[squid-users] Re: is there a squid "cache rank" value available for statistics?

On Mon, 20 Apr 2009 14:35:49 +0100
RW <rwmaillists_at_googlemail.com> wrote:

> On Sun, 19 Apr 2009 19:03:36 +0100
> Gavin McCullagh <gavin.mccullagh_at_gcd.ie> wrote:
>
>
> > With a heap, things are more complex. I guess you could give an
> > indication of the depth in the heap but there would be so many
> > objects on the lowest levels, I don't suppose this would be a great
> > guide. Is there some better value available, such as the key used
> > in the heap maybe?
>
> You could probably do this with a modified version of heap LRU, using
> a counter rather than a timestamp as a key. You could then work-out
> the relative position in the queue, from the key value, the current
> counter value, and the key value at the top of the heap.

I should add that since heap key values don't persist over a restart,
the heap would not initially be in LRU order, so you would have to wait
for the normal LRU reference age before any statistics are meaningful
-or start with an empty cache.
Received on Mon Apr 20 2009 - 14:54:06 MDT