Hi Again Alfredo,

 
What about performance considerations ?
 
Is creating 32 interfaces creating substantial CPU / memory ohverhead, as opposed to creating only several virtual fanout interfaces ? I'm refering to the creation of the interfaces only... not consuming the traffic by other processes.
 
Thanks again,
 
Moshe
 

On Jan 12, 2017 20:50, Alfredo Cardigliano wrote:
Hi Moshe
there is a limit of 32 virtual interfaces when you use the fanout, because 
of the API which is using a 32-bit mask to select the egress queues.

Alfredo

On 12 Jan 2017, at 10:32, Moshe Danielli <[email protected]> wrote:

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
> _______________________________________________
> Ntop-misc mailing list
> Ntop-[email protected]
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc

_______________________________________________
Ntop-misc mailing list
Ntop-[email protected]
http://listgateway.unipi.it/mailman/listinfo/ntop-misc



_______________________________________________
Ntop-misc mailing list
[email protected]
http://listgateway.unipi.it/mailman/listinfo/ntop-misc


_______________________________________________
Ntop-misc mailing list
Ntop-[email protected]
http://listgateway.unipi.it/mailman/listinfo/ntop-misc



_______________________________________________
Ntop-misc mailing list
[email protected]
http://listgateway.unipi.it/mailman/listinfo/ntop-misc

Reply via email to