Snort mailing list archives

Re: Snort performance and maintenance


From: Joel Esler <joel.esler () sourcefire com>
Date: Tue, 1 Nov 2005 12:02:13 -0500

I suggest you move the input of alert data into the database to Barnyard. (If you are not already doing so)

I would also periodically clean out the DB (clean out old stuff, and stuff you don't need.)

Finally, switch to BASE instead of ACID.  http://base.secureideas.net

Joel



On Nov 1, 2005, at 11:17 AM, Hubert Edward kIYIMBA wrote:

My snort IDS has got 40GB Hard disk, 3GHz microprocessor speed and 1GB RAM. It is connected so as to capture traffic from the internet into the network. This machine has been running for three months now.

The machine has deteriorated in performance. It is so slow. The ACID takes so long to load. The current statistics from the machine is as follows

 using command # free -t -m the following is displayed

        Total   used    free    shared  buffers cashed
Mem     996     987     9       0       652     777
-/+bufferscasche                147     849                     
swap    2047    207     1840                    
Total   3044    1195    1849                    

using the top command I discovered that MS-SQL takes 40 to 50 % CPU usage full time.


I am seeking advice on how to improve the performance of the IDS


Thanks


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