high performance caching bind server
What do people use/recommend for high performance name serving?
I currently have a few servers running bind9 (9.2.4-1sarge2) serving
an average 750 requests per second running on Debian/sarge. kernel-2.4.32
(the stats say: low: 0.00, peak: 2500, avg: 750)
We are experiencing some ... oddities, where after a few days, the
receive buffer (8M) fills up and doesn't empty - leaving new requests
A restart of the named processes fixes this, however, it's a caching
only server, and flushing the cache every couple of days defeats its
reason for existance :P
It's either a bind problem, a kernel issue, or something in between.
We're either going to replace these, or if there is something we can do
to poke it and make them happier, we'll do that.