search for: 40gbit

...based on dd with bs=128K with 100GB data file generated from /dev/urandom. 1. volume transport set to RDMA is very very unstable. disconnecting all the time even with minimal load. I've found that when it does work the speeds are very fast - was getting around 1.4 - 1.6GB/s with 16 threads on 40gbit/s QDR link. 2. volume transport set to tcp works over IPoIB interface, but i've not managed to get a good level of performance with real data. I was maxing about 220MB/s with a single thread and around 550MB/s with 12 or more threads. Benchmarking with a huge file made from /dev/zero gives m...