Re: Snort CPU usage

[Mike Miller <mike () millertwinracing com>]

I believe they solved the problem by dodging it. Rather than multi-threading snort, they use PF_RING to get access 
closer to the hardware, and does so in a way that multiple threads running the same config will get access to separate 
packets (I'm still coming up to speed on it).

There are also PF_RING aware NICS that greatly improve processing....and I believe Suricata is multi-threaded, but I 
haven't used it yet, myself. 






On Feb 18, 2013, at 3:39 PM, Josh Bitto <jbitto () onlineschool ca> wrote:

> I’m bumping this back up…..I’m curious to hear. Is snort still only single threaded on a CPU or have newer versions 
> allowed it to run on more than one core?
>  
> I’m wanting to make sure I have enough machine to run my WAN and about 4 VLANs
>  
> Each would have an interface to monitor, but where I’m stuck is the rule sets…
>  
> I read online where a great determining calculation is this…
> 1 CPU = (1000 signatures ) * (500 megabits network traffic)
>  
> So my question would be….if each interface has its own rule set aside from the main download of rules. Does that 
> factor in?
>  
>  
>  
> From: Josh Bitto [mailto:jbitto () onlineschool ca] 
> Sent: Monday, February 18, 2013 8:29 AM
> To: snort-users () lists sourceforge net
> Subject: [Snort-users] Snort CPU usage
>  
> Does anyone have a url or program where I can calculate hardware requirements for running snort on my network?
>  
>  
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