Re: large proxies

On Mon, 21 Feb 2000, Cor Bosman wrote:

> Is anyone here running a large cache on squid? Say 100GB in disk
> capacity. If so, what kind of system is it? It seems you need like 2gb
> memory for such large caches. Is there any research available as to if
> a 100gb cache is even worth it? Should we remain with something
> smaller like 25gb (currectly). We serve several tens of thousands of
> users.

Common wisdom suggests looking at how much traffic you server rather than
the number of users. Say you had a 1 Mb/s link and you kept it running at
an average 80% utilisation - 100 Gb of cache would give you an LRU age of
around 14 days, whereas 25 Gb would equate to something closer to 3-4 days
(note: very rough figures, possibly wildly inaccurate - do the maths
yourself :). This might well be worth the capital cost of the large hard
drives, but each situation is different, and you need to to figure out
your best option based on your own environment.

--
 Kendall Lister, Systems Operator for Charon I.S. - kendall@charon.net.au
  Charon Information Services - Friendly, Cheap Melbourne ISP: 9589 7781