Re: Multiple Snort instances processing Pcap files

[Livio Ricciulli <livio () metaflows com>]

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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