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> 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 >
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