Bad performance

Hello list,

I'm running a Tux 2.0 server, under a high load. The server is a dual Athlon
1400MP w/ 1G ram and serving the files from NFS. The loadaverages are around
4.

When I benchmark this server it is able to almost 3.24 [requests/sec].
On the server Tux is eating up almost all the CPU:
USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
#-1        754 93.3  0.0  1612  700 ?        R    Oct04 1308:59 [TUX worker
0]

My startup script configures tux:

    echo "Starting tux:"
    ## tux configuratie:
    echo "1" > /proc/sys/net/tux/threads
    echo "0" > /proc/sys/net/tux/compression
    echo "/mnt/web/tux" > /proc/sys/net/tux/documentroot
    echo "nobody" > /proc/sys/net/tux/cgi_uid
    echo "nobody" > /proc/sys/net/tux/cgi_gid
    echo "1" > /proc/sys/net/tux/virtual_server
    echo "10" > /proc/sys/net/tux/keepalive_timeout
    echo "0" > /proc/sys/net/tux/logging
    echo "1" > /proc/sys/net/tux/generate_cache_control
    echo "/www/logs/tux" > /proc/sys/net/tux/logfile
    echo "tweakers.net" > /proc/sys/net/tux/default_vhost
    echo "http://0.0.0.0:8080" > /proc/net/tux/0/listen/0
    echo "8080" > /proc/sys/net/tux/clientport
    echo "10" > /proc/sys/net/tux/keepalive_timeout
    echo "20000" > /proc/sys/net/tux/max_connect
    echo "10000" > /proc/sys/net/tux/max_keepalives

    ## tux starten:
    /usr/sbin/tux --daemon --threads 1 --docroot /www/tux

I can't figure out where the problem is, I hope someone can help me.

tia,
Kees Hoekzema