A newbie question about InfiniBand: while running an RDMA bandwidth test I noticed that the RDMA communication occupied 99% CPU time, which is much more than I expected for InfiniBand. Is this normal or should I check my setup ?
How the test was run: (host 1) ib_rdma_bw -s 104857600 (host 2) time ib_rdma_bw -s 104857600 192.168.64.7 Transfer speed: 934 MB/s. Elapsed time: 107.613s real, 107.150s user, 0.418s system. Hardware: eight Intel Xeon CPU's (1.6GHz); 16 GB RAM; Mellanox MT25204 HCA (MemFree). Software: 2.6.22.12 Linux kernel in 32-bit mode + OFED-1.2.5.4 userspace tools. Regards, Bart Van Assche. _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
