[Snort-users] Snort + PF_RING + DAQ

Luca Deri deri at ...8215...
Tue Sep 4 19:12:25 EDT 2012

Hi Livio,
if you have a look at http://www.ntop.org/wp-content/uploads/2012/09/Snort_over_DNA_Silicom_30_07_2012_1.pdf you will see that the speed bump of DNA with respect to non-DNA PF_RING DAQ ranges from +20% to over +1400%. So I won't say "slightly better performance".

Regards Luca

On Sep 5, 2012, at 12:54 AM, livio Ricciulli <livio at ...15149...> wrote:

>> CPU Binding is something important, QUEUE wise if you bind a snort
>> process to the same network QUEUE
>> then you can clearly start to benchmark. If you spread the network
>> queue load on multiple CPU and do not bind process
>> to the same CPU then your adding context switching in the mix which i
>> think is bad at high throuput.
> In pfring lingo this is called DNA and does give slightly better performance
> which supports your claim:
> see https://www.metaflows.com/technology/10-gbps-pf_ring-2/
> We found, though, that with NAPI and letting the Linux scheduler loose 
> on 24 threads
> works just as well but gives you much better flexibility (you can have 
> multiple
> applications share the same interface for example which you cannot do 
> with DNA).
> So, your theory is correct but it does not make a big enough difference, 
> (on our appliances).
> And I doubt it would solve Peter's problem. But again, it is hard to 
> generalize and I might be wrong..
> Livio.
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and 
> threat landscape has changed and how IT managers can respond. Discussions 
> will include endpoint security, mobile security and the latest in malware 
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Snort-users mailing list
> Snort-users at 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
> Please visit http://blog.snort.org to stay current on all the latest Snort news!

More information about the Snort-users mailing list