Hi Amir yes, that’s the way it should work, if this is not the case, some debugging is needed to identify the problem
Alfredo > On 26 Oct 2017, at 10:14, Amir Kaduri <akadur...@gmail.com> wrote: > > Basically, the functionality that I would like to have is even if less than > poll-watermark-threshold (default: 128) packets arrives the socket, they will > be forwarded to userland if 1 millisecond has passed. > How can I gain this? Isn't it by using pfring_set_poll_duration()? > > Alfredo, could you please clarify? > > Thanks, > Amir > > On Wed, Oct 18, 2017 at 8:48 PM, Amir Kaduri <akadur...@gmail.com > <mailto:akadur...@gmail.com>> wrote: > Hi, > > I'm using pf_ring 6.6.0 (no ZC) on CentOS 7, on 10G interfaces (ixgbe > drivers). > As far as I understand the relation between poll-watermark and poll-duration, > packets will be queued untill one of comes first: or passing the > poll-watermark packets threshold, or a poll-duration milliseconds has passed. > I set poll-watermark to the maximum (4096) (using > pfring_set_poll_watermark()) and set poll-duration to the minimum (1) (using > pfring_set_poll_duration()). > I've sent 400 packets to the socket. I see that they are received by the NIC, > but they didn't pass to userland. Only when passing 500 packets, a chunk of > them passed to userland. > I don't quite understand the behavior: since poll-duration is 1 (millisecond > I assume), I've expected all the packets to pass to userland immediately, > even though poll-watermark is much higher. > > Can anyone shed some light on the above? > > Thanks, > Amir > > _______________________________________________ > Ntop-misc mailing list > Ntop-misc@listgateway.unipi.it > http://listgateway.unipi.it/mailman/listinfo/ntop-misc
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