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. 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
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