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Memory usage for ip_conntrack

To: netdev@xxxxxxxxxxx
Subject: Memory usage for ip_conntrack
From: Dax Kelson <dax@xxxxxxxxxxxx>
Date: 18 Jul 2003 14:07:29 -0600
Sender: netdev-bounce@xxxxxxxxxxx
I'm teaching a Linux class and the book says "Using ip_conntrack will
use much more memory".

A student asked me how much is "much".

So on a 2.4.20+  how much memory does it take to track the state of a
connection?

If I echo 102400 > /proc/sys/net/ipv4/ip_conntrack_max, what is my worst
case memory usage?

TIA,

Dax Kelson


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