Hi Christian, I am CC'ing csit-dev but here are some elements.
AFAIK, CSIT results are not trustworthy for Mellanox NIC yet unfortunately: T-Rex suffers from "stretch duration" when using Mellanox NIC to inject traffic. Here is my understanding of what this means: when asked to send at X packets in Y seconds (hence at a rate of X/Y pps), T-Rex effectively takes Y + Z seconds. CSIT figures are based on the programmed rate (X/Y) and not the real rate (X/(Y+Z)). In a nutshell: we are not really sure where we're at with Mellanox card in CSIT. Your figures look similar to what I get on my setup (~20Mpps bi-directional for IPv4 forwarding). Best ben > -----Original Message----- > From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Christian > Hopps > Sent: lundi 17 août 2020 15:00 > To: vpp-dev <vpp-dev@lists.fd.io> > Cc: Christian Hopps <cho...@chopps.org> > Subject: [vpp-dev] Question on performance tests.. > > [sent to csit-dev but perhaps since I'm not subscribed it didn't post] > > I'm looking at this performance graph: > > https://docs.fd.io/csit/master/trending/trending/ip4-2n-clx-cx556a.html > > Is this a uni-directional or a bi-directional test? > > There is a huge performance gain between June and July it seems. Do we > know which change this was? I'm on a current vpp master and I am only > getting about 9Mpps+ bidirectional (18Mpps total) with IPv4 forwarding of > 64 octet packets with 100GE Cx5 cards and Trex. > > Thanks, > Chris.
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