Snort mailing list archives
Second Snort instance killing performance
From: "Paul Melson" <pmelson () gmail com>
Date: Wed, 7 Sep 2005 10:49:40 -0400
I've just run into an interesting situation with one of my Snort sensors. I've added another interface attached to a new span port to my existing sensor box and I want to run a second Snort process for that interface. Same binary, same logs, but different config file and rule set for each process. If either the original process monitoring eth1 or the new process monitoring eth2 are running, the load average is about 0.3-0.4. If both processes run simultaneously, load jumps to 2.0+ and performance suffers, packets drop, etc. The server is a Proliant G4 running RHEL4 with dual Xeon 3GHz CPUs, 2GB RAM, Ultra320 disks, etc. so it shouldn't be choking on this relatively small amount of traffic. Snort version is Version 2.3.2 (Build 12). Anybody run into anything like this before? The problem seems to be specific to running two Snort processes, but I'm not sure where to troubleshoot next. PaulM ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Second Snort instance killing performance Paul Melson (Sep 07)
- Re: Second Snort instance killing performance Alex Butcher, ISC/ISYS (Sep 08)
- Re: Second Snort instance killing performance Jason Haar (Sep 08)
- Re: Second Snort instance killing performance Alex Butcher, ISC/ISYS (Sep 09)
- RE: Second Snort instance killing performance Paul Melson (Sep 08)
- RE: Second Snort instance killing performance Alex Butcher, ISC/ISYS (Sep 09)
- Re: Second Snort instance killing performance Jason Haar (Sep 08)
- Re: Second Snort instance killing performance Szymon Miotk (Sep 08)
- RE: Second Snort instance killing performance Paul Melson (Sep 08)
- Re: Second Snort instance killing performance snort sara (Sep 12)
- Re: Second Snort instance killing performance Murali Raju (Sep 12)
- RE: Second Snort instance killing performance Paul Melson (Sep 12)
(Thread continues...)
- Re: Second Snort instance killing performance Alex Butcher, ISC/ISYS (Sep 08)