Bind upgrade 9.3.4-P1 to 9.3.5-P1 - Higher CPU

[Mike Diggins]

This morning I upgraded one of my two Name servers, a Sun V210, running 
Solaris 10. Prior to the upgrade, my named deamon typical ran around 5-10% 
utilization. Since the upgrade it seems to be hovering in the 15-23% 
range, which seems a bit high. There was mention this patch would have a 
performance impact, but I wasn't expecting quite this much. Is this 
expected?

Some stats from the upgraded server.

# rndc status
number of zones: 69
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is ON
recursive clients: 81/2000
tcp clients: 0/100
server is up and running

# rndc status
number of zones: 69
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is ON
recursive clients: 126/2000
tcp clients: 0/100
server is up and running

# rndc status
number of zones: 69
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is ON
recursive clients: 99/2000
tcp clients: 0/100
server is up and running

-Mike