[CentOS] Performance of CentOS as a NAT gateway

Bart Schaefer napsal(a):
> We're having a spike right now.  Doesn't look much different, though:
> 
> # wc -l /proc/net/ip_conntrack
>   17141 /proc/net/ip_conntrack
> # fgrep -cv UNRE /proc/net/ip_conntrack
> 1310

What are the upstream link parameters (type, up, down, ...), what's the
ping on gateway and 1K ping.
David