On Tue, 2017-04-18 at 19:33 +0200, Roman Penyaev wrote: > By current email I would like to share some fresh RDMA performance > results of IBNBD, SCST and NVMEof, based on 4.10 kernel and variety > of configurations. Hello Roman, Thank you for having shared these results. But please do not expect me to have another look at IBNBD before the design bugs in the driver and also in the protocol get fixed. The presentation during Vault 2017 made it clear that the driver does not scale if more than two CPUs submit I/O simultaneously at the initiator side. The comments Sagi posted should be addressed but I haven't seen any progress from the IBNBD authors with regard to these comments ... See also: * Danil Kipnis, Infiniband Network Block Device (IBNBD), Vault 2017 (https://vault2017.sched.com/event/9Xjw/infiniband-network-block-device-ibnbd-danil-kipnis-profitbricks-gmbh). * Sagi Grimberg, Re: [RFC PATCH 00/28] INFINIBAND NETWORK BLOCK DEVICE (IBNBD), March 27th, 2017 (https://www.spinics.net/lists/linux-rdma/msg47879.html). Best regards, Bart.
