Snort mailing list archives

Re: Performance.


From: Vjay LaRosa <vjayl () emc com>
Date: Wed, 20 Mar 2002 12:45:03 -0500

Sorry,

The 4'th instance is just for testing currently. I am considering replacing the
Solaris host as the snort system with
two linux systems. (I would then use the Solaris box as the Mysql host/Demarc
console)

vjl





Phil Wood wrote:

On Wed, Mar 20, 2002 at 12:09:04PM -0500, Vjay LaRosa wrote:
O.Kay,

I know that everyone probably hates this question, but I need to ask it
any way. I am running four instances
of snort. The first three run on a Fujitsu Prime Power M400, the fourth
runs on a linux PC.
  2 On my Solaris host I have two 100MB cards that run close to 75% utilization
  each.
  Snort barely even drops a single packet ever from either of these cards.
  1 My third instance is reading off a Sun Gigabit
card. This interface only peaks periodically at 2% utilization, but I
drop hundreds of thousands of packets. I am using libpcap version 7.1,
snort 1.8.4 beta 4. The snort
Look at the interface stats.  On linux you can cat /proc/net/dev and see
if the card has any information.  I don't know what solaris provides.
process that is dropping all of the packets is only running at about 9%
CPU utilization. I have tried reducing signatures,
and removing output plugins, but nothing helps . Does anyone have any
suggestions for me to try? Thanks!

I only see 3 instances discussed.  what about the fourth.  What kind of
linux PC do you have?


vjl



--
 V.Jay LaRosa                           EMC Corporation
 Systems Administrator                  171 South Street
 (508)435-1000 ext 14957                Hopkinton, MA 01748
 (508)497-8082 fax                      www.emc.com




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--
Phil Wood, cpw () lanl gov

--
 V.Jay LaRosa                           EMC Corporation
 Systems Administrator                  171 South Street
 (508)435-1000 ext 14957                Hopkinton, MA 01748
 (508)497-8082 fax                      www.emc.com




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