. Just over the 497 day odometer rollover on the old
2.4 kernels.

In the above command the second number (10) is the significant
number. This is the only one you really should change. The first
number (10000) is milliseconds so it won't do much good to mess
with it. Drop the "10" down to "5" and you will be looking at
around 249 days of uptime, etc.

This command may hang your system. I can guarantee that it will
hang for at least a short period of time (a minute or two). I
have found that on one of my Red Hat 8.0 machines I can actually
add the above command to the /etc/rc.d/rc.sysinit file just after
where the /proc file system gets mounted. 

When I boot it will hang for a minute or so and then continue on.
I would rather do it there before everything else starts up. If
this command hangs your system and your system will not boot
(more than 5 minutes) then reboot into your old kernel (it is
important to keep your old kernel) and change the rc.sysinit back
to it's original state. I have to use a different method on one
of my other machines. 

I suggest you use this to test how uptime effects other
applications rather than playing with Netcraft like I do. Besides
it doesn't seem to have the desired effect with nmap (and I
suspect Netcraft).  It seems that externally we still have a
problem with the 497 day limit. Your "uptime" command will show
498 days but nmap will show 1 day. :( I'm researching this right
now....