This apprently controls the maximum size of the IP route cache, and
it's currently set to 256. If I changed it to 2048 (say) would
anything bad happen? :)
It looks pretty safe as far as I can see, no byte size counters or
anything, but I'd like a 2nd opinion.
Reason: I've a machine (PPro 200) that's spending 12% of kernel CPU
time garbage collecting the rt_cache. The machine is handling a LOT of IP
traffic to diverse destinations ( more than 1000 TCP flows is normal),
and it looks like the route cache is thrashing badly.
Michael.