Re: [Ntop-misc] fanout limits

Thu, 12 Jan 2017 10:32:51 -0800

Hi Alfredo,

I'm using the ixgbe driver with about 2.5M pps.
 
What I'd like to do is clone the traffic so I can run multiple tcpdump instances, each with a different bpf, and store the output to a different pcap file, whose name is determined by the bpf in use.
 
Is there a limit on the amount of virtual interfaces I can create in this scenario ?
 
Thanks again !
 
Moshe
 

On Jan 12, 2017 16:50, Alfredo Cardigliano wrote:

Hi Moshe
it really depends on several factors, including but not limited to traffic rate (pps), bandwidth, hw specs,
I need to know more about your traffic, hw configuration and what are you trying to do in order to help you.

Best Regards
Alfredo

> On 12 Jan 2017, at 06:00, Moshe Danielli wrote:
>
> Hi Guys,
>
> What is the rule of thumb when determining the maximum amount of fan out interfaces (when using zfanout_ipc) ? Is it based on bandwidth, the hw specs or a combination of both ?
>
> Thanks in advance,
>
> Moshe
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