From: Dennis Jacobfeuerborn <dennisml@conversis.de>
To: netfilter@vger.kernel.org
Subject: conntrack table limits
Date: Tue, 25 Jan 2011 12:45:52 +0100 [thread overview]
Message-ID: <4D3EB7F0.5020702@conversis.de> (raw)
Hi,
I'm trying to find out how high I can set conntrack_max on a 2GB 64 bit
system. On the net I found different ways of calculating this but they seem
to end up with different results. One forumla tells me that I can fit a
maximum of 65535 connections into 2GB of RAM but the other says that with
304 bytes per connection (plus a bit of slab allocation overhead) I can
easily fit more than a million connections into the table.
Also even with the current limit 65535 and the table having ca. 30.000
entries I've almost 1.8GB ram free/cached which leads me to believe the
second way of calculating this is more accurate.
What is the proper way to calculate this?
Regards,
Dennis
next reply other threads:[~2011-01-25 11:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-25 11:45 Dennis Jacobfeuerborn [this message]
2011-01-25 13:49 ` conntrack table limits Remzi AKYÜZ
2011-01-26 2:06 ` Dennis Jacobfeuerborn
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