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Uh! This looks like an incredible result. I believe that your benchs are worth publishing, in a revised xrootd website or elsewhere. What was there at the client side for this tests? Do you plan to win again the bandwidth challenge? If so, maybe we can do even better. Fabrizio Bill Weeks wrote: > Hi, > I have been doing a lot of benchmarking of xrootd using memory mapped > files, e.g. no disk I/O. Mostly I have focused on latency as opposed to > bandwidth, but I can show you a bandwidth result using multiple clients. > All the machines in this test are using GigE. The test uses a single > xrootd server and up to 40 clients. > > Basically, the bandwidth depends on the client blocksize with the > network being the bottleneck with as few as 5 clients at the larger > blocksizes. At the smaller blocksizes, the xrootd server bottlenecks > on the CPU. Since the test is not doing any disk I/O, it shows the > peak capability of the xrootd server. > > I've attached two plots, one showing the aggregate bandwidth, and the > other the average client bandwidth. > --Bill Weeks