The Mythical 30% Hit Rate

Hi all,

I'm curious about the oft-quoted 30% optimal hit rate "by experience".
Is this on requests or on bytes? I got a server that's doing 30% on requests,
and 15% on bytes, on 9 GB of cache_dir.

I'm wondering if adding 9 GB more disk will increase the byte hit rate.
One reason it might not, is because this cache handles requests of
downstream caches and not end-user requests.

Thanks,
---m

-- 
Miguel "Migs" A.L. Paraz	             IPhil Communications Network, Inc.
http://www.iphil.net                       Business Development/Training Group
5/F 116 Herrera St., Legaspi Village, Makati City, Philippines  +63-2-750-2288