Re: route cache GC monitoring

Hello!

> We like to propose four new stats. counters to monitor the garbage process 
> of route cache. This should be useful for tuning and debugging installations 
> which have a large number of flows.

OK.

> Tuning is another business but we have played with max_size and gc_thresh
> there are more tuning knobs.

There exist one more interesting parameter: gc_elasticity,
which is supposed to control length of hash bucket.

Alexey