[dpdk-dev] How to fight forwarding performance regression on large mempool sizes.

On 09/20/2013 07:34 PM, Robert Sanford wrote: > One more point, if you're not doing this already: Allocate 2^N-1 > mbufs, not 2^N. According to the code and comments: "The optimum size > (in terms of memory usage) for a mempool is when n is a power of two > minus one: n = (2^q - 1)." > Many than

[dpdk-dev] 82599 feature request: loopback and TSO

Hi, Is there any plan for adding support for 82599 features such as: 1. Loopback operation for diagnostic purpose The Tx->Rx loopback operation is handy when debugging with a standalone 10G port. 2. TCP/UDP segmentation in Tx (TSE bit in DCMD) TSO implementation is already in kernel. Is it in

[dpdk-dev] Question regarding throughput number with DPDK l2fwd with Wind River System's pktgen

Hi Chis, Here is the email I replied to via pktgen at gmail.com to Jun Han, which happens to match Venky's statements as well :-) Let me know if you see anything else that maybe wrong with Pktgen, but the numbers are correct :-) -

[dpdk-dev] Question regarding throughput number with DPDK l2fwd with Wind River System's pktgen

Chris, The numbers you are getting are correct. :) Practically speaking, most motherboards pin out between 4 and 5 x8 slots to every CPU socket. At PCI-E Gen 2 speeds (5 GT/s), each slot is capable of carrying 20 Gb/s of traffic (limited to ~16 Gb/s of 64B packets). I would have expected the

[dpdk-dev] DPDK QoS performance issue in DPDK 1.4.1.

In my experiment, all the packes are the same, which is quit different from realistic traffic management scenario. Thank you for your replay that Ienlightened me. At 2013-09-21 19:58:18,"Dumitrescu, Cristian" wrote: >Hi Jim, > >When we designed the Intel DPDK QoS hierarchical schedul

[dpdk-dev] Question regarding throughput number with DPDK l2fwd with Wind River System's pktgen

Hi, We have a question about the performance numbers we are getting measured through the pktgen application provided by Wind River Systems. The current setup is the following: We have two machines, each equipped with 6 dual-port 10 GbE NICs (with a total of 12 ports). Machine 0 runs DPDK L2FWD co