Are you saying worst case is 80%? Its not normal to have all minimum size packets unless you are under ddos. Default ethernet is 1526 (1530 with vlan) with a MTU 1500 on a layer 1 frame. A layer 2 frame is 1518 (1522 with vlan). If you want to include all layer headers then 1542 including vlan is the correct number and that will allow a 1500 octet payload.
On Thu, Jan 26, 2017, 18:20 Jim Thompson <[email protected]> wrote: > > > > On Jan 26, 2017, at 5:06 PM, [email protected] wrote: > > > > Am 2017-01-26 07:03, schrieb Jim Thompson: > >> It does not. > >> The c2758 SoC is interesting. 8 cores, and the on-die i354 is > essentially a > >> block with 4 i350s on it. > >> These have 8 queues for each of rx and tx, so 16 each, for a total of 64 > >> queues. > >> On the c2xxx series (and other) boxes we ship, we increase certain > >> tunables, because we know what we're installing onto, and can adjust > that > >> factory load. pfSense CE does not have that luxury, it has to run on > nearly > >> anything the community finds to run it on. Some of these systems have > ... > >> constrained RAM. While we test each release on every model we ship, > such > >> testing takes place only for a handful of other configurations. > >> There is a decent explanation of some of the tunables here: > >> https://wiki.freebsd.org/NetworkPerformanceTuning > >> Incidentally, FreeBSD, and thus pfSense can't take much advantage of > those > >> multqueue NICs, because the forwarding path doesn't have the architure > to > >> advantage them. Our DPDK-based system can forward l3 frames at over > 12Mpps > >> on this hardware (about 80% of line-rate on a 10g interface). > >> Neither pfSense or FreeBSD (nor Linux) will do 1/10th of this rate. > > > > > > > > > > Hi, is this DPDK-based system commercially available? > > > > > > > > Rainer > > Still being developed. > > Jim > _______________________________________________ > pfSense mailing list > https://lists.pfsense.org/mailman/listinfo/list > Support the project with Gold! https://pfsense.org/gold > _______________________________________________ pfSense mailing list https://lists.pfsense.org/mailman/listinfo/list Support the project with Gold! https://pfsense.org/gold
