On Sat, Jul 14, 2018 at 06:55:05PM +0300, Or Gerlitz wrote: > On Sat, Jul 14, 2018 at 8:58 AM, Leon Romanovsky <leonro@xxxxxxxxxxxx> wrote: > > On Fri, Jul 13, 2018 at 12:27:26PM -0400, Olga Kornievskaia wrote: > >> 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? > > > > It is unrelated to libibverbs and related to Saeed's netdev part. > > > yeah, if this has to do with the upstream mlx5 Ethernet driver, Olga, > please report > to netdev, where more people can look and respond Or, Saeed is already forwarded this question to relevant NIC and performance Mellanox representatives. Please take it with him. Thanks -- 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
