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Re: Multiple Snort instances processing Pcap files
From: Livio Ricciulli <livio () metaflows com>
Date: Wed, 29 May 2013 15:15:44 -0700

Could it be you are running out of memory?

On 05/29/2013 02:01 PM, Parker, Jonathan E. wrote:
Hey, thanks for the reply.

- Snort 2.9.4.5
- No definitive number of processes where failing starts that I can determine. It seems to have more trouble the more instances I run. - My snort.conf file is fairly large and I don't have a quick way to get it to my "internets" workstation. But pcaps are processed just fine with my snort.conf if I process one file at a time. Could there be something that becomes an issue re: snort.conf if one runs multiple instances.

I saw another reply that maybe it is a threading issue - I didn't know Snort was single threaded - just started using it. Perhaps that is my issue.

Thanks - Jon
------------------------------------------------------------------------
*From:* Shawn Lee [dashawn () gmail com]
*Sent:* Wednesday, May 29, 2013 4:39 PM
*To:* Parker, Jonathan E.
*Cc:* snort-users () lists sourceforge net
*Subject:* Re: [Snort-users] Multiple Snort instances processing Pcap files

What version of snort? Is there a number or processes in parallel that it starts failing at? What is your snort config?


On Wed, May 29, 2013 at 10:53 AM, Parker, Jonathan E. <jep () g-c-i net <mailto:jep () g-c-i net>> wrote:

    I've developed a script (CentOS) to process .pcap files as they
    arrive in a directory.  It starts an instance of Snort to process
    the file (snort -y -r <pcap file> -c snort.conf -l <a unique
    directory for the given .pcap>).  I'm having occasional issues
    when multiple instances of Snort are running at the same time, the
    processing terminates for some files with the message "Error
    during Snort processing".  If I process the file w/o other
    instances of Snort running, it works fine.  It seems to get worse
    (more failures) the more instances of Snort I have running at once.

    Any ideas on what might be causing this issue?

    Thanks - Jon

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------------------------------------------------------------------------------
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Get 100% visibility into your production application - at no cost.
Code-level diagnostics for performance bottlenecks with<2% overhead
Download for free and get started troubleshooting in minutes.
http://p.sf.net/sfu/appdyn_d2d_ap1


_______________________________________________
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------------------------------------------------------------------------------
Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET
Get 100% visibility into your production application - at no cost.
Code-level diagnostics for performance bottlenecks with <2% overhead
Download for free and get started troubleshooting in minutes.
http://p.sf.net/sfu/appdyn_d2d_ap1
_______________________________________________
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:
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Please visit http://blog.snort.org to stay current on all the latest Snort news!

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