On Fri, Jul 13, 2018 at 12:02 PM, Christopher Lameter <cl@xxxxxxxxx> wrote: > On Wed, 11 Jul 2018, Olga Kornievskaia wrote: > >> Please excuse me if this is not the right place to post this (but >> according to the MAINTAINERS list for the ethernet Mellanox MLX5 >> driver this should be it). I'm having issues with the latest kernel >> (4.18-rc4) and using Mellanox CX-5 cards. I'm trying to send TCP >> traffic not RDMA traffic using iperf3. I've noticed issues with >> performance. > > Upgrade to the latest rdma core package? There is a bug in libibverbs that > limits throughput that was fixed recently and Mellanox has been pushing > out firmware releases that finally make the NIC obey rate limitations. > Together this can produce a weird set of constraints on performance. I have latest Mellanox firmware for the card but I'm not sending RDMA traffic. libibverbs shouldn't be in play here? -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
