[K12OSN] Something slowing me down...how can I measure?

[Christopher K. Johnson]

David Trask wrote:

>I believe I'm using the 2.6 kernel.  Any suggestions on what to look for to tweak my speed a little more?
>
Here is a line to add to /etc/modprobe.conf which is known to help 
mozilla/firefox performance on 2.6 kernel:
alias net-pf-10 off
It turns off ipv6, but unlike most Linux configuration changes YOU HAVE 
TO REBOOT for it to take effect.

Here are some lines I add to /etc/sysctl.conf that can affect some 
network applications, and one just for security...
# Disable TCP ECN which some routers and servers cannot handle.
net.ipv4.tcp_ecn = 0
 
# Disable TCP window scaling which some routers and firewalls cannot handle.
net.ipv4.tcp_window_scaling = 0
 
# Disable response to broadcast icmp echo requests.
net.ipv4.icmp_echo_ignore_broadcasts = 1

The reboot for the modprobe.conf change will pick up these changes too, 
or you can activate them immediately:
sysctl -p

Let me know if those help.
Chris

-- 
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   "Spend less!  Do more!  Go Open Source..." -- Dirigo.net
   Chris Johnson, RHCE #807000448202021