Hello, I was trying to find out fastest IPC where data source and sink run on the same host on SLES 10, running ConnectX and OFED 1.3.0. It seems RDMA is performing much better than shared memory.
Mode Latency (microsecs) Throughput ------- ----------------------------- ---------------- SHM 20 (32 bytes) 17 Mbps RDMA 1.07 (32 bytes) 1.2 Gbps SHM 70 (32k) 5.2 Gbps RDMA 30 (32k) 8.5 Gbps Can someone explain why RDMA's giving better performance on the same host? Is it only kernel bypass and zcopy? Thanks Rajib ============================================================================== Please access the attached hyperlink for an important electronic communications disclaimer: http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html ==============================================================================
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